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Old 03-31-2006, 02:27 PM   #1 (permalink)
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MAP and TPS sensor...

I finally got my 95 YJ 2.5L running, but the exhaust is VERY rich. There is carbon caked all over the exhaust ports of the head and through the exhaust pipes. When I run a self diagnostic, the ECU pulls a code (I think it was 23) that Haynes describes as "MAP sensor voltage doesn't agree with TPS sensor voltage"

The engine is running kind rough and idles at around 1100 rpm. I hate to buy both sensors since they're both expensive, any idea on which one it could be? Thanks.
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Old 03-31-2006, 04:09 PM   #2 (permalink)
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My '92 did this same thing and I replaces the TPS first. No change.
I then proceeded to the O2 sensor and the MAP sensor = solved.
I think they all ran in sequence together. This may not be your
situation but it was my experience. Hope it helps.
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Old 03-31-2006, 08:52 PM   #3 (permalink)
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Thanks Landchipper.
I replaced the O2 sensor and nothing helped.
I'll buy a MAP sensor tomorrow and see what it does.
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