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Customer presents a 2003 GMC VIN- ***************** with a
Good Morning, Customer presents a 2003 GMC VIN- ***************** with a Cat 3126 ESN- HEP18041. Customer states Oil Pressure, Battery Voltage, Engine Temp and Fuel gauges are INOP. Customer further s… read more
Mike Mcmillan
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2001 Peterbilt 3126 Cat Engine, no start condition also
2001 Peterbilt 3126 Cat Engine , no start condition also diagnostic tool won't communicate with ECM… read more
Daniel Wilson
Daniel Wilson
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2003 f650 3126 cat died wont start check engine light does
2003 f650 3126 cat died wont start check engine light does not come on now communication with cat et, have power and ground to ecm and ignition hot on pin 70, replaced ecm with reman from cat still ca… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I am purchasing a 1998 Sea Ray boat with 3126 Cat Motors. I
I am purchasing a 1998 Sea Ray boat with 3126 Cat Motors. I believe they are 420 hp each. Do these motors have a diagnostic port? If so is it unique to Cat or is it OBD 2? … read more
catmastertech
catmastertech
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I am working on a 2005 c4500 topkick with a duramax. It will
I am working on a 2005 c4500 topkick with a duramax. It will not start unless you give it a shot of either, the fuel rail pressure while cranking only gets to about 1900psi and the desired pressure is… read more
Daniel Wilson
Daniel Wilson
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2002 GMC 7500 7.2 DSL, with CAT 3126, flashing MIL, Code 58,
2002 GMC 7500 7.2 DSL, with CAT 3126, flashing MIL, Code 58, loss of power, where do we go from here?… read more
Cat Man
Cat Man
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I have a 2003 GMC 7500 with a 3126 cat, truck came in no
Hello, I have a 2003 GMC 7500 with a 3126 cat, truck came in no start no crank, could not communicate with ecm, checked power and grounds found all ok, replace ecm, now I can communicate with ecm and … read more
Cat Man
Cat Man
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I have a cat 262C skidsteer that the park brake won't
I have a cat 262C skidsteer that the park brake won't release on... … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a safari magnum with a cat 3126. engine serial number
Hello, I have a safari magnum with a cat 3126. engine serial number 1wm06869. Customer said he was driving and the engine just shut off. engine will crank fine but won't start. Checked fuel quality an… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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2001 GMC T8500 with CAT 3126, intermittent check engine
2001 GMC T8500 with CAT 3126, intermittent check engine light, engine loss of power after running for aprox 1 hours. Can not connect with Prolink Ultra, can not see any modules on the network. No wiri… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Im working on a 2001 cat 3126. Died while driving cranks but
Im working on a 2001 cat 3126. Died while driving cranks but no start. No communication on pro link. engine serial #ckm19576… read more
Cat Man
Cat Man
Cat Engine Expert
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Mr. Cat Man, I have a peterbilt with a C15 accert. Im trying
Mr. Cat Man, I have a peterbilt with a C15 accert. Im trying to connect with cat et and im getting an error saying check the cable and connectors between RP1210 compliant device and the ecm. I have ch… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I need a wiring diagram of the pin input and out puts on a
I need a wiring diagram of the pin input and out puts on a 3126 Cat its in a Freightliner 1FVACXAK93HK20610. SERIAL#CKM54644. WONT START WILL NOT COMMUNICATE! I really want to check power and grounds … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I have a 2000 gmc c7500 with a 3126 cat in it. We hooked a
I have a 2000 gmc c7500 with a 3126 cat in it. We hooked a Cat Et up to it this evening with the right adapter I assume...7x-1714. The Cat et program says 1 ECM detected...initializing but not does an… read more
Cat Man
Cat Man
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2003 GMC c6500 runs fine, no communication on data link. CAT
2003 GMC c6500 runs fine, no communication on data link. CAT 3126, Allison auto, hydraulic abs. I use both nexiq USB link or CAT adapter II with all OEM softwares. My equipment connects to every other… read more
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Travis A. Wells
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Im working on a 2009 Sterling tractor with an acert c15. Truck
Im working on a 2009 Sterling tractor with an acert c15. Truck runs for 20-30 mins then dies like someone turned off the key. I can get two diag codes out of the dash cluster, SID 25 4 FAIL 07, and SI… read more
Cat Man
Cat Man
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I have a 98 kw w900 with 3406 e it missed a little then ran
I have a 98 kw w900 with 3406 e it missed a little then ran horrible now wont start at all took ecm to cat tested fine they said one fault was intermittent power but it has proper voltage to ecm from … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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2000 GMC topkick with a 3126 cat engine. Shut off while running,
2000 GMC topkick with a 3126 cat engine. Shut off while running, will not restart. Checked voltage to ecm. 12 volts to pins 52 an 53 .I have 1200 psi. pressure in high pressure manifold while cranking… read more
Cat Man
Cat Man
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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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