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Related Medium and Heavy Trucks Questions
I have a 2002 Freightliner FL70 with a Cat 3126 CKM18004.
I have a 2002 Freightliner FL70 with a Cat 3126 CKM18004. The truck does run but I have no RPM, Speedometer, Oil Pressure, Water Temp and "No Eng" showing on the dash display. I have an ECU 128 SID 25… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
2002 Freightliner FL70 C7 3126 Cat Motor. First, over a year
2002 Freightliner FL70 C7 3126 Cat Motor . First, over a year ago, all dash lights and instrumentation including speedo just stopped working. Check engine light and fuel gauge do work. This truck has … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Have a 2003 Freightliner Fl70. Will not crank. Just got the
Have a 2003 Freightliner Fl70. Will not crank. JA: How long has the vehicle failed to start after cranking? Has the security system been triggered recently? Customer: Just got the truck. JA: What's th… read more
RichardH416
RichardH416
Resident Tech
Associates
75 satisfied customers
I have a 3126 cat that runs but it starts to miss and smoke
I have a 3126 cat that runs but it starts to miss and smoke when you get it under a load … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
Husband ran Cat 3126 out of fuel last week. Changed out all
Husband ran Cat 3126 out of fuel last week. Changed out all filters and has ran rough ever since. Now it will die and have to wait until it cools off before it will start. Any suggestions? … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 3126 in o2 FL70 dump truck 7 yarder. Lately I have
I have a 3126 in o2 FL70 dump truck 7 yarder. Lately I have to crank the engine longer for it to start like 15 to 25 seconds. Battery ate good and I plug it in on over night for it to trickle charge. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 2001 freightliner FL70 with cat 3126 wont start
i have a 2001 freightliner FL70 with cat 3126 wont start check engine light and glow plug light flash intermittantly … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
MY 1999 FL70 CAT 3126 IS LOSING POWER & SHUTTING ITSELF OFF
MY 1999 FL70 CAT 3126 IS LOSING POWER & SHUTTING ITSELF OFF BUT ONCE I RESTART IT AFTER PUMPING THE GAS PEDAL IT DRIVES FOR A LITTLE BIT & LOSES POWER & SHUTS OFF. KEPT REPEATING TILL I GOT OFF THE HI… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
We have a fl70 with a cat 3126 (330hp) we have a new race
we have a fl70 with a cat 3126 (330hp) we have a new race trailer that weighs 25,000 loaded and the truck simply will not pull the trailer up a grade. Does this make sense that the truck is that under… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 2001 cat 3126 in a fl70 box truck with 276,000
i have a 2001 cat 3126 in a fl70 box truck with 276,000 miles the flash codes are 39 15 49 12 61 69. It starts up then the engine protect light comes on and shuts the motor down. I cleaned all connect… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 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
829 satisfied customers
I have a 2001 Freightliner FL70 with a CAT 3126 engine. It
I have a 2001 Freightliner FL70 with a CAT 3126 engine. It has two fault codes stored. 91 and 5. Is this a serious issue. I cannot start the truck right now as I am waiting for a new injector pressure… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
1997 Freightliner FL70 with 3126 Cat Engine and Automatic
1997 Freightliner FL70 with 3126 Cat Engine and Automatic Transmission.The Water\Oil light is coming on intermittently along with a buzzer. Can someone help me trouble shoot this? I don't want to arbi… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
98 fl70 with cat motor. Doesn't crank below 32 deg. Replaced
98 fl70 with cat motor. Doesn't crank below 32 deg. Replaced starter and solenoid with no change. Is there another electric relay or could it be the ign. Switch?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Cat 3126 with 10 speed automatic. Good combo in a FL-70 with
Cat 3126 with 10 speed automatic. Good combo in a FL-70 with a 12' Toter home body? will be pulling a 36' fifth wheel trailer weighing about 15k behind it. Heading from east coast to yellowstone, down… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 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
10,344 satisfied customers
I AM TRYING TO FIND A WIRING HARNESS FOR 2001 FREIGHTLINER
I AM TRYING TO FIND A WIRING HARNESS FOR 2001 FREIGHTLINER FL70 VIN. NO. IS 1FV6HJBBX1HG77185. THE FREIGHTLINER wiring harness no. is A06-33563-002. I cannot seem to find a new or good used one.I am w… read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
627 satisfied customers
I have a FL70 3126 Cat. Problem started out to be a surge at
I have a FL70 3126 Cat. Problem started out to be a surge at road speed ( goes off power and comes on strong). WOT seems ok. Now it will surge and if I stop on an exit ramp, idle surge is bad and stal… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

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Owner at DJ Wilson

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I am ASE Master Truck Certified.

Wayne

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worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

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cumminsdr

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Chris (aka-Moose)

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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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