Have a saff 4x4 '90.When its at running temp everythings mint,however starting from cold, car will occasionally rev by itself, it spikes straight to 2k sits there for a second, then drops back to idle.Also when driving car cold it hesitates, as if my discs are warped badly and catching(this has been checked and is not the case).
I have changed some parts, ie leads,d/cp,r/arm,coil.Have also eliminated TPS, all of this makes the car a whole lot better......but only when its warmed up. Any suggestions much appreciated, been driving me nuts for months now

 

could be the 3 block plugs, on the bulkhead, i had the same prob. took them apart, cleaned them, did the trick

 

Will try this eve m8, cheers

 

no joy

 

could be an air leak somewhere any air pipes on the inlet side

 

i have same prob!!!!

 

get your co2 checked if ur running lean then car will fluctuate at idle until warm when the idle valve wont be needed as much

 

All fuel is spot on, was set up recently, convinced its a problem elsewhere, been advised that coolant sensor may be dicky, so gonna try this next, fingers crossed

 

were the fook is that?

 

Its on the head, pass side, but is not to be confused with the temp sender for dash.Apparently its further back.Gonna av a prod round 2 moz.Had enuff of the thing for tonite!....will post results

 

more confused !!

has any one got pics for "the idiots guide to"

lol

 

Not had a look yet m8, so cant tell where exactly it is

 

fooking cars !!!!!!!!!!!!

wanted: 1 bicycle-must have front and rear lights
will p/x cossie WHY?

lol

 

Cossie shaped house extentions..........................wonder if they will catch on, beats a conservatory!!

 

 

Steve, it's a blue sensor just to the left of the coolant hose, that comes of the back of the head going to the oil cooler, behind/round about the dipstick.

Bit of a bitch to get to... but defo sounds like your problem.

HTH
Iain