I have a 1993 golf 1.8 non turbo. when i hold my foot on the pedal it will rev high then almost die then catch aging and rev then die and so on... can any help me with what could be wrong.

 

Your problem is a vaccum leak at the valve cover. There is a pressure regulator that goes from the cover back into the throttle body. Check the little piece that sits in the valve cover, it's most likely cracked, you can just pull off the pressure regulator, which looks like a mushroom, do it carefully. See if there is a crack in the little rubber stopper. If it is cracked, you can buy a new one at a dealer. They are very cheap, it might also be the hose from the regulator to the throttle body which is a little more expensive. The rubber never lasts long and dont' both getting it used or you'll end up replacing it in a couple of months. Buy new. Be careful when you remove the stopper from the cover so you don't drop any broken pieces of rubber in there.

-Jeff

 

sounds like it is just simply runing to rich or to lean....

tony

 

I would agree it sounds like a vacuum leakage issue - I assume brake pedal?? - if thats the case check the lines going to the brake booster and the check valve

 

I agree with Jeff, if you're your throttle is not responding, sounds like vacuum

 

i changed the throtle body and its fine i think it was the mass airflow inside the t/b thnx for the tips

 

air by pass adjusting valve on the throttle boddy just befor the throttle valve may be cloged sounds like it is choking out check air filter and stuff