Thank you very much jlevie, all the help is really appreciated.
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Update: Got the correct temperature sensor, problem is still happening. Beginning to think that I missed something with the TPS. Noticed that if I go WOT until it starts to lean out, and then back off a hair on the throttle, AFRs come back into an acceptable range. I assume that by letting off a tiny bit, the ECU is going back into cruise mode even though it is still accelerating hard. So, is it time to look for a new TPS?Comment
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Use an ohmmeter or test light to see if the WOT switch in the TPS is operating as it should.The car makes it possible, but the driver makes it happen.
Jim Levie, Huntsville, ALComment
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what wide bandare you using and how old is it. they go bad as well the ethanol kills them. borrow a friends or do a back to back coparison with a fresh one. or make a pull then check the plugs they arent gonna lie to you and if your unsure then post a pickComment
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coolant temp plays a big roll on air fuels they can either make it go dead rich or lean but since that is replace did you cap the crankcase vent at the intake mani? how old is the afm?Comment
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Even if my wide band (a innovative LM-1) isnt reading the correct AFR, the fact remains is that it leans out 3 points from where it is under WOT. I mean, when you let off the gas and the car pulls HARDER than it does under WOT, you know something is amiss.
The afm is from 89...dunno if there is such thing as a "new" afm anymore.
oh, and the crankcase is venting to a oil catch can. Not to the intake manifold. Doesnt matter though, because the same thing was happening with the oil catch and without.Comment
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you can buy a new afm still but there 400 compared to buying one thats a referb for 130 you pull the plugs and have a look yet.Comment
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Update: picking up a new TPS and rebuilt 19lb injectors on monday. Lets hope this helps!!Comment
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