INSANE IDLE! out of nowhere. Service engine light on. - Ford Powerstroke Diesel Forum
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Old 01-26-2013, 10:37 AM
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Question INSANE IDLE! out of nowhere. Service engine light on.

OK yesterday i took my 99 7.3L f250 4x4 to the car wash, sprayed the motor with that green stuff and rinsed. it just had a little dust that i wanted to get rid of. after i started the truck back up, it had a weird idle for a minute or so then leveled out and drove as good as it always did.

well this morning i go to start it and the idle is FREAKIN CRAZY! like one whole bank wasnt working. i shut it off and wiggled the uvch connections and started the truck back up and it idled fine for about 15 seconds, then it went right back to the crazy idle. my service engine light is ON.

Also, my turn signals stopped working so yesterday i also replaced the flasher behind the dash with no luck, apparently i have to replace the switch in the column. the only other thing i messed with behind the dash is my trailer brake, i disconnected it.

the only thing ive checked is the exhaust manifolds on both sides and theyre both warm!! so both sides were firing at least one or two injectors.

after wiglling those uvch connection wires again it doesnt make much difference if at all.

i did notice water coming out from the bottom of the wheel wells on both sides too. wondering if i shorted out my IDM or something. i went to autozone and got a cheapo scanner and it told me there were no codes but the service engine light was clearly on so.....screw that scanner probably.

If you guys could give me an idea, im ready to rip the valve covers off and do the quarter trick but if its some other possibility i sure would appreciate your input.

Has anyone experienced this?? i just got this truck and dont need problems already.

One more note if its important, i do have a TS 6 pos. chip in there.

thanks in advance guys.
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