Stalling

[JulianHJ]

Last weekend in heavy London traffic my Griff kept stalling. The engine was running around 100C, and the RPM waivered each time I came to a standstill before dropping off and stalling. I put it down to overheating and the stop/start traffic conditions. Driving back the next day through lighter traffic all was fine.

This evening a similar thing occured, but whilst running at the normal 90C in free flowing traffic. At one point it cut out whilst I was doing around 30MPH.

Any similar problems or troubleshooting suggestions?

[shpub]

Try cleaning the stepper motor.

Steve
www.tvrbooks.co.uk

[powelly]

Obviously time to buy 'the book'... what's a 'stepper motor'?

[simont]

I've had a very simialr problem, turned out to be one of the two relays on the loom next to the ECU, don't know which one as I relapced both
Simon

[Heliox]

This happened on my last Griff, the engine would just cut out without warning it happened a couple of times while overtaking! and turned out to be the inversion switch which is located behind the glove box.It knocks off the fuel system if the car should roll over.I replaced the switch with a new one and the problem disapeared,hope this might be of help

[shpub]

quote:
Obviously time to buy 'the book'... what's a 'stepper motor'?

Its a special motor that moves a valve that controls the amount of air that bypasses the throttle to maintain idle speeds. Controlled by the ECU. Very prone to gunging up especially if the car has been in heavy traffic. Located at the back of the plenum. 10 minute kob to undo connector, remove and clean. Cures all sorts of stalling, bad running faults.

Steve
www.tvrbooks.co.uk

[powelly]

Thanks Steve..

[JulianHJ]

OK Steve, you've won me over, I'll order the book.

[CK Griff 500]

Same problem every now and again, buying thge book has got to be cheaper than anyones labour rates, might even convince the wife that the Griff is reliable, might even get to take her out (the car that is)

[powelly]

OK, my babe is back to normal, fault diagnosed as the 'base idle requiring a reset'... didn't think TVR's had computers!!!!!

Ahhh... all is well again...