1990 Chevrolet Corvette - Answered Questions & Fixed issues

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yes, that could be in fact the problem, some cars have a sensor for the seat belts and if you do not engage the belt the it may not start

Is it the 5.7 L? It's mounted on the transmission. countrycurt0

Which is it ????? Question about 1990 Chevrolet Corvette Open Question I have a 1999 corvette coupe

It sounds like an intake manifold vac leak. After the engine warms up use a can of spray carb cleaner at all edges of the intake. Use short bursts of the cleaner and see if the RPM changes. If it does you have a vac leak. That means replacing manifold gaskets.

Check engine light on ? Did you have it hooked up to diagnostic tool ? Could be a few different thing's , engine sensors , fuel system problem , plugged exhaust etc... If unfamiliar with this your best bet would be to take it to a qualified repair shop .

This may be related to the antitheft system. The system is known for turning off the starter and/or injectors when it fails. Normally when the injectors are turned off, the car will run for a second or two, and then stall. When it's the security locked out starter, you won't even hear a click when you turn the key. Is there a light on the dash that says SECURITY or a picture of a car with a lock through it? This is a common problem worth looking into. http://www.diy-gm-security.com/

If you have tested for voltage at the pump wiring and find none, remember the ECU may not supply pump current if it finds signals missing from critical sensors. There is also an inertia switch in the circuit I think.

Replace the relay or resistor first. Relays can stick closed, will cause a fast blower. Resistors can be fast to slower speeds. After that is burnt wires somewhere. Personally , I look at the wires first, Check them for ground shorts and impedance. Have an Ohm/volt meter?

Hi Jackie , It doesn't have to have a code stored in the ECM memory for a problem too exist . need some more info from your if you would like some ideas as to the problem ! What engine does yours have ? 5.7L ? What type fuel system does it have - TBI - throttle body fuel injection ? I had vehicles at the Chevy dealer I worked at with this type fuel injection , where the engine raced really fast . Vacuum leaks , bad plug wires can cause this problem . The engine computer is compensating for more air entering the engine ! After fixing the problem it still was racing , you have to drive the vehicle an get the speed up over 35 MPH for the ECM to reset !

Check starter relay for proper power and operation. Underneath drivers dash area

Make sure your pats key is clean. Sometimes the chip gets dirty. Also try disconnecting the battery for a couple of minutes. This will reset the system...

I suggest using the original fuel injectors that came with the vehicle. Buy them from the dealership and 97% of the time your problem will be gone. Always test drive vehicle to confirm repair. I’m happy to assist further over the phone at https://www.6ya.com/expert/richard_9a19ee73dfa4686a

No there are different 700R4 transmission, well that not quite true. The 700R4 had many jobs to matted to Corvettes to SUVs, the internals are where the differences were in the 700R4 such as the servo's and boost valve which can be easily replaced. Best thing to do is to got to a Transmission shop that can build a transmissions for your Corvette or buy a replacement 700R4 for your year of Corvette. That is why the shift points and firmness are different in a Corvette then a Cadillac while they both have 700R4 in the 1990's. Be bad for a Corvette to shift like Grandma's Cadillac going to play dingo. Good luck and hope this helps.

Does the vehicle crank and not start? Your mechanic must re check his work then inspect battery, spark, fuel pressure 30psi min,and computer codes. Good luck and always have your mechanic test drive vehicle to confirm repair. I’m happy to assist further over the phone at https://www.6ya.com/expert/richard_9a19ee73dfa4686a

check this out.. I used it on one of my cars.. it will bypass it and u can do it yourself

Is it an aftermarket radio??? Normally they have a 5A fuse on the back of the unit itself, or in line of the radio's power wire.

The orifice tube is located in the evaporator inlet pipe at the liquid line connection. The evaporator is located in the right rear side of the engine compartment. .

As someone who made this mistake, are all the wires reconnected under the fuel door? Check fuel pump fuse

Clean the ground terminal and post them try