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Cat man, I am working on a CAT 3126 serial no. HEP44992 The
Hello Cat man, I am working on a CAT 3126 serial no. HEP44992 The truck is going into limp mode am I am getting a flash code of 39. I tried a different IAP sensor with no change. I tried turning over … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
My 3126 has a Huey fuel system and there is oil in the fuel
My 3126 has a Huey fuel system and there is oil in the fuel tank.can I just change the pump? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
We have a 3126 sn CKM34634 it came into the shop running but
we have a 3126 sn CKM34634 it came into the shop running but smoking bad. We found coolant temp sensor was bad , that took some of the smoke away, we thought possible injector seals. We removed the in… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
04 CHEV C6500 3126 CAT, SMOKES WHITE HEAVILY ON START UP,
04 CHEV C6500 3126 CAT, SMOKES WHITE HEAVILY ON START UP, LET IDLE TIL SIMMERS(WARM),WILL CONTINUE TO SMOKE GOING DOWN THE ROAD ,THEN GOES AWAY TEMPORARILY, I CANT COMPLAIN ABOUT THE POWER,HAS 440 K M… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
04 ford f650 with 3126 it has not starting ecm is powering
04 ford f650 with 3126 it has not starting ecm is powering up it has a different type of pump than what I am used to seeimg on these motors this pump i am used to seeing on a c7 which is a very simila… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
I have a 3126 Cat engine. I am getting a lot of fuel in
Hi. I have a 3126 Cat engine. I am getting a lot of fuel in the coolant. Enough that it is pushing fluid out of the over flow. Do these engines have injector cups? Any other ideas on how fuel gets int… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
my name is***** have a Cat325cl with a 3126 engine.
Hi my name is***** have a Cat325cl with a 3126 engine. I'm having problems with the injection actuation pressure rapidly reducing when under load. I have hooked up ET and monitored fuel pressure and a… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
I have a 2001 Itasca Horizon with Freightliner and Cat 3126E engine. I started driving abo
I have a 2001 Itasca Horizon with Freightliner and Cat 3126E engine. I started driving about 45 minutes, all highway, when the check engine light came on. Guages at dash read normal and no unusual noi… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
1999 chevy c6500 kodiak with 3126 serial 7as31663 overheated
1999 chevy c6500 kodiak with 3126 serial 7as31663 overheated engine while driving was trying to make it back to yard eninge shutoff, next day engine started backup found waterpump bad, replaced waterp… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
Im working on a c7 in a truck. I have 1740psi injection actuation
Im working on a c7 in a truck. I have 1740psi injection actuation pressure at idle. have changed huei pump, iap sensor, injectors, and ecm. fuel pressure is 60 at idle. truck misses bad below 2000rpm.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
I have a 2005 Ford 750 with a C7. Code 164-11 Injection Actuation
I have a 2005 Ford 750 with a C7. Code 164-11 Injection Actuation fault. Idles ok, bucks and sputters when accelerate. I have ET software. When I do an actuation test, the actual pressure at high idle… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
i have a 1999 isuzu fsr i am getting oil in my coolant i read
i have a 1999 isuzu fsr i am getting oil in my coolant i read oil cooler or o rings or injector cups where should i start not getting water in oil… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a 2000 3126 that is throwing a IAP code, PID 164, FMI
I have a 2000 3126 that is throwing a IAP code, PID 164, FMI 11 flash code 39 the check engine light flashes and it will die as it idles down. We have replaced the high pressure pump complete with fue… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
What is making the huei pump only produce 500 psi until I unplug
What is making the huei pump only produce 500 psi until I unplug the injection control pressure sensor on top the head. With it unplugged the huei pump will put out 5000psi… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
vin #2h507010 We have a continual problem with cold stating
vin #2h507010 We have a continual problem with cold stating after the truck sits over night or long weekend.It will start and idle rough and have no treadle response for a minute or two.It will eventu… read more
dieseldoctorkev
dieseldoctorkev
power system tech 1
76 satisfied customers
I have a 3126 cat engine in a residential trash truck. Oil
I have a 3126 cat engine in a residential trash truck. Oil is getting in the fuel tank at a rate of 2.5 gallons for every 6 to 7 hours of use. I have already replaced the injector o-rings. No help at … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,206 satisfied customers
04 CHEV 6500 W/CAT 3126 ,ALLISON TRANS (TRANS WAS JUST REBUILT.
04 CHEV 6500 W/CAT 3126 ,ALLISON TRANS (TRANS WAS JUST REBUILT. 420777 MILES, I BELIEVE I HAVE #1 INJECTOR BAD ,O-RINGS BAD -DIESEL IN OIL ,OIL IN DIESEL. I MAY START IT UP LOW POWER LIGHT MAY GO ON, … read more
Cat Man
Cat Man
Cat Engine Expert
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10,206 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
10,206 satisfied customers
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