Peterbilt 379 speed sensor location

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Peterbilt 379 speed sensor location. How to replace and install a speed sensor on Cummins ISX15#speedsensor #cummins isx15Playlist Recommendation: Truck Maintenance - Drive Line https://bit.ly/...

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Ownership, maintenance and mechanical issues forum for all Peterbilt models, including 210, 220, 320, 325, 330, 337, 348, 365, 367, 386 Hybrid, 386, 387, 388, 389, 379Wheel end or ABS speed sensors are self -adjusting and pushing them in to contact the tone ring is correct. The endplay in the wheel bearing sets the gap. Output speed, vehicle speed sensors and trans speed sensors on late model trucks are preset to a certain gap and most are non-adjustable. At least on Eaton and Allison transmissions they are ...It typically states front or steer axle for the front end. Then for the rears depending on abs set up it refers to your rear drive axle and the other drive axle as the AA axle or additional axle. I recommend checking the left front drive of your truck and verify if your sensor on that wheel is your problem. Aaron Evans.Peterbilt 579 Speed & Tachometer Sensors | Raney's Truck Parts. Buying Guides. Specials. Why Shop. at Raney's? 888-888-7990. Freightliner. Kenworth. Peterbilt.The 577.75500 Vehicle Speed Sensor | Paccar is engineered to work with specific vehicles displayed below. ... Peterbilt: 379: 2007: Peterbilt: 379: 1999: Peterbilt: 379: 2000: Peterbilt: 379: 2001: Peterbilt: 379: 2002: ... medium, and heavy duty truck and trailer parts. Located in Saginaw, Michigan, and established in 1976, we've been selling ...

Wheel Speed Sensors and PMVs. ABS plus ATC [Traction Control] (EC‑80 ATC) Three SD‑13‑4983 (This Document) ESP® "Advanced" All items above, plus: Yaw Rate Sensor; Steering Angle Sensor; ABS Air Bag Pressure Sensor; Steer‑Axle ATC Valve; ABS Pressure Sensor; and an Additional PMV. ABS plus ATC plus ESP [Yaw Control (YC) andCompare 2005 Peterbilt 379 Speed Sensor brands. Check prices & reviews on aftermarket & stock parts for your 2005 379 Speed Sensor. Order your parts online or pick them up in-store at your local Advance Auto Parts.Save more on an aftermarket Peterbilt Speed Sensor with CarParts.com's Lifetime Replacement Guarantee. Free 60-Day Returns. Order now! ... Location : Input Replaces OE Number : 2016616, ... Peterbilt 379 Speed Sensor. Peterbilt 382 Speed Sensor. Peterbilt 384 Speed Sensor.43,000 1999 Peterbilt 379exhd. 1999exhd blue flattop american class hardwood floor 8" stacks good tires and brakes for more details call 712-830-5099 $46,500. Similar trucks: Peterbilt 379exhd In Farnhamville, IA. US, Iowa, Calhoun County, Farnhamville at truckpaper.com.We are available for live support Monday to Friday: 8 am - 5 pm CST. [email protected]. 888-894-3114. Support Center. Shop hundreds of Peterbilt Heating & A/C Parts & Components parts from Peterbilt Parts. The most trusted online retailer for trucking equipment and accessories.Pete 379 c15. I put a new clutch sensor and new solenoids but engine brake is still not working. Engine brake button is working. ... Not sure on a 379. On my Mack it's located in the fuse panel inside the cab where the flasher and wiper relays are. ... 2001 peterbilt 379 Detroit 12.7... Tylers1220 posted Apr 29, 2024 at 2:01 PM.of Contents. Located at the front of the manual, this table lists the main subjects covered and gives section numbers where you can find these subjects. Use the Quick Table of Contents to find information on a large subject and then use the detailed table of contents found on the first page of each chapter. Cross-referenced citations

Backslap. 929 posts · Joined 2011. #2 · Oct 25, 2013. I like the placement on both sensors, (transmitters) to be as near the thermostat housing near the head as possible for the engine coolant, and near the rear of the head by an oil return galley for engine oil. Both temperatures are at their highest readings at these points as they have ...Nov 16, 2017 · Sensor location and identification on A Perterbilt 379, International TranStar, And a Military Freightliner M916A3. 2018 KW with Paccar M13, engine speed sensorClick on these links to access the wiring diagrams you will need. Troubleshooting 1. Troubleshooting 2 (See PDF pages 10 and 11) Let me know if you need more help. Ask Your Own Medium and Heavy Trucks Question. I wasn't able to find anything to help on the first diagram. The second one is for a C-15 or C-16, so if it is the same as a 3406e it ...If you’re experiencing issues with your car’s speedometer or noticing erratic behavior in your vehicle’s transmission, it could be due to a faulty speed sensor. Before we dive into...

