MAP and TPS sensor... - Pirate4x4.Com : 4x4 and Off-Road Forum

wiggamoe · 03-31-2006, 01:27 PM

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.

Landchipper · 03-31-2006, 03:09 PM

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.

wiggamoe · 03-31-2006, 07:52 PM

Thanks Landchipper.
I replaced the O2 sensor and nothing helped.
I'll buy a MAP sensor tomorrow and see what it does.

03-31-2006, 01:27 PM	#1 (permalink)
wiggamoe Registered User Join Date: Jul 2004 Member # 33498 Location: Indianapolis, IN Posts: 680	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.

03-31-2006, 03:09 PM	#2 (permalink)
Landchipper Registered User Join Date: Dec 2004 Member # 39685 Location: Tennessee Posts: 7	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. __________________ [FONT=Franklin Gothic Medium]KLG[/FONT]

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03-31-2006, 07:52 PM	#3 (permalink)
wiggamoe Registered User Join Date: Jul 2004 Member # 33498 Location: Indianapolis, IN Posts: 680	Thanks Landchipper. I replaced the O2 sensor and nothing helped. I'll buy a MAP sensor tomorrow and see what it does.