Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have my water temp gauge not reading at all on my c15
I have my water temp gauge not reading at all on my c15 acert? No engine lights or nothing gauge just started being erratic now it bottomed out and does not work at all.… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
I turn my key on and push button to start and it pops
I turn my key on and push button to start and it pops ignition breaker … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
I HAVE 2002 peterbilt 379 vin 1XP-5DB9X-0-2N573748, ITS A
I HAVE 2002 peterbilt 379 vin 1XP-5DB9X-0-2N573748 … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
2001 Peterbilt 379 Turn signal issues. 2001 Peterbilt 379.
2001 Peterbilt 379 Turn signal issues JA: What's the make, model, and year of your heavy truck? Customer: 2001 Peterbilt 379 JA: The truck Mechanic is familiar with most Turn signal issues. Would you … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
Engine fan won't turn off. 1994 Pete 379 with 6nz cat has a
Engine fan won't turn off. 1994 Pete 379 with 6nz cat has a Horton fan clutch … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
2001 peterbilt 379 break lights are staying on even after
2001 peterbilt 379 break lights are staying on even after replacing the break light pressure switch on the floor by the steering column. … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
I have a C13 ACERT that misses and throws smoke on the first
I have a C13 ACERT that misses and throws white smoke on the first load of the day. After working it's way through this seeming tantrum it runs fine the rest of the day. I've also had the check engine… read more
Gary A.
Gary A.
Associates in Diesel Technology and Business Management
8 satisfied customers
We received fault code spn 1321 fmi 14. we are at the
we received fault code spn 1321 fmi 14. we are at the facility to deliver a load that is due at 6 am tomorrow morning and need assistance getting the truck started. please help … read more
Andrew G.
Andrew G.
Heavy Truck Mechanic
Heavy Duty Equipment - Truck and Transport Mechanic
4 satisfied customers
2007 peterbilt 379 blowing fuse when I turn key on no dash
2007 peterbilt 379 blowing fuse when I turn key on no dash lights or gauges … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
2004 Peterbilt 379.. very high coolant temp code. I replaced
2004 Peterbilt 379.. very high coolant temp code. I replaced both coolant sensors one for gauge. One for ecm and code still active I can't clear code from truck … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
I don't have brake lights on the truck or trailer, have turn
I don't have brake lights on the truck or trailer, have turn and 4 ways though. It's on a 1992-peterbilt-379. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 379 Pete, the jake does not work. I have no power
I have a 379 Pete, the jake does not work. I have no power to the jake brake switch. Is this my problem?? … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
I have a1995 379 series pete, one day my speedo temp, fuel
hello i have a1995 379 series pete, one day my speedo temp, fuel tach and volt gauges stopped working , found a blown fuse replaced fuse mile down the road it blows again now i have still no gauges an… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2005 peterbilt 379 with a cat acert C15 in it the
I have a 2005 peterbilt 379 with a cat acert C15 in it the blower motor will not work on any speed I have gotten the multimeter out and started checking when I go to any point in the system be at the … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
3406 cat engine in 379 peterbilt needs rebuilt. was
3406 cat engine in 379 peterbilt needs rebuilt. was wondering if anyone can help me figure out which one i have because it does not appear to be the arriginal engine and all the plates are not on the … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 1992 Peterbilt 379 with a N14. When you start the
I have a 1992 Peterbilt 379 with a N14. When you start the truck cold, the idle is at 650-700 rpm, but 15-16 minutes later it will increase to 1000 rpm and stay there the rest of the day. I have timed… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Have a '90 peterbilt 379 with cummins ntc 400. Yesterday I
Have a '90 peterbilt 379 with cummins ntc 400. Yesterday I started it to warm it up. About 20 minutes in, I heard a whining noise, like loose belt, then some higher pitched grinding. I ran out and shu… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
1988 peterbilt 379 with cummins 350 big cam engine im having
1988 peterbilt 379 with cummins 350 big cam engine im having starting problems after putting in new batteries new starter new ignition switch needs a jump to start on cold mornings… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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