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Compare 2007 Peterbilt 379 Speed Sensor brands. Check prices & reviews on aftermarket & stock parts for your 2007 379 Speed Sensor. Order your parts online or pick them up in-store at your local Advance Auto Parts.2005 250 Super Duty Crew. White and Grey. ARP studs, EGR Delete, and SCT from Vivian. CCV re-route, and 4" Magnaflow turbo back. Other trucks:1980 KW Ext hood, 1982 Kenworth Cabover Aerodyne (BJ and the Bear) 2000 and 2003 Kenworth W900's. 2003 Pete EXHD. All Caterpillar Power. My 2003 has an MBN I converted to 6NZ.Kenworth T800 Speed & Tachometer Sensors | Raney's Truck Parts. Buying Guides. Specials. Why Shop. at Raney's? 888-888-7990. Freightliner. Kenworth. Peterbilt.How to replace and install a speed sensor on Cummins ISX15#speedsensor #cummins isx15Playlist Recommendation: Truck Maintenance - Drive Line https://bit.ly/...GP406 Discussion starter. 5 posts · Joined 2014. #1 · Sep 19, 2014. Hello, i have a 1999 379 Peterbilt with a 60 series Detroit DDEC 4 and a 13 speed transmission. my problem is the speedometer, 0 to 30 mph the needle stay at zero, over 30 mph everything is perfect, when i slow down below 30 the needle drop to zero (sometime is 35-40 mph, it ...

Peterbilt 387 389 Speed Sensor Harness P92-6970 - Raney's Truck Parts. Buying Guides. Specials. Why Shop. at Raney's? 888-888-7990. Freightliner. Kenworth. Peterbilt.Thank you for the information. I believe the suspension load gauge is right on top of one of tye rear suspension air springs. I'll see if it's listed under your VIN. Actually it's going to be on the firewall plumbed into a line there. Should be just to the left of the fuse panel there and it should be labeled "suspension pressure."Kenworth Peterbilt Oil Temperature Sensor KENK152-247 - Raney's Truck Parts. Buying Guides. Specials. Why Shop. at Raney's? 888-888-7990. Freightliner.2006 Peterbilt 379 with an (what I believe) E series Wabco ABS controller (Peterbilt in their infinite wisdom put a piece of masking tape right over the identification label on the controller and after so many years it is impossible to remove and see the entire label). ... Two codes were shown, one active - left rear wheel sensor, one logged ...Meet the Experts. Check engine light is on and off. I check the flash code and it coming up "42" 05 peterbilt 379, C15 cat. I haven't done - Answered by a verified Technician.Peterbilt Motors Company reserves the right to make changes at any time without notice. Safety Alerts Please read and follow all of the safety alerts contained in this manual. They are there for your protection and information. These alerts can help you avoid injury to yourself, your passengers and help prevent costly damage to the vehicle ...Peterbilt Speed & Tachometer Sensors | Raney's Truck Parts. Buying Guides. Specials. Why Shop. at Raney's? 888-888-7990. Freightliner. Kenworth. Peterbilt.7. 6. 5. Buy now. Peterbilt Truck 389 Model Family Electrical Schematic Manual PDF. With Instant Download.

The Cummins ISX 565 in this 389 will give you the best of both worlds. It is aptly joined with the Eaton Fuller 18-speed. A big truck in heavy weight applications can save tires and other components from the torque of taking curves at slow speeds with those split gears at the bottom, available only in the 18-speed configuration.

