goneboating06
NAXJA Forum User
- Location
- St. George Utah
So lately my jeep is struggling with life. I have a 89 4.0L and lately sometimes when i go out and start it, it will start and rev up to a little under 1,000 rpm, then drop back down to 200 fast, and then work its way up to 750-800ish.... usually it will start and then rev up to 1800 and drop down to 1,000 and then gradually down to 800. Sometimes it will work normal... and sometimes it has issues. My jeep doesn't idle very well... at all.. its very jumpy and it misses. And its been that way for a while. The jeep idles much better when its warm, but its still pretty jumpy with the occasional miss. My TPS is adjusted to .085ish volts. I have new injectors. I have a brand new CPS, IAC, and Knock sensor. My gas milage sucks too... My O2 sensor was replaced just before i bought it in 2009. Please help.