Check Engine Light

[shamoo]

Check engine is on and stays on, thought i had it fixed. Had it read at a garage and they said it was a cylinder 1 misfire. Changed the plugs and checked them and found a chunk taken out of #1 electrode. Replaced all plugs, and plug wires and rotor, dist. cap. Check Engine light returned. Runs rough at idle. 140,000 miles on engine. maintence done regularly. Injection  cleaner put in tank.


What next ? Anyone have any suggestions??

98 TJ 4.0L  Manual, no air


Jon

[Project92YJ]

reset the ecu by disconecting the - battery cable for about 5 min.

[shamoo]

did that tonight we"ll see what happens in the am. Left the cable off while replacing the cap and rotor It all needed changed anyway had about 60,000 on them

[keegan]

go up to oreilys and have them check it again...

[shamoo]

Light came on this am going to work
Injectors maybe?
 going to run a compression test then go from there