[Mk2] [NA] Almost cutting out when stopping

[mister two]

Help with this please

Doesn't happen all the time only now and then. When I stop at a junction or pull over the car starts bogging down and almost cuts out. Even with the clutch down.

Last time it happened I had been driving all day and stopped the car several times with no issues. It happened when I got home after a motorway journey.

During normal driving its perfect

I've read about turbos losing power during driving but mine is an na and it's never while driving only when I come to a halt. Searched but I've not come across this situation

Suggestions?

[SonicSW20]

What revision? Check for air leaks / vac leaks.

[mister two]

Sorry Rev 4 1997

[Driftlimits Performance]

Iscv+Tps need cleaning/calibrating.

[mister two]

Thanks

[jimGTS]

personally wouldnt touch the tps, but the idle control valve may be dirty, causing the flapper to not open on idle conditions. hence stalling.

worth a try anyways for a couple of hours of your time to remove and clean it.

[SonicSW20]

Worth checking the calibration of the TPS against BGB spec anyway, takes 5 minutes and is free to do. The TPS's can fail

[Driftlimits Performance]

I don't think I've ever seen one fail! And if you've got it off the car and are doing the job properly,then of course check the tps!

[SonicSW20]

I have a failed one in my lockup! Seems to calibrate OK, but car just didn't run right with it on there. Is fine with another TPS.