Cylinder misfires after start with good fuel pressure are generally spark delivery problems, though it could also be airflow. Follow the manual...plugs and wires are the next route.
Your TB isn't sticking, is it? Another possibility....crankshaft position sensor seems to be a common failure point in LH series vehicles, and it would cause this condition (so could camshaft position sensor, though it is less prone to failure). CKP sensor failure is usually indicated by the "cruise" light flashing during misfire. One final thing to check is timing...if the belt jumped a tooth it would cause rough idle and multiple misfires. The O2 sensor code is probably coming up due to the misfires. It would not be a factor in starting or idle while in open-loop mode. Cheers. -DP -----Original Message----- From: Jack Rabon [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 29, 2004 2:48 PM To: '[email protected]' Subject: [dodge_intrepid] Fail to Start Unusual problem with my 1995 3.5, which ran fine yesterday, then failed to start this morning. Fuel pump runs during the start attempt, and you can smell fuel at the exhaust. Only an occasional cylinder fires, enough to take the rpm above the starter speed, but it does not run. FSM says 48 psi fuel pressure with no vacuum on the regulator, like when it will not start. We measure 50 psi, so there should be enough to at least idle. Key dance gives 12, 21, 55. Oxygen sensor, plus the usual. O2 sensor should not be a factor on a cold start, right? The PCM should be using a table to set fuel flow. FSM says next step is coil or plug wires. So I guess it is time for new wires, and borrow a coil to test that. Anyone have similar problems? Anything else to check? Thanks, Jack ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Autos. Everything you need to know about buying or selling a car. FREE Quotes, 360� Tours, Research, Blue Book, Compare Vehicles, Buy Used http://us.click.yahoo.com/kEZsdA/bwnGAA/YiGOAA/46t0lB/TM --------------------------------------------------------------------~-> Web: <http://groups.yahoo.com/group/dodge_intrepid> Subscribe: <mailto://[EMAIL PROTECTED]> Unsubscribe: <mailto://[EMAIL PROTECTED]> Moderator: <mailto://[EMAIL PROTECTED]> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dodge_intrepid/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
