Question about 1987 Volkswagen Jetta
Car only start when accelerator pedal is fully pressed and struggles to idle
There is no idle speed control vale if it is Bosch mono motronic. idle speed is controlled by throttle actuator, ( electric motor) that is on the left hand side of the throttle body.
Posted on Nov 21, 2013
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Posted on Jan 02, 2017
when you last time changed your labda sond also the sensors on fuel intake system can resolve that
in most cases is lambda sonda problem
Posted on Nov 30, 2008
Hello, VW polos 1.0, 1.4. 1.6, suffer from carbon bulid up in the throttle bodys causing bad idling, esp the Bosch Mono-Motronic (Throttle Body Injection systems), a good clean with carb cleaner should repair the problem, also engine temp sensor replacement and idle speed control valve replacement can help idle problems.
Posted on Apr 19, 2009
SOURCE: vw polo car wont start
try disconecting the coolant temp sensor and then try, it may be faulty, also check the hall sender unit in the distributor, if it has one, the centre pin should be the signal wire if no pulse is present the sensor is faulty
Posted on Jan 16, 2009
You will probably find it is a problem with the switch on the brake pedal.
Get your self a cheap multi meter from an electronics store. Set it to meaure ohms. This is used to check if a connection is complete.
Take the wires off the switch on the brake pedal and test if the connection is open or closed. Push the pedal and check the connection again.
If the switch only had one wire then the negative connection is made to the body of the car. Put one probe of the volt against bare metal of the body somewhere and the other agains the terminal of the switch and test again.
This should tell you if the switch is broken. if the switch is good then you probably have a short circut somewhere between the brake lights and the switch. That is something has pinched or other wise broken the wire and it is touching metal of the car. You will have to follow the wires as best you can and look for damage.
Hope this helps
Posted on Sep 25, 2009
SOURCE: VW Polo Immobiliser P Reg
I have the same problem with immobiliser in a 2007 golf, i have yet to figure out the problem:
Immobiliser will not allow me to sart the car but, if I let it Cool off , sometime sit between 5-120 min. it will start. i have tried succesfully the disconnect the battery for 30 min.
- it not the battery, given boost and no result
- it's not the alternator, it been tested
- Starters are effected by Temperature, i think it's the starter.
let me know what you guys think
Posted on Apr 08, 2010
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