first off just wanna say hello!!! i have a 1990 gti 1.8 8v that i am having some issues with having some issues with it sputtering and not idleing well when the car is warm! when u first start the car it seems ok and gets worse it seems as the temp goes up on it it also reads on the guages that it is overheating when it is not ( could be a bad black cts or something will be replacing it soon) when i unplug the blue cts it the car dies if that helps any !but i am trying to get the car running well and just could use some guidance here once again thanks a ton ! \ thanks a ton
Replace the blue and black temp sensors. They don’t cost much and will be the first thing you should try. If you still have issues after that there are a few other things you can try but you need to eliminate the potential of a temp sensor issue first. That’s how I would approach it anyway.
You really need to check the ignition timing is correct too. Look for the famous Rubjonnys guide to setting up your Digifant.
something i am thinking about could it be a bad o2 sensor (since it doesnt use the sensor until its up at temp) if so where is the plug to unplug it and see if that help and where are they located???
Stuttering under load | Club GTI - another 8V not behaving plus mine... I think Tristan is on the money re: o2 sensor, to the best of knowledge the Mk2's didn't have them or at least any of the 3 I had didn't have them.
also went to pull the air box today to look around and noticed there is fuel in the intake boot and the air filter has a gas smell (i have never replaced any of that go the car a week ago) would that be from it running poor at temp ? or could that help indicate an issue??
Unless you have absolute proof of a proper Service being undertaken-I would start with all of that coupled with checking the mixture as Tristan said above. At a minimum check/replace the following: Distributor Cap Rotor Arm Spark Plugs Fuel filter Air filter If there is a stink of fuel around the air filter then the car needs a good tune-up in conjunction with the above
for sure we found a o2 sensor and unpluged it seemed to make it run the same if not slightly better ?? (i live in the us if that answers anything with the having a cat and 02 and the car is a 1990 so that would mean digifant2??? but we did find that the reason its starts better in the morning is that it has all night to drain the fuel that is in it into the airbox and drain out? so now is more of a question of "why is my car running so rich?????"
Check the ecu plug for corrosion, does the plastic cover of the Digifant unit look like it has been opened, is your fuel pressure regulator working ok, is your fuel return line free from blockage, are the injectors original or upgraded, has the car any modifications, such as a "chip" in the ecu...
Yea I am in the u.s. messed with it more today will upload some vids of it doing what its doing ( you can see fuel coming into the throttle body when the car is off) but eventulally it stops which why it starts up after sitting over night ( ill post a vid to you tube and link it here )
