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Old 05-27-2003, 16:59   #1 (permalink)
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mad Stalling when slowing down

I have a problem where my car will sometimes stall when I'm coming to a stop. It happens usually when doing about 30 km/h but has happened at up to about 70 km/h. I'm slowing down with my foot off the accellerator and using the gears to slow the car down.
It occasionally has problems at idle where it almost stalls but this isn't very often.

I have had it suggested that the throttle position switch may be faulty.

If anyone has any ideas I'd really appreciate them!!!
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Old 05-27-2003, 17:15   #2 (permalink)
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Yep,

Sounds like the TPS.

Does it have a flatspot, or similar when blipping the throttle from idle just slightly?

TPS should not cost more than $30 and is relatively easy to do.
If its a MPFI EA - ED, use a 'screwdriver bit' and a small (6-8mm) spanner that it will fit into, and you can do it without moving the dizzy, if you get what i mean.


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Old 05-27-2003, 17:22   #3 (permalink)
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Thanks a lot for the reply!!!

I have noticed that it takes a second to kick in if I tap the throttle.
Something else I've noticed is that if I up the revs to by about 250 from idle, hold it there for a second then take my foot off, the revs drop down and the car almost stalls before the revs come back up again. In fact after I take my foot off the throttle from any number of revs and the revs come down the engine dips a bit below idle speed before coming back up - I assume that would be the TPS doing that? Does that further indicate it might be at fault??
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Old 05-27-2003, 17:30   #4 (permalink)
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Try adjusting your idle. I don't think it would be the TPS, most likely the idle is too low.

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Old 05-27-2003, 17:39   #5 (permalink)
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Yeah,
Try sundeeps suggestion first,

Disconnect the wires to ISC, there is a small white 2 pin plug, just seperate it.

Start the car, if it doesnt idle on its own, turn the throttle stop screw 1/2 a turn inwards and try again, and once you have it idleing at around 600 rpm, reconnect the isc.

If the problem still exists, then replace the TPS.

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Old 05-27-2003, 17:40   #6 (permalink)
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the tps can control the idle speed they are linked
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Old 05-27-2003, 19:25   #7 (permalink)
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Check for carbon in idle speed control.
Check tps with multimeter the volts should slowly rise from under1 volt to 5v progresivly as you open throttle..
Leads good ???
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Old 05-27-2003, 19:46   #8 (permalink)
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Tongue

Thank you to everyone for your replies. Any other ideas you have are certainly appreciated! Thanks all!
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