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Discussion Starter #1 (Edited)
I have a 92 Notch.the check engine light is on.I have several questions.the fill tank grommit is garbage and will be replaced.could that couse the check engine light to come on.it seems logical to me that would couse a vacume issue.how do i check for codes and how do i reset them.i disconected the battery for 30 seconds and that did nothing.also the heater valve is blown.thats also getting replaced.Iboughta new battery.The old one was only 540 cranking amps.it now has 640.could the old battery couse the engine light to come on i also replaced the the oil pressure switch.the electric fan in powered by the battery with a on/off switch under the dash.whats the proper way to wire the fan.other then that how do do i check for codes in a 2.3 and make the check engine light go off. It makes me think theres something serious happening but the car runs great.
 

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Discussion Starter #3
Vristang.I have a switch inline on the waterpump that goes into the fire wall. Ive tested it its defently bad..I think it goes to the heater core.Havent had time really to go thru the car.today my tachometer stopped woking.next weekend ill be going thru and replacing some things.and having some stuff tested.
 

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Wlcm 2 costco, I Love You
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The tach is ran by the DIS module, make sure all of the wires are plugged in snuggly at the DIS. Loose wires to the DIS would trip a code, but I believe it would also cause the car to run in LIMP mode.

And the electrical fan issue is sadly common in these cars.

I hope you get those gremlins figured out. :thumb:
 
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