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2.5L Help please


 
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blktrax
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Joined: 01 May 2007

PostPosted: Fri Sep 07, 2007 11:56 am    Post subject: 2.5L Help please Reply with quote

1997 TJ 2.5L

Ok second try; thinking caps on... ready... go...

For somereason on cold start, sitting overnight, the 2.5L starts up perfectly first crank every time. A/C on or off makes no diffrence.
As soon as I touch the gas it stumbles. If I continue to press it rev's nicely and sounds normal.

Imeadiatly if I lift the clutch it starts to stumble and die. I can rev it and get it to go, but as soon as shift to 2nd and the rev drop below 2000 it stumbles really bad. Then picks up and runs fine.

I can drive it 2 minutes shut it down and fire it back up or run a whole tank of fuel through it and it will absolutly never happen again untill it sits for more than 12 hours.

Parts replaced:
Both O2 Sensors
TPS Sensor
Idle Air Control
Air filter
Fuel filter - in tank
Sending unit lock ring
Gas cap

I thought about fuel pressure test, but when it stumbles its smelling rich. But I cant seem to find anyhting wrong with the EVAP system, Nor is it throwing any codes. None stored none posted. It will pass an emissions test.

Thoughts suggestions directions?
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ThePhantum
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Pissed-Off Admin


Joined: 23 Jan 2004
Location: I knew it...I'm surrounded by Assholes!

PostPosted: Sun Sep 09, 2007 2:21 pm    Post subject: Reply with quote

Sounds like a classic CPS problem to me...
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97 XJ Sport with a bunch of stuff
Quote:
Never argue with idiots, they drag you down to their level and beat you with experience
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blktrax
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Joined: 01 May 2007

PostPosted: Tue Sep 11, 2007 7:17 am    Post subject: Reply with quote

Alrighty, well guess i'll try that, instead of the map first.
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