Order Peterbilt 379 Vehicle/Transmission Speed Sensor online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store. ... Peterbilt 379 MAP Sensor; Peterbilt 379 EGR Valve; Peterbilt 379 Fuel Injection Pressure Sensor; Peterbilt 379 EGR Valve Gasket; Peterbilt 379 Accelerator Pedal ... Peterbilt. International. Mack. Volvo. Other Rides. All Products. Keep your Kenworth engine running smoothly with this tachometer and speed sensor from Raney's! Matches OEM: Q21-6005. Dorman Vehicle Speed Sensors 505-5201. ( 1 ) Part Number: RNB-505-5201. $26.99. Dorman Vehicle Speed Sensors. Vehicle Speed Sensor, Electrical, Freightliner, Each. See More Specifications | Check the Fit. Estimated Ship Date: Today Would you rather pick it up? Select Location.The turbine speed sensor is actually above the black plate. I ended up changing the wrong sensor in the video. I spoke to a tech that showed me the transmiss...Kenworth. Peterbilt. International. Mack. Volvo. Other Rides. All Products. Put the pedal back to the metal with this reliable aftermarket Freightliner throttle position sensor service kit from Raney's Truck Parts! Matches OEMs: 2587164C91, 131973, WIL131973.Peterbilt Number:16-05054, 1605054; Typically ships in 7 to 10 business days. Low air pressure switch 577.75615 for Peterbilt Model 378, 379, 385 trucks. 1/4 inch NPT threads, 2 screw terminals. Specifications; Product Details ... medium, and heavy duty truck and trailer parts. Located in Saginaw, Michigan, and established in 1976, we've been ...2005 250 Super Duty Crew. White and Grey. ARP studs, EGR Delete, and SCT from Vivian. CCV re-route, and 4" Magnaflow turbo back. Other trucks:1980 KW Ext hood, 1982 Kenworth Cabover Aerodyne (BJ and the Bear) 2000 and 2003 Kenworth W900's. 2003 Pete EXHD. All Caterpillar Power. My 2003 has an MBN I converted to 6NZ.The Peterbilt 379 is a model line of Class 8 trucks that was produced by the Peterbilt division of PACCAR from 1987 to 2007. Serving as the successor to the 359, the 379 was a conventional-cab truck configured primarily for highway use, serving as the flagship of the Peterbilt model line. During much of its production, the 379 was popular among ...Have a 2008 Peterbilt 389 with a ABS light on. The code is SID 4 FMI 2. I checked the sensor and the tone wheel was dirty, cleaned and tested by rotating the wheel and have .2 volts or more. Also checked it with the left side and have the same reading. Test drove light stays on and can not clear the code.A vehicle’s speed sensor is a monitoring device that measures the output of a transmission or transaxle in terms of wheel speed. This information is used by the engine control modu...

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The Cummins ISX15 turbo speed sensor is located on the high pressure pipe after the turbo, near the back of the engine on the exhaust side. When experiencing difficulty finding it, it is recommended to take the vehicle to a shop for assistance. Symptoms of a failing turbo speed sensor may include a lack of power, fault codes, and the engine ...S-23327 15-06080 Fender Liner/Shield Peterbilt 379 Series Sold Single Or In Packs Of 3 S-22166, S-22167 S-25593 L85-6036 Front Fender Support, LH Peterbilt 379 & 389 Series — — S-25594 L85-6036R Front Fender Support, RH Peterbilt 379 & 389 Series — — S-22166 15-04905M001L5 Fender, LH Peterbilt 379 Series Pre-Drilled S-23327, S-22167Kenworth T800 Speed & Tachometer Sensors | Raney's Truck Parts. Buying Guides. Specials. Why Shop. at Raney's? 888-888-7990. Freightliner. Kenworth. Peterbilt.Attach the other end of the same cable to the positive (+) terminal of the charged (booster) battery. 10. Attach the remaining jumper cable FIRST to the negative (-) terminal (black …Peterbilt. International. Mack. Volvo. Other Rides. All Products. Keep your International 1000, 4000, 5000, 7000, 8000, or 9000 engine running like new with this aftermarket speed sensor from Raney's Truck Parts! Replaces OEM#: 3528003C1.www.peterbilt.com With Eaton transmission. With external tone ring. PRICE: 42.99. Connector Gender: Blade. Connector Color: Black. 2006 Peterbilt 379 Vehicle/Transmission Speed Sensor. Equip cars, trucks & SUVs with 2007 Peterbilt 379 Vehicle/Transmission Speed Sensor from AutoZone. Get Yours Today! We have the best products at the right price. Peterbilt 359 low air sensor location Discussion in 'Peterbilt Forum' started by Hogleg, Nov 24, 2016. Page 2 of 2 < Prev 1 2. Nov 26, 2016 #11 ... Peterbilt 379 Missing and shaky... Easton379 posted Mar 22, 2024. 1977 Pete 359 Brake light stuck on MikeB503 posted Mar 13, 2024. ….

