KCJ

[KCJ]

My 1990 ZR1 runs perfectly on Lower Engine Power setting. When switched to Max it misses, looses power and runs roughly. New injectors and ECM were installed recently, same old PROM. The little pump near the right side headlight seems to run all the time with may be 10 second stops.
Any ideas?
Also, know of any Good ZR1 techies n Ontario, Canada?
Many thanks

[jonszr1]

sounds like you have a vacume leak in the secondary stuff thats under the plenum. corvette action center has a very good article on t shooting it.

[tomtom72]

I agree: Tank, check valve, hose/spyder assembly, actuators.....outside shot is also the control solenoid, but that's a long shot. Pump should run at start up for a bit and then go dark if the system is tight.

If you're careful you can r&r the plenum and reuse the gaskets in a pinch.

http://corvetteactioncenter.com/foru...threadid=14272

[KCJ]

Originally Posted by tomtom72

I agree: Tank, check valve, hose/spyder assembly, actuators.....outside shot is also the control solenoid, but that's a long shot. Pump should run at start up for a bit and then go dark if the system is tight.

If you're careful you can r&r the plenum and reuse the gaskets in a pinch.

http://corvetteactioncenter.com/foru...threadid=14272

Thanks much!

[KCJ]

Originally Posted by jonszr1

sounds like you have a vacume leak in the secondary stuff thats under the plenum. corvette action center has a very good article on t shooting it.

Thanks a lot! Read the article and it is very edifying.
Chris

[Paul Workman]

Nothing to add to the other posters (I would have said the same), except to say "Hullo!" Some of the finest folks anywhere to be found here - help with knowledge and parts and just good ol camaraderie!

Getting kinda chilly up thar already, isn't it??

P.

[KCJ]

Originally Posted by Paul Workman

Nothing to add to the other posters (I would have said the same), except to say "Hullo!" Some of the finest folks anywhere to be found here - help with knowledge and parts and just good ol camaraderie!

Getting kinda chilly up thar already, isn't it??

P.

Yup, but not as windy as where you are!
Thanks.

[A26B]

If you do need gaskets or seals, send me an email to A26B@aol.com.

[KCJ]

Originally Posted by A26B

If you do need gaskets or seals, send me an email to A26B@aol.com.

Thanks very much. Will contact you for the gaskets.
How much for the set?
How can I tell what number my ZR1 is?
Chris

[A26B]

Originally Posted by KCJ

Thanks very much. Will contact you for the gaskets.
How much for the set?

Plenum gaskets are $23.50 for set + shipping. When you decide, send me an email with full name & shipping address & I will send you an invoice back with shipping cost.

How can I tell what number my ZR1 is?

I'm not sure what you mean but the last 4 numbers of your VIN is what I think you may be referring to.

Jerry