1991 vw polo station wagon

vw polo · 12-11-2008, 08:00 AM

Hi,
Could you please give advice? my polo has been having problems starting and engine is stalling badly and unable to go over 1000rpm's, have changed mass air flow & engine speed sensors ,every time a new sensor is installed or corrected the problem ,another problem arises after a new sensor was installed?My mechanic thinks maybe the main pc onboard the car is faulty,any advice?
stan

**SABL** · 12-11-2008, 10:12 AM

Many things can cause the symptoms your Polo is showing..... the onboard puter is one of them but pricey...... $300USD. Check with good parts supplier and see if they can test your onboard puter.

**carsey** · 12-11-2008, 10:24 AM

Im not sure if your car will have a OBD2 or Vag-com prot, but if it does get it hooked up and see if there are any fault codes.

**SABL** · 12-11-2008, 10:38 AM

Hi carsey!!

I think the '91's are too early for the OBDII and are manufacturer specific with the OBDI, unless you want to pay $350USD for the adapter harnesses.

I agree with getting the car hooked up for diagnostics..... just too many controls/sensors that can go wrong and guessing only costs time and money. I have the time but I am well short on cash.

**carsey** · 12-11-2008, 10:42 AM

Just another option, have you tried looking at the throttle body/carbreteur (sp?) Make sure that it is opening properly and it is free from any dirt.

**SABL** · 12-11-2008, 11:02 AM

No fair carsey..... you are british and always spell things different

Here in the colonies we spell it carburetor. If you were French I would not be surprised to find 'eur" as the ending of the word and being British I can see your spelling of the word with 'our'. The American forefathers were on a shoestring budget and dropped the "u" in many words due to the cost of ink..... I think.

Good point on the TB or injector/s....

I was wondering if the engine was straining to reach any kind of RPM and that is not good.

12-11-2008, 08:00 AM	#1 (permalink)
vw polo Registered User Join Date: Dec 2008 Posts: 1 OS: xp	1991 vw polo station wagon Hi, Could you please give advice? my polo has been having problems starting and engine is stalling badly and unable to go over 1000rpm's, have changed mass air flow & engine speed sensors ,every time a new sensor is installed or corrected the problem ,another problem arises after a new sensor was installed?My mechanic thinks maybe the main pc onboard the car is faulty,any advice? stan

12-11-2008, 10:12 AM	#2 (permalink)
SABL Moderator Relaxation Room Join Date: Jul 2008 Location: Galena, Ohio Posts: 1,178 OS: WinXP SP3	Re: 1991 vw polo station wagon Many things can cause the symptoms your Polo is showing..... the onboard puter is one of them but pricey...... $300USD. Check with good parts supplier and see if they can test your onboard puter.

12-11-2008, 10:24 AM	#3 (permalink)
carsey Moderator, TSF Articles Join Date: Aug 2006 Location: Hunwick, Co. Durham England Posts: 10,678 OS: XP Pro SP3 My System	Re: 1991 vw polo station wagon Im not sure if your car will have a OBD2 or Vag-com prot, but if it does get it hooked up and see if there are any fault codes. __________________ Submit New Articles Here

12-11-2008, 10:38 AM	#4 (permalink)
SABL Moderator Relaxation Room Join Date: Jul 2008 Location: Galena, Ohio Posts: 1,178 OS: WinXP SP3	Re: 1991 vw polo station wagon Hi carsey!! I think the '91's are too early for the OBDII and are manufacturer specific with the OBDI, unless you want to pay $350USD for the adapter harnesses. I agree with getting the car hooked up for diagnostics..... just too many controls/sensors that can go wrong and guessing only costs time and money. I have the time but I am well short on cash.

12-11-2008, 10:42 AM	#5 (permalink)
carsey Moderator, TSF Articles Join Date: Aug 2006 Location: Hunwick, Co. Durham England Posts: 10,678 OS: XP Pro SP3 My System	Re: 1991 vw polo station wagon Just another option, have you tried looking at the throttle body/carbreteur (sp?) Make sure that it is opening properly and it is free from any dirt. __________________ Submit New Articles Here

12-11-2008, 11:02 AM	#6 (permalink)
SABL Moderator Relaxation Room Join Date: Jul 2008 Location: Galena, Ohio Posts: 1,178 OS: WinXP SP3	Re: 1991 vw polo station wagon No fair carsey..... you are british and always spell things different Here in the colonies we spell it carburetor. If you were French I would not be surprised to find 'eur" as the ending of the word and being British I can see your spelling of the word with 'our'. The American forefathers were on a shoestring budget and dropped the "u" in many words due to the cost of ink..... I think. Good point on the TB or injector/s.... I was wondering if the engine was straining to reach any kind of RPM and that is not good.