callahan347
TYF Newbie
- Joined
- Aug 15, 2019
- Posts
- 16
- Reaction score
- 3
New to the forum have been going through a lot of older posts and haven't been able to figure out my problem. my wife has a 97 Tahoe with 140000 miles. About a month ago it started showing a random misfire code but couldn't really notice when driving it. Several months prior to this I had installed new plugs wires cap and rotor with no issues. First thing I did was pull the plugs every one looked great. Ran some fuel cleaner through it with no change. Tested the fuel pressure and it was only running at 48 to 50 psi at idle so I replaced the pump. Still had a random misfire and showed eventually showed a crank cam no correlation code. Distributor gear is good and distributor is set properly. Replaced both cam and crank sensor and the correlation code went away but still have a misfire. Pops through the exhaust at idle and idle very rough. Runs well when on the gas to accelerate but at cruising speed starts to misfire again. Does anybody have any ideas what could cause this?