Would this make the Service Engine Soon light come on????

Apr 25th, 2003, 04:08 PM

I have a 99 Frontier SE V-6, automatic transmission, 4x4, with 70000 miles on it. The check engine light came on the first time I pulled my enclosed trailer with approx. 2000 lbs. After unhooking the trailer the light went out. Today I hooked up to the trailer again and Before I even moved the truck the light cameon again.

Here is my thought, the truck did not come equipped with any towing accessories. The guy I purchased it from added a wire harness for a trailer and I put a hitch on it. I'm thinking that maybe the wiring harness is not compadiable with the computer and is sending it some crazy signals that is triggering the service engine soon light.

Let me know what you think, has anyone heard of this happening before.

Thanks,
Flick

2000SE · Apr 25th, 2003, 07:44 PM

Get the ECU scanned and see what the codes are!

Could be a grounding issues or excessively voltage drop because of the extra lighting!.