I had dim speedometer lights and the tach read approx double. I do not know of an upgraded instrument panel but Gary's Corvettes in Georgetown Texas sells reconditioned instrument clusters and that fixed my problem. His phone number is 512-948-5900. You probably need the Service Manuel for...
I am having problems with my 1990 L-98. The fuel pressure leaks down to zero within 1 hour after shutting down. I have replaced the fuel pump and the pressure regulator. I am sure it is not either of above since I pinched the fuel lines at the tank and still have the leak down. The manual...
I think the tach on my 1990 L-98 reads too high, it will rev way beyond the red line, speedometer is still climbing. I have never kept accelerating until the "rev limiter" engages.
My question, is there an adjustment, or where should I look to correct the problem?
It idles at indicated 1400...
follow-up
Thank you for the quick response
I will look at EGR and check for stuck injectors, but I am away for next week.
I replaced fuel pump last spring and had to replace it due to inoperative backflow valve
Will keep looking when I return
My 1990 Corvette standard started running sluggish 1 year or so ago. It only has 38,500 miles. Engine will rev to 6000, but not rapidly.
I have changed plugs, plug wires, tested module, coil, new cap and rotor. Fuel pump was changed in June, the new one was changed because the check valve was...
I need to change the driver information switch on my 1990 c4
Does the plastic faceplate around radio, ac controls and driver switch just pop off?
I have been prying gently and the upper portion is loosening but nothing happening around radio
HELP
follow-up
I also had hesitation and stumbling on acceleration, I think fuel pump is problem since pressure did not rise above 45 lbs on hard acceleration, I ordered a fuel pump that is coming in this afternoon and will advise after I install
I have a 1990 base coupe (red) 6 speed, 37400 miles.
Problem is fuel pump, when turning key on, pressure instantly climbs to 45 lbs, then drops instantly when fuel pump stops. Car will run after long cranking.
I checked pressure at the tank outlet and the same occurs, pressure instantly climbs...
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