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3126 cat starts and dies or won't used to die a few time and
3126 cat starts and dies or won't used to die a few time and then fine. Just got back three thousand mile trip. Now won't start at all if does die like shut key off. Showing coax 71 49 34 … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
I have an M1078 military cargo truck with a CAT 3126, the
I have an M1078 military cargo truck with a CAT 3126, the engine starts fine and runs for 10 to 30 seconds and then shuts down. If I can catch it while it is starting to die, I can pump the throttle a… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I have a 99 Freightliner FL 80 with a cat 3126. It is acting
Hi, I have a 99 Freightliner FL 80 with a cat 3126. It is acting like it is running out of fuel. I have replaced the filter, and have checked it several times. One time, the filter was only half full.… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
784 satisfied customers
Cat 3126 sluggish when cold running fine as soon as t
cat 3126 sluggish when cold running fine as soon as t reaches 150 temp it wakes up any clues no codes… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
I have a 2000 C6500 with a CAT 3126 engine serial #8YL51753,
I have a 2000 C6500 with a CAT 3126 engine serial #8YL51753, customer called truck died after hot run, went up to check truck will start with either, wont idle, changed fuel filter, same thing added f… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
This question is Man who I have contacted before about my
This question is for Cat Man who I have contacted before about my 2000 Freightliner FL70 with a CAT 3126. I originally contacted Cat Man because the 3126 would not start when the engine was cold, but … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
I have a 2004 freightliner business class with a cat 3126 motor.
I have a 2004 freightliner business class with a cat 3126 motor. Truck has no power especially when loaded. When it gets hot some times it will not start. Once the motor is cold it fires right up. We … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
My question is about the air intake heater system on my 2000
My question is about the air intake heater system on my 2000 Freightliner FL70 that has a Cat 3126 engine. I have had the truck since March of this year. Initially the indicator light for warming the … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
. Hoping Cat Man can help here. I have a 1999 5Ton with a
Hi. Hoping Cat Man can help here. I have a 1999 5Ton with a 3126 Cat Engine. First thing in the morning when the engine is cold, the truck starts no problem. Once the engine is warm, you shut the truc… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
1999 GMC C7500 3126 Cat. Occasional hard start. "No ECM
1999 GMC C7500 3126 Cat. Occasional hard start. "No ECM detected" when hooking up scanner.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
I have a 1999 3126 with starting issues. It starts sometimes
I have a 1999 3126 b with starting issues. It starts sometimes cold but most of the time not and even when its hot it won't start either. But if you bump start it, it fires rate up any suggestions???… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
I have a Cat C7 that has been completely rebuilt. New piston,
I have a Cat C7 that has been completely rebuilt. New piston, rings, bearings salvage cylinders, head ,valves, the works. Runs great when cold then I get a code for the number 4 injector voltage. Will… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
1999 Chevy C6500 3126 7AS31663 stalled while driving, swapped
1999 Chevy C6500 3126 7AS31663 stalled while driving, swapped IAPCV and speed sensors out of one our other trucks that starts up and runs, put a IAPCV harness and check this morning with ohm meter its… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
I have 1997 3126 cat engine rebuilt,it is down on power since
I have 1997 3126 cat engine rebuilt,it is down on power since getting all back together, first found o rings missing on 3 injectors, had the injectors cleaned and replaced one with a remanufactured on… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
Hi im daniel i have a freight liner with a 2002 3126 cat engine
Hi im daniel i have a freight liner with a 2002 3126 cat engine vin of Ckm64456 My problem is it will crank over but not start if you push it with a fork lift she fires right up and will continue star… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,509 satisfied customers
I have a 2005 freightliner with a 60 series engine.
I have a 2005 freightliner with a 60 series engine. The truck stalled then re started. The truck will start up and idle fine. The truck ran all night and idled fine. The problem is when the truck is p… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
784 satisfied customers
I have a 1998 Terex T340 Truck Crane with a Cummins ISC 8.3
I have a 1998 Terex T340 Truck Crane with a Cummins ISC 8.3 electronic engine. Problem: When cold starts and runs fine. After running for a few hours engine sputters when trying to accelerate. It will… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
I am working on a 2005 IH 4300 w/DT466 , also having similar
I am working on a 2005 IH 4300 w/DT466 , also having similar problems. The truck started off w/ problem of stalling sometimes when hot. No codes & starts back up. I replaced cam sensor , worked ok for… read more
diesel-tech
diesel-tech
Owner of landrys truck repair llc
130 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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