Peterbilt 379 Vehicle/Transmission Speed Sensor; ... Peterbilt 388 Vehicle/Transmission Speed Sensor; Peterbilt 357 Vehicle/Transmission Speed Sensor; Show Less. Advice and How tos. What Are 2H, 4H, and 4L on 4x4?&nbsp; ... AutoZone Locations; Vehicle Make; Vehicle Model; Shop All Brands; Vehicle VIN Lookup; Gift Cards;Code 34 isn't the secondary engine speed sensor.....it's the only engine speed sensor on this engine and is located in the side of the front structure cover, close to the air compressor. If this sensor fails the engine will stop running. ... Peterbilt 379 Steer Axle Sidetrack421 posted Apr 26, 2024 at 9:56 PM. Super 10 to a FRO-16210C 10 speed ...Your Vehicle Speed sensor is the likely cause for the failure in reading MPH. The sensor is located in the transmission tail shaft and reads a tone wheel in the trans. Remove the sensor check for damage on the face of the sensor. And check with a screwdriver that the tone wheel is not loose on the shaft. ... 2000 379 Peterbilt vin# ***** Tuck ...SR Sensor signal valid - noisy: Dynamic Wheel Speed Sensor Fault. 2: 2: 4: 3: SAL Sensor signal valid - noisy: Dynamic Wheel Speed Sensor Fault. 3: 2: 5: 3: SAR Sensor signal valid - noisy: Dynamic Wheel Speed Sensor Fault. 4: 2: 2: 4: SL Sensor shorted or open: Static Wheel Speed Sensor Fault: 1: 4 or 5: 3: 4: SR Sensor shorted or open ...Motion sensor solar lights are a great addition to any outdoor space. They provide convenience, security, and energy efficiency. However, in order to fully enjoy the benefits of th...Thanks, ***** ***** uses two separate coils of wire to count gear teeth as they pass in front of the sensor. One coil is used by the ECM to sense vehicle speed. The other is sometimes used by the OEM to send a vehicle speed signal to the speedometer.With the sensor removed don't forget to check the tail shaft tone wheel for being tight.The best part is, our Peterbilt 379 Speed Sensor products start from as little as $48.99. When it comes to your Peterbilt 379, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Speed Sensor product and part brands so you can shop with complete confidence.DESCRIPTION. The WS-24TM wheel speed sensor is an electromagnetic device used to obtain vehicle speed information for an antilock controller. When the wheel rotates, the sensor and an exciter ring (sometimes called a “rotor” or “tone” wheel) generate a simple AC signal. This signal is sent to the controller, which analyzes the data and ... Peterbilt 379 speed sensor location, Verified. Hello. The brake pressure switch is behind the panel that is behind the brake and clutch pedals. You will probably find a few pressure switches back there. The one that your looking for is the largest one. The body is much wider than the others. Ask Your Own Medium and Heavy Trucks Question., Transmission Temp Sensor. $50.45. No reviews yet Write a Review. Add to Wish List. SKU: Q21-1002. Free Ground Shipping For orders over $300 - *Exclusions Apply*. Free Returns and Exchanges No Restocking fees. Amazing Selection We carry all top brands. , Step 2: Locate the Speed Sensor. For electronic speedometers, the speed sensor is typically near the transmission of your truck. It is responsible for sending signals to the speedometer to display the vehicle’s speed accurately. Consult the service manual for your specific Peterbilt model to locate the speed sensor accurately. , It typically states front or steer axle for the front end. Then for the rears depending on abs set up it refers to your rear drive axle and the other drive axle as the AA axle or additional axle. I recommend checking the left front drive of your truck and verify if your sensor on that wheel is your problem. Aaron Evans., Peterbilt Motors Company reserves the right to make changes at any time without notice. Safety Alerts Read and follow all of the safety alerts contained in this manual. They are …, Kenworth. Peterbilt. International. Mack. Volvo. Other Rides. All Products. Put the pedal back to the metal with this reliable aftermarket Freightliner throttle position sensor service kit from Raney's Truck