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Old 10-19-2013, 03:05 AM   #1
Join Date: Oct 2013
Posts: 2
running rich 2.5

New to my first Jeep...Story...Jeep was sitting for 1 1/2 years, had no spark...Replaced ICM....Runs rich.... I tested all sensors and they tested ok, one thing was that the fuel injector was stuck so I removed the screen and gently pried up on the shaft inside of injector to free it, I connected a 1.5v battery to it to see if it was moved up and down.
What I was wondering is, could the injector now not be sealing so I am getting to much fuel? The reason it was parked was because the previous owner couldn't get it running....I think that it just needed the ICM, I also replaced the wires, cap,rotor,plugs.

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Old 10-19-2013, 08:09 AM   #2
Join Date: Jan 2013
Posts: 212
Year? Throwing any codes?

1991 YJ 4.0L, K&N air filter, SS headers, 31X10.5, Congo Cage, etc...
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Old 10-19-2013, 01:12 PM   #3
Join Date: Oct 2013
Posts: 2
It is a 1990
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Old 10-20-2013, 03:22 PM   #4
Join Date: Jan 2010
Location: Las Cruces, NM
Posts: 2,291
I would replace the TB injector and also check the fuel pressure, the temp sensor needs checking too, if its faulty it can make the engine run rich...
Also get yourself a manual...
What temp is the engine running at, is there a thermostat in it?
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
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