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92LXNOTCH December 4th, 2013 02:59 PM

2.3 Liter code questions.
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 seems logical to me that would couse a vacume 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 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.

vristang December 4th, 2013 03:15 PM

Battery wouldn't cause issues, until it caused other symptoms...

What is the 'heater valve'?

Best thing to do with the fan is buy a controller with a thermo-switch.

Joel has the best code post I've seen...
DIY KOEO/KOER/Cylinder Balance Self-Test Procedure

92LXNOTCH December 7th, 2013 10:44 PM

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 my tachometer stopped weekend ill be going thru and replacing some things.and having some stuff tested.

fess40 December 10th, 2013 06:34 PM

Sounds like electrical gremlins to me.

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TG4 December 11th, 2013 09:12 PM

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:

vristang December 12th, 2013 01:17 PM


Originally Posted by 92LXNOTCH (Post 6615826)
I have a switch inline on the waterpump that goes into the fire wall. Ive tested it its defently bad.

I can't think of what switch that may be?
Maybe you are looking at a temp sensor?

Any way you can post a pic?

What codes are you getting?

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