Parts! Matches OEMs: 2587164C91, 131973, WIL131973., The pins on the ECM for the speedometer are 32 and 33. Most often when a speedometer is not working and the sensor has been changed. I often find the problem in the harness. When backing out the sensor 1/2 turn. There should be a 0.020 to 0.045 gap. Please reply back if you need more help or have more questions. I am happy to assist., 2008 peterbilt 389 isx 550 starts runs about 5 min then dies scanner says power supply ... hello. i have a 2016 pete 389 which i would like to put mirror mounted turn signal lights on. i have located the wires in the dash on both sides ... i have a 2003 379 peterbuilt with a cummings dohc.big red engine the front engine housing ..., Here's how to turn off the ATC on a Peterbilt: The Automatic Traction Control can be turned off on a semi-truck by pressing the ACT button in the cabin. If the light is on, the ACT is engaged and vice versa. You can also disengage the ACT on your Peterbilt by disconnecting the sensors or changing the settings in your ECU software., GP406 Discussion starter. 5 posts · Joined 2014. #1 · Sep 19, 2014. Hello, i have a 1999 379 Peterbilt with a 60 series Detroit DDEC 4 and a 13 speed transmission. my problem is the speedometer, 0 to 30 mph the needle stay at zero, over 30 mph everything is perfect, when i slow down below 30 the needle drop to zero (sometime is 35-40 mph, it ..., How to replace and install a speed sensor on Cummins ISX15#speedsensor #cummins isx15Playlist Recommendation: Truck Maintenance - Drive Line https://bit.ly/..., The throttle position sensor (TPS) monitors the position of the throttle body butterfly valve. This allows your vehicle's computer to regulate the air intake and manage the fuel and air mixture. Throttle position sensors are often mounted to the throttle body itself, and may have a lever arm that moves as the throttle changes position., Sorry to hear you're having troubles with your speedometer. If you are hundred percent certain that the gauge is good and you have a new sensor adjusted properly, thoroughly inspect your wiring and connector pins between your speed sensor and your engine ECM as well as your engine ECM and your instrument cluster for any corrosion or damage as well as any shorts for open circuits. , The most common causes of a speedometer that stopped working include are a faulty speed sensor, broken gear on the speedometer, damaged wiring, or a faulty engine control unit. ... Peterbilt 379 Steer Axle Sidetrack421 posted Apr 26, 2024 at 9:56 PM. Super 10 to a FRO-16210C 10 speed rhoup posted Apr 26, 2024 at 3:15 PM., Feb 6, 2013 · jump across the wires at the sensor end ohm out the wires make sure the harness is good. remove the sensors clean off the ends and reset the gap. screw all the way in till it stops and back it out 1/2 a turn. , Have your Mack engine running like new with this aftermarket speed sensor from Raney's Truck Parts! Matches OEMs: 20706327, 64MT348M, 935-0281002206. Toggle menu. Financing ... Peterbilt 379 . All Peterbilt 379; Peterbilt 379 Exterior . All Peterbilt 379 Exterior; Peterbilt 379 Fuel Tanks; Peterbilt 379 Battery Tool Boxes;, Get the best deals on an aftermarket 2004 Peterbilt 379 Speed Sensor. Lifetime Replacement Guarantee. Free 60-Day Returns. ... Location : Input Replaces OE Number ..., SKU: 16-04831. Price: $66.05. Add to cart. Extensive industry knowledge available when you need it. Contact us today for expert assistance sourcing your part. Contact Us. 1. 2. Browse Switches & Buzzers in the Peterbilt Electronic Parts & Accessories catalog from Peterbilt Parts., This manual contains information for the correct operation and maintenance of your PACCAR engine. Read and follow all safety instructions. Refer to the WARNING in the General Safety Instructions on page 8 . Keep this manual with the equipment. If the equipment is traded or sold, give the manual to the new owner., Peterbilt 379 C15 Engine Caterpillar Engine 2004, Rear Crankshaft Position Sensor by Walker Products®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with..., The pins on the ECM for the speedometer