MyTalonTSi1991
Proven Member
- 48
- 28
- Jul 12, 2019
-
Bloomington,
Illinois
I have a full stock configuration 91 TSI FWD Automatic.
Car has been running absolutely perfect and it randomly in the last month or so has started sputtering at idle and stalling.
Most of the time it drives fine with no issues but sometimes it gets very unhappy and refuses to idle. Yesterday it stalled and had a hard time starting, had to give it part throttle to get going and the tach was kind of jumping around which it never did and it took me a good probably 5-10 minutes of this to get it to stay running and idle on its own. Got it running and proceeded to drive it back to my garage and it drove just fine. It did this a couple weeks ago, originally suspected bad gas so when the tank neared empty I put in a bottle of Lucas and fresh 93 ethanol free fuel. At that time since I had some spare parts on hand, I replaced the plugs, wires and Idle motor, idle is about 750 warm when in drive, if I turn on the AC it dips to about 600. I am kind of at a loss here.
The only "mod" on the car is a Walbro 255 fuel pump since when the original one went I had a hard time sourcing an OE spec one. Could it be my ECU? Coil? Bad plug wires? This one has me really scratching my head since this car has performed flawlessly up until this.
Car has been running absolutely perfect and it randomly in the last month or so has started sputtering at idle and stalling.
Most of the time it drives fine with no issues but sometimes it gets very unhappy and refuses to idle. Yesterday it stalled and had a hard time starting, had to give it part throttle to get going and the tach was kind of jumping around which it never did and it took me a good probably 5-10 minutes of this to get it to stay running and idle on its own. Got it running and proceeded to drive it back to my garage and it drove just fine. It did this a couple weeks ago, originally suspected bad gas so when the tank neared empty I put in a bottle of Lucas and fresh 93 ethanol free fuel. At that time since I had some spare parts on hand, I replaced the plugs, wires and Idle motor, idle is about 750 warm when in drive, if I turn on the AC it dips to about 600. I am kind of at a loss here.
The only "mod" on the car is a Walbro 255 fuel pump since when the original one went I had a hard time sourcing an OE spec one. Could it be my ECU? Coil? Bad plug wires? This one has me really scratching my head since this car has performed flawlessly up until this.
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