My 88 vw fox hesitates and boggs down like its not fetting gas,stalls at stop lights and eventualy wont start up again unless i let it sit foe awhile. I have change the fuel pump, fuel filter and pre filter, and fuel distrabutor, the problem still hasnt been solved. if anyone could help it would greatly apprciated.
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There are several possibilities for this problem. A "cold start" sequence is suppose to activate based on water temperature and the signal from the water temperature sensor. This makes the fuel rich and adjusts timing to make the engine run better when cold. It works like a choke only it is electronic.
There may be 2 sensors with one making the dash gauges work and the other doing the engine controls. If not 2, then 1 sensor would do the whole job.
Another possibility is an air leak in the fuel system which makes the system bleed dry overnight. It is far less common on gas engines but happens a lot on diesels.
Some earlier Ford engines from 1984 to I don't know when they stopped on trucks, would use a step-up solenoid on the accelerator bracket that worked off water temperature. Sometimes a bad water thermostat would make the temperature controls malfunction the other way (High idle, clicking, low idle) that would stall and engine as the temperature vary.
I think that you should check fuses for the gauges. But it might be a bad wire shorting out. I also have seen these cars to blow all the dash lights before. As far as the oil light there is a sensor that goes into the oil pan or the block that may be dirty or shorting out.
These CIS vehicle are tempermental. Best thing to do is change the air filter, clean air flow sensor plate(Spray gunout on a rag and lightly clean it ) Gun out throttle body and a slight idle adjustment. Finallyonce a month put some fuel injection cleaner in the tank. See how this works before we start testing items.
Porbably not getting enough gas or dirty. My 88 dodge caravan did that too until I put a cheap fuel-injector cleaner in with the gas, and started giving it more gas even in lower gears driving around town. Worth a try...