ok heres the deal i was given a 1990 rs with a 3.1
t tops and in great shape for an older car
but it will not run well sort of
i can get it to start and move but I have to pump the gas to keep it running or to move.
what might be the problem?
It kinda acts like a carbed motor thats about out of gas you now how you can pump the gas to get it down that last mile to the station when it on fumes.

 

Is the check engine light on? If it is can you get some codes?

 

no thats the funny thing that I forgot to mention the check engine light is not on.

 

also when i got the car the comp was unpluged and the blue cip was out but it and a spare was there so I put the chip in and hooked the comp back up reset every thing and yes I have tryed the other chip also same problem and no light showing. is there a way to see if there is a code thats been givin but the light is just not coming on ( oh the light dose work it is on when you first turn the key on but then turns off soon as it fires)

Thanks again

 

Have you tried the basic plugs, cap, rotor, wire set? Any vacuum leaks? You may also want to check your fuel pressure.

 

nope was planing on doing that today
but I do not know how or where to check the fuel psi. how whould one go about doing that?

 

You can buy a fuel pressure test gauge from your local parts store. They're not that expensive and comes in really handy when working with fuel injection. The test port is located in the back of the upper intake manifold plenum. It has a silver cap that looks like a A/ test post. Don't drop the cap when you unscrew it. Screw on the test gauge onto that test port and key on several times without starting. Should read about 40 psi. How old is the gas in the tank?