Engine problem, MK IV Polo (1996) assistance.....

weefatbob · Post by **weefatbob** » Thu Mar 16, 2006 7:01 pm

Hi
I have a 1996 (P) Polo, which has had an engine problem since I got it. For no apparent reason the revs keep firing up and going to between 2-3000. They also dip now and again as if the car is going to stall.

I have had all electrodes tested and changed and I have also changed the petrol inlet valve. All have been re-calculated by computer. It still happens.

Anyone else had this problem, and can advise me as how to correct it, am at my wits end!!!!

Cheers.

DScape · Post by **DScape** » Thu Mar 16, 2006 8:22 pm

Disconnect the battery for a while to reset the ECU.

No hope? ....

....Replace temperature sensor

Still no?...

....the VERY last option is the throttle body.

I think that's the usual route by the looks of things on MK4s. Somewhere in between is the carb cleaner, and a Vag Com reprogram or something....Im not too sure with that one. Depends on how dirty your throttle body is, have a gander to see if its completely black or not.

I'm no expert though mate, I'm just going by what I read on these boards. Do a search for "idle problem" or something, its a common fault.

warrmr · Post by **warrmr** » Thu Mar 16, 2006 8:22 pm

the revs on my car dips when i put high electrical strain on it. i have a hotshot washer fluid heating system when i turn that on the revs drop then the engine management increases them to normal.

your prob could be a dirty throtle body. goto halfords and buy yourself some carb cleaner. take your airbox off start the engine and spray carb cleaner directly onto the throtle butterfly while reving the engine.

there was a guide around here somewhere.

might be in the common problems thread.

damn 1 seccond to late/.

DScape · Post by **DScape** » Thu Mar 16, 2006 8:24 pm

warrmr wrote:damn 1 seccond to late/.

I wouldn't trust what I say though

Someone will come along say that I'm totally wrong in a min...

weefatbob · Post by **weefatbob** » Fri Mar 17, 2006 2:28 pm

Thanks Guys

Done the Carb cleaner, replace temp switch replaced the throttle body as well, still happening tho Also fitted new battery as well.

DScape · Post by **DScape** » Fri Mar 17, 2006 5:58 pm

weefatbob wrote:Thanks Guys

Done the Carb cleaner, replace temp switch replaced the throttle body as well, still happening tho Also fitted new battery as well.

Jesus! Someone help this guy!

Good luck mate, hopefully someone will have some more ideas. Sounds like you're having a bad time with it!

olop_chris · Post by **olop_chris** » Sat Mar 18, 2006 12:27 am

DScape....am i mistaken or did i see your car parked in ASDA car park in spondon tonight (friday night)

DScape · Post by **DScape** » Sat Mar 18, 2006 1:27 pm

olop_chris wrote:DScape....am i mistaken or did i see your car parked in ASDA car park in spondon tonight (friday night)

No dude, you are not mistaken that would of been me!

Where abouts you from in Derby mate?

olop_chris · Post by **olop_chris** » Sat Mar 18, 2006 2:44 pm

ah cool, thought i recognised your car! im from west hallam, ilkeston

yourself?