NA S5 stalling at idle after warm up
#1
New to the Club!
Thread Starter
NA S5 stalling at idle after warm up
I have an NA S5 and it keeps surging idle between 700-300 until it stalls and dies after getting up to temp. Had to replace water pump+ Rad after found puke looking stuff in coolant. Flushed system and now after that it keeps dying after given throttle once warmed up. Just a tap and the car will go from a solid steady 1200-700 rpms to surging at 200 rpm at it’s lowest up to 700 before eventually stalling out. I had only driven the car once after I got it running for the first time after replacing Rad/WP And it misfired under load @ 3-4k rpm, turned out to be a coil pack not plugged in 100%. Plugged coil pack back in and car sounds more smooth (as smooth as it can w a shitty welded rattling exhaust) but haven’t been able to test drive underload since it keeps dying at idle and won’t stay running w/o a foot on the throttle after it gets to temp. Car has new spark plugs and a PS delete. What could be causing this issue? I heard having AC on increases load on the engine but I have no working logicon to test this theory, maybe TPS? ACV? ECU? (Stock ecu)
Thread
Thread Starter
Forum
Replies
Last Post
rogan
2nd Generation Specific (1986-1992)
3
03-18-15 03:34 PM
bac22
2nd Generation Specific (1986-1992)
7
06-03-11 12:59 PM
infinitezero
2nd Generation Specific (1986-1992)
1
12-07-03 01:03 PM