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I have a 2009 peterbilt 387 with a 485 Cummins ,, while
I have a 2009 peterbilt 387 with a 485 Cummins ,, while driving if I hit a bump in the road,, the engine stalls for a few seconds then gets going … read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
My heater/ac fan in the cab of my 2007 peterbilt 387 is not
Hi, my heater/ac fan in the cab of my 2007 peterbilt 387 is not working. I have checked every fuse/breaker I can find (behind glove box, in battery box, outside passenger firewall) and have put a test… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
I need to know the switch # 1 position of the service brake
i need to know the switch # 1 position of the service brake pedal in peterbilt 369 and 387. the switch is on. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,891 satisfied customers
Got a 06 Peterbilt 387 Pacer motor the dash lights blink on
Got a 06 Peterbilt 387 Pacer motor the dash lights blink on and off like it's in limp mode … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
I have an 04 peterbilt the check engine light and stop
I have an 04 peterbilt the check engine light and stop engine light comes on and warning buzzer sounds and oil pressure is displayed in the dash. Checked oil level it is fine oil temp is at 175. This … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
My 09 Peterbilt 387 has no battery switch, but when I open
Hi ... my 09 Peterbilt 387 has no battery switch , but when I open the door the cab lights come on although the ignition switch is not on (no switch in it) , and also the signal lights and some other … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
I have 2000 Nov Peterbilt 387 the stop lights constantly on,
hi, I have 2000 Nov Peterbilt 387 the stop lights constantly on, when I check turn signals for both left and right they seemed to be working correctly, but when the are no turn signals or hazard light… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,891 satisfied customers
My dash panel lights in my 2004 peterbilt 379 just quit
my dash panel lights in my 2004 peterbilt 379 just quit working … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
Yesterday my speedometer, odometer, voltage gauge and
Yesterday my speedometer, odometer, voltage gauge and instrument light cluster stopped working. Checked fuses and relays in fuse box as well as relay directly behind gauges. Could not resolve the prob… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,891 satisfied customers
Im an O/O with a 2009 Pete 387. I purchased the extra
Im an O/O with a 2009 Pete 387. I purchased the extra guage/dash panel kit off of ebay. Checked/tested the guages and statt guage test was good on self test. However i soon found that pyro, boost, fro… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,891 satisfied customers
1994 Peterbilt 379 with 60 series Detroit diesel- The brake
1994 Peterbilt 379 with 60 series Detroit diesel- The brake lights only come on if I step on the brakes real hard. If I am using the brakes to slow down not stepping on them hard, they do not come one… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
I have a 2011 389 pete it has no power to the washer motor.
I have a 2011 389 pete it has no power to the washer motor. Havea wireing schematic looking for # ***** wire from turn stick module but icant find the module anywhere.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,891 satisfied customers
I have a 1991 peterbilt 379 with a cummings n14 celect , the
I have a 1991 peterbilt 379 with a cummings n14 celect , the engine is going to a safe idle mode when the oil preasure gauge drops to zero. the dealer ship advised me to replace the ecm which I did bu… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
19 satisfied customers
have a 2001 Peterbilt 387 10 speed cat C-12, when we go through
have a 2001 Peterbilt 387 10 speed cat C-12, when we go through a really hard rain all our tach ,speedometer,oil pressure,water temp, turbo boost. oil temps all freeze and stop working.Sometimes they … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
I have a question about gauges in a 2004 peterbilt 387.
I have a question about gauges in a 2004 peterbilt 387 (c15). My truck was set up for the fans to kick on at 216 degrees and the gauge would read in the red whenever the fans would kick on and so I fo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
I have a 2002 387 Peterbilt with an ISX Cummins engine and
I have a 2002 387 Peterbilt with an ISX Cummins engine and a Meritor freedom line transmission. I just had the TCU on top replaced and now when I turn on the lights, my turn signal indicators light up… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
Hi I have a 03 peterbilt 387 and lately the cleareance lights
Hi I have a 03 peterbilt 387 and lately the cleareance lights on top of the cab work but after a couple of minutes they all go off, I checked and changed all the bulbs and 2 sockets that i thought the… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
c-15 475hp engine Peterbilt 387 02, on uphill one of hoses
c-15 475hp engine Peterbilt 387 02', on uphill one of hoses for sleeper heating bursted, we stopped at the side, I closed all valves for sleeper heating, when i turned on truck oil lamp went on couple… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

2,891 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,530 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,892 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,243 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

991 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

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dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

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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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