are 32 and 33. Most often when a speedometer is not working and the sensor has been changed. I often find the problem in the harness. When backing out the sensor 1/2 turn. There should be a 0.020 to 0.045 gap. Please reply back if you need more help or have more questions. I am happy to assist., The ABS indicator lamp will display inactive diagnostic blink codes when the diagnostic blink code switch is depressed and released two times. Inactive trouble codes, and event history, may be retrieved and cleared by using a hand-held or PC-based diagnostic tool, such as the Bendix® AComTM Diagnostics software., If by jumping the wires works, where is that relay located so I can replace it? Thanks brenes-built, Mar 5, 2012. brenes-built, Mar 5, 2012 #6. ... 2001 peterbilt 379 Detroit 12.7... Tylers1220 posted Apr 29, 2024 at 2:01 PM. Best Turbo for 12.7? Elroythekid posted Apr 29, 2024 at 8:39 AM. Loading..., Peterbilt faulty fan switch on dash Discussion in 'Peterbilt Forum' started by bmac211, Jul 30, 2020. Jul 30 ... The older trucks do have issues with melting blower speed switches. If you find a melted switch/connection you need to check the current draw of the blower motor. ... Peterbilt 379 Missing and shaky... Easton379 posted Mar 22, 2024., GP406 Discussion starter. 5 posts · Joined 2014. #1 · Sep 19, 2014. Hello, i have a 1999 379 Peterbilt with a 60 series Detroit DDEC 4 and a 13 speed transmission. my problem is the speedometer, 0 to 30 mph the needle stay at zero, over 30 mph everything is perfect, when i slow down below 30 the needle drop to zero (sometime is 35-40 mph, it ..., Find the speed Sensor: It is usually located near the drive shaft on the transmission. Unplug the Sensor: Disconnect the wires by unplugging the connector. Remove the Old Sensor: Use a wrench to remove the old sensor from the transmission. Install the New Sensor: Place the new sensor in the same position as the old one and tighten it with a ..., OBD2 Sensors. >> Catepillar C15 I6 Engine Sensor Locations. C15 ACERT Engine Driver Side. C15 ACERT Engine showing ECT location. Fuel injectors (under valve cover center of cylinder head) Camshaft position sensor (CMP) (located on side at top of timing cover) Oil pressure sensor (driver’s side of engine block) Fuel Temp Sensor (on top of fuel ..., I cleaned well around the pedal area and wiggled wires around engine bay up to firewall and from sensor to floor... and then it was working again. ... 2001 peterbilt 379 Detroit 12.7... Tylers1220 posted Apr 29, 2024 at 2:01 PM. Best Turbo for 12.7? Elroythekid posted Apr 29, 2024 at 8:39 AM. Loading..., STEERING COLUMN-MOUNTED CONTROLS PART 4: CONTROLS AND DISPLAYS Electric Horn Trailer Brake Hand Valve Your Peterbilt has an electric horn. To sound the horn, press on the bar in the center of the steering wheel Electric Horn Bar 02975A Air Horn This hand valve provides air pressure to apply the trailer brakes only., Browse a wide selection of new and used PETERBILT 379 Heavy Duty Trucks for sale near you at ... Truck Location: Salt Lake City, Utah 84104. Stock Number: XD484409. Number of Rear ... 2007 Peterbilt 379 C-15 Cat 13 speed 355 gears 550 HP 270" WB air slide fifth wheel 70" bunk w/fridge 8,000 miles on platinum overhaul with …, Feb 6, 2013 · jump across the wires at the sensor end ohm out the wires make sure the harness is good. remove the sensors clean off the ends and reset the gap. screw all the way in till it stops and back it out 1/2 a turn. , 2004 Peterbilt 379 Trucks For Sale: 10 Trucks Near Me - Find New and Used 2004 Peterbilt 379 Trucks on Commercial Truck Trader. Commercial Truck Trader Home; ... Trucks by Transmission Speed. 10 (3) 18 (2) Trucks by Transmission Type. Manual (5) Available Years. 2004 Peterbilt 379 - 10 Trucks., 3406B oil pressure. My engine is a 3406B 4mg the engine idles about 25-30 lb and pulls 45-50 hot. Correct me if I am wrong but i am pretty sure oil pressure comes from the rods and mains and cam bearings. My question is is the oil pressure too low and do i need to roll in a set of bearings or is this pressure within the operating limits.