Engine suddenly runs like crap & stalls out

[Kai]

Drove to the store earlier, and it was fine, get shopping, come back to the car, disarm the alarm. Car wouldnt start, tripped the alarm. Checked EFI fuse, was fine - no codes being thrown. Engine finally started after a jump start.

Barely got back - stalled twice when coming to junctions and slowing down, engine would just die. Oil pressure was normal, coolant temp was normal.

What could have caused it to just suddenly do this?

Bad connections? Bad coil pack? TPS out of whack, CPS wiring bollocksed?

Also - i didnt realise that 650rpm idle was normal. Its been previously idling at about 800rpm when warm.

 

[89turbosupra]

I would check the IAC (if you have one) or the CPS wiring.

 

[Kai]

Checked - it was a wiring issue - the coil pack plug to igniter wire was loose by the looks of it. However, bearing in mind its cold outside (4* or so), should there be white exhaust smoke? I say its white, it just looks rather a lot, and it doesnt smell oily, just of petrol.

Before you say BHG - theres no gurgling, coolant loss or a drop in system pressure.

Just excess water in the tailpipe being turned to steam or blown turbo seal?

 

[Kai]

It turned out to be water in the exhaust just turning to steam

Still wish it would idle a little higher though. I'm guessing that adjusting the screw stop might raise it? or is it ECU controlled?

 

[Supra87T]

ecu controlled

 

[Kai]

Bugger. Must have been a wonky sensor causing 800rpm idle

 

[SLO-MK3]

there's an idle ajustment screw on the tb

 

[Kai]

Ah. I'll check out the TSRM later - right now, its nice and warm in bed - and i have american curly fries

 

[bountykilla0118]

dont touch the idle .... the ecu does controls it check for vac leaks how much vac are you pulling at idle?

 

[Kai]

Not a clue dood. That would require more tools than i posess!

Have to wait for his holiness to arrive.

 

[Dirgle]

there's an idle ajustment screw on the tb

It has been discussed before, you do not you that screw to adjust the idle.

 

[mk3 for life!]

i had that same problem and i thought it might be my o2 sensor so i replaced it and while i was under the hood i decided to make sure my timing belt was all lined up and it turned out that my idler pulley bolt backed itself out and my timing was all out of wack, i would go get a new o2 sens. first, it's cheap and worth it, if that fails check timing marks

 

[starscream5000]

Not a clue dood. That would require more tools than i posess!

Have to wait for his holiness to arrive.

Check your boost gauge, it should be all the way down in the negative range at idle, it's best to check with an aftermarket gauge. IIRC you should be pulling around 21 hg/in (or whatever it's called) at idle.