Vacuum Diagrams

[chris1]

Does anyone know when I can get a complete vacuum diagram for my 1991 L98 Convertible? I purchased the 1991 Corvette Factory Service Manual, including the Section 8A Electrical Diagnosis Service Manual Supplement (both have bright red covers), and neither one has much if anything in the way of vacuum diagrams. I purchased the manuals used off of E-Bay and they seem to be in very good condition with no pages appearing to be missing or torn out near the end of the manual. I had a 1986 Corvette Service Manual a few years back, and I vaguely remember it had pull-out type diagrams towards the rear of the manual, but I can't remember for sure if they were vacuum or electrical diagrams. I am tying to order one of the check valves from the dealer, and it is sometimes hard to describe exactly what and where the part is located. For this particular situation, I will probably bring the car to the dealer and show the parts guy exactly what part I'm looking for, but in the future in case I need to replace other parts/vacuum lines due to age and heat fatigue, it will be easier to do if I had a diagram of the routing of the vacuum lines........

Thanks, Chris.

 

[JonM]

I know my car has a diagram on the fan shroud under the hood. Take a look at yours.

 

[WhalePirot]

I had a 1986 Corvette Service Manual a few years back, and I vaguely remember it had pull-out type diagrams towards the rear of the manual, but I can't remember for sure if they were vacuum or electrical diagrams.

Those are electrical. None of the three manuals I have have much detail on vacuum diagrams. The is a downloadable parts list referred to here someplace. It is a huge file, however, it might help the hapless parts guy.

The underhood diagram may be as good as it gets. When I was converting from the '84 to an '87-like setup, I took lots of digital pictures of stocker cars, for this reason.