92 2.5 engine problems - Jeep Wrangler Forum

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Old 03-22-2014, 03:02 PM   #1
Join Date: Mar 2014
Posts: 14
92 2.5 engine problems

hi just joined the forum today. need help diagnosing 92 2.5 running rough.
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Old 03-22-2014, 03:21 PM   #2
Join Date: Mar 2014
Posts: 14
engine misfires. will idle okay but then sputter. pop and backfires occasionely. replaced plugs, dist. cap, wires, fuel filter,and fuel pump. checked for vacuum leaks. any ideas?
92 2.5 have 35 psi gas pressure. regulator seems to be working. dash codes are
33 ac clutch relay
21 ox. sensor
17 engine running too cool.
thinking maybe weak ignition coil???

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Old 03-22-2014, 03:28 PM   #3
Beer Belly's Avatar
Join Date: Jan 2014
Location: Earth...near the Moon
Posts: 457
Could be the fact that it is a Jeep!

Don't know if '92 has a map sensor or not, but if it does check that. Coolant temp sensor also.
1989 Yeah it's a Junker, 100% paid for.
Powered by a massive 117 HP, fuel injected, 150 c.i. AMC 4 cyl. powerhouse.
Scratches, dents & minimal rust.
No radio, speakers or antenna, but has heat, lights & wipers.
Always starts and stops.
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Old 03-22-2014, 03:31 PM   #4
Join Date: Mar 2014
Posts: 14
i'll check them. thnx
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Old 03-23-2014, 02:46 AM   #5
ctlucas93's Avatar
Join Date: May 2010
Location: Alabama
Posts: 49
Oxygen sensor will definately make it run like that, for the too cool code thermostat could be stuck open, other codes are normal.
1993 Jeep Wrangler 2.5
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