Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
04 peterbilt 379 with c15. Engine fan won't come on unless I
04 peterbilt 379 with c15 . Engine fan won't come on unless I do it manually with the switch in the dash … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
48 satisfied customers
I have a 1997 3406e cat the runs hot when its loaded and
I have a 1997 3406e cat the runs hot when its loaded and only when u accelerate on it. It jumps in temp.very quickly and the light and buzzer goes off until the temps come back down. It has even shut … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Bxs c15 Acert not getting up to temp just had thermostats
Bxs c15 Acert not getting up to temp just had thermostats replaced and thermostat housings and seals all replaced temps are in the upper 40's low 50's here runs at about 150 to 160 down the road heat … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Truck running too cool. C15 6nz had thermostat replaced.
Truck running too cool. C15 6nz had thermostat replaced. After warmup, takes 20 miles to get temp to 190. Temp drops 15 degrees going thru a small town, then it will pick back up in few miles. At 800 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 98 379 that the fan wont kick on after an inframe
I have a 98 379 that the fan wont kick on after an inframe new water pump, thermostats, new sensors. On the computer it says fan is constantly on … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
570 satisfied customers
Cat Man, I have a Cummins and I haven't learned my way
Hi Cat Man , I have a Cummins and I haven't learned my way around Just Answer yet. 1999 Peterbilt 379 N14 Cummins Celect. Oil Temperature gauge inoperable and coolant/ antifreeze won't build heat unle… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,886 satisfied customers
Peterbilt 2004 379 bxs 10888 cat c15 -problem is engine when
peterbilt 2004 379 bxs 10888 cat c15 -problem is engine when running down road at cruise, engine will cool to about 150 degrees. sit at loading dock and idle will run about 190. pull a hill will come … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Put all new injectors in are 3406e cat. We can't get it to
Put all new injectors in are 3406e cat . We can't get it to start but it will start with starting fluid and run just fine . Before starting fluid there was no tachometer signal when trying to start it… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
DO THEY MAKE A COOLER THERMOSTAT FOR A 3116 CAT, I KNOW OEM
DO THEY MAKE A COOLER THERMOSTAT FOR A 3116 CAT, I KNOW OEM IS AT 190 DEGREES, THIS UNIT SEEMS TO RUN WARM WHEN LOADED. MANUAL GAUGE READS UP TO 220, BUT WHEN CHECK WITH HEAT GUN, THAT IS ONLY READY A… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Ecm coolant sensor is reading 20 degrees higher than dash
ecm coolant sensor is reading 20 degrees higher than dash gauge. when dash gauge reaches 200 the hot water light comes on then few seconds later stop engine light. check with inferred temp and dash ga… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a 6NZ 550 cat. About 6 months ago I had, what I
I have a 6NZ 550 cat. About 6 months ago I had, what I thought at the time, a water thermostat stuck open. I replaced both thermostats and all housing seals. 2 months later it started same thing. I ha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Cat man! I have a 1996 peterbilt 379 with a 3406E, serial#
hello cat man! I have a 1996 peterbilt 379 with a 3406E, serial# ***** i'm looking at a 1999 3406E serial# ***** in a Volvo, both are original to the trucks, my question is can the Volvo motor be put … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I'm switching a 99 peterbilt from Detroit ddec3 to cat 3406e
I'm switching a 99 peterbilt from Detroit ddec3 to cat 3406e 40 pin. What do I need for the cab. I have the harness from the ecm to the firewall from a donor truck. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
cat man... I have a "BXS" acert engine that will not
hello cat man... I have a "BXS" acert engine that will not warm up to normal operating temp. ive changed thermostats several times, changed waterpump, radiator, and temp gauge. the engine runs cool in… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a c15 cat that wont get over 150 degrees. I replaced
I have a c15 cat that wont get over 150 degrees. I replaced both thermostats and seals, bled air from the system, and still have the same problem. It is a single turbo 6NZ motor. Any ideas?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Hi Cat Man, Iam working on a 1999 Peterbilt 379 with a 3406E
Hi Cat Man, I'am working on a 1999 Peterbilt 379 with a 3406E CAT in it, after sitting for a couple of days it will start up right away like usual but after about 10 seconds it will stall out.To get i… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
We have a c15 cat assert engine that is running to cold. SDP
We have a c15 cat assert engine that is running to cold. SDP serial number. We cannot get the temperature up. What would be the cause and what should we try to fix this problem?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 97 Volvo with a 3406E engine 5EK family. I am replacing
I have a 97 Volvo with a 3406E engine 5EK family. I am replacing the temp regulator (thermostat). I have it disassembled, cleaned and installed new seal in the housing. The new thermostat is a genuine… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 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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