Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have an fl80 3126B and it has no power nobody seems to
I have an fl80 3126B and it has no power nobody seems to find the problem. Everyday in the am when I go to work truck work ok but as soon as the truck gets to normal temp 180-200 it losses all power I… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
Code 39 and 15 came up. Changed the sensor but not the valve
Code 39 and 15 came up. Changed the sensor but not the valve that goes into the heui yet. It started rough once and then shut it off and retired and would not start … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
Cat 3126b 450hp 3gs02038 in my boat. Loud knock out of the
Cat 3126b 450hp 3gs02038 in my boat. Loud knock out of the air intake at low rpms. I un-plugged each injector one at a time and it stopped when #6 was in-plugged. I replaced #6 injector and there was … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,307 satisfied customers
I have a 1998 Gmc 6500 with a 3126 cat cranks over fine but
I have a 1998 Gmc 6500 with a 3126 cat cranks over fine but will not run without a helper shot of ether. Once it starts it runs fine no codes once you shut it off it will start back up but only immedi… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
98 cat 3126b wont start noticed the wait light off and one
98 cat 3126b wont start noticed the wait light off and one other light far left of dash these must light to start have no idea where the relays are to light everything up PS 6500 Wrecker … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
I have a 2001 cat 3126 ser no. 8yl74019 Starts fine runs
I have a 2001 cat 3126 ser no. 8yl74019 Starts fine runs great until up to Temperature,then will stall in will not restart without ether Then when it does start You have to use You have to keep foot o… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
Has no fuel while cranking. 2004 Chevrolet C-6500 Cat C7.
Replaced high pressure injection pump, blew out the fuel galley in the head … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
2000 GMC C6500 Wth cat motor wont start by it's own, it
2000 GMC C6500 Wth cat motor wont start by it's own, it start with ether, i have replaced fuel pump & rpm timing sensor, still no help can some one help me out.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
Have a 3126b cat motor serial number 1WM07663, put on a
Have a 3126b cat motor serial number 1WM07663, put on a rebuilt Huei pump yesterday, And now I can't get it to run, put on a fuel pressure gauge at the base of the filter and it doesn't seem like I'm … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
Curtis, I recently bought a case 586D with the 188d engine.
Hi Curtis, I recently bought a case 586D with the 188d engine. The guy that owned it before used ether to start. Just a very small shot will get it going and after that runs fine. Engine sounds great … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
Cat c7 serial #71176 wont run will start with ipr unplugged
cat c7 serial #71176 wont run will start with ipr unplugged and a shot of either dies out when i plug in the ipr new heui pump… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
How is your service priced? Cat 3126 in '99, Trying to! New
Trying to! New speed/timing sensor, new fuel transfer pump, checked power to ecm (from harness side), pin 70 has 9.8 to 10 volts when cranking, Fuel restrictor at back of head works, with no sign of metal fragments. Also, sprayed contact cleaner on both ECM pins and sockets. This cat 3126 is in '99 GMC. Engine serial #7AS79444. Oh, cannot check flash codes as vehicle does not have cruise control. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
Another question Man if I could please. A smaller 2001 3126
Another question for Cat Man if I could please. A smaller 2001 3126 Serial#7AS71738. When the engine is cold it usually starts, sometimes it just cranks and you have to give it a little shot of starti… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
i have a 1999 international with a dt466e and i have a no
i have a 1999 international with a dt466e and i have a no start condition. 1. Truck will crank 2. no actual icp pressure but has desired pressure 3. oil pressure show on dash but not on computer until… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Working on a 3406B (manual pump) Caterpillar. Very hard to
Working on a 3406B (manual pump) Caterpillar. Very hard to start, sometimes wont start without ether. Once started it runs fine with the exception that it will kill at idle sometimes and wont restart … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
I have a cat 3126b it cranks but will not start without ether.
I have a cat 3126b it cranks but will not start without ether. It runs fine on its own after starting. There is a small amount of oil around the injection pressure sensor and along the valve cover tow… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
I have a dignostic on my truck that at 45mph the engine dies
I have a dignostic on my truck that at 45mph the engine dies down and displays this code, engine is a Cat 3126B, Ecu 128, PID-164, Fail 02… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
have a 1999 12.7 Detroit; intermintent no start. cranks but
have a 1999 12.7 Detroit; intermintent no start. cranks but no fire. changed crank sensor, fuel filter, check valve, fuel pump, jumped past ing. switch. will start with small shot ether. runs fine onc… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,240 satisfied customers
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