Hi, is there a so called fule switch of switch on a Corvette c4 yr 1988? If so where is it? I have fule pump issues, jus change the pump. But storting issues Answers appreciated Regards, Ron N

Question edited for clarity and moved to the special category for Chevy Corvette. I can recommend the Corvette Forum website.
https://www.corvetteforums.com/forum/corvette-c4-forum-14/fuel-pump-relay-7540/

There are two according to this

https://www.justanswer.com/chevy/9zql2-1992-chevy-corvette-fuel-pump-relay-located.html

More information, images and videos

https://www.google.com/search?q=1994+Chevy+Corvette+Convertible.+Fuel+pump+relay+location

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https://www.corvetteforum.com/forums/c4-tech-performance/3059317-89-fuel-pump-relay-and-fuse-problem.html

In a nutshell, you disconnect everything attached to it and slide it out the passenger side between the subframe and frame. Obviously, you have to disconnect all of the fluid lines, the tie rod ends on both sides, and the 2 (or 3) bolts that holds it in the car, along with the steering shaft.

Edward,

C4 Corvettes have an Outside Air Temperature sensor which may be faulty. It senses air temp in front of the car and tells the climate control unit (which controls the heat/ac) what the temp outside is. Yours is in front of the grill. It's a $20 part. It looks like the attached link. I'm not sure if this is your issue, but it was on my son's car. I just thought it might give you a direction to check.

Fred-
C4 Corvette 1986 1989 Outside Air Temperature Sensor

Hi John.
go to this link and see if its what you are after.
diagram for power window circuit 1988 corvette Google Search

The fuse block is located under the right side of the dash. Check the fuse called "INST LPS" fuse # 15, it's the one located in the 5th row across and 3rd one down. If the fuse is good, with the ignition in the on position check for 12 volts at the dimmer switch assembly this is a dark green wire. If you have 12 volts replace the dimmer switch assembly, if not repair the dark green wire. Hope this is helpful to you.

If I'm understanding you correctly sounds like dimmer switch is defetive or there is an open in the circuit. remove dimmer switch from circuit and use a set of jumper wires and jump the circuit connector and see what happens .If light come on when switch is bypassed the switch was the culprit . If not then your into surgery. Gonna need repair manual and do exactly what it says to hunt for the open, lose wire etc.

you mite check your turn signal lever some push some if you pull it toward you. hope this helps

Helm .Com

Have to buy it

That is the factory one I
would get

cheek youre plugs and plug wires four the miss firing depinding if the car spudder before it died could be fule problem cheek the fule pump fule injectors and fule filter if its carb make sher its set rite <is it still turn over or complety ded win you put the key in