94 wrangler:rough idle, now no spark
I have a 94 yj 4 cylinder and in the begining of my problems it was having a rough idle and I would have to give it gas until it warmed up but after it warmed up it would cut off and then would not start back up right away. The codes that it put out were: 12, 33, 23, 24. I have replaced or checked the following: o2 sensor, fuel pressure regulator, map sesnor, mat sensor, throttle position sensor. Not sure what to check out next, thinking the crankshaft sensor or the ecm. Thanks for the help.
First the basic no start question: Does the fuel pump cycle on and then off when you turn the ignition key to on? When you say you checked, what did you replace and what did you check and how? Do a battery disconnect for a minute(10 seconds is usually long enough but just to make sure) and then try to start it again. Recheck the fault codes. If you had a rough idle but it ran fine after it warmed up it is usually 1 of 2 sensors; the TPS or the engine temp sensor in the front of the block near the thermostat.
Originally Posted by mattice View Post
|no spark , rough idle|
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