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Removing the cats and air pump will have no effect on the computer. The question is what else has been removed. Probably not a full list, but for the ECM to work you need the o2 sensor, throttle position sensor, temperature sensor, map sensor and speedo sensor. I might have missed one but ther...

That is not a normal response from a working computer. Try to read the codes. If you do not get the 12 code, the computer is not operating correctly. Check the connections again, then it is probably the computer It is not to expensive, about $100, you will need to transfer the prom...

The front one is definitely from the snorkels on the air cleaner. Good luck starting it up. I rebuilt the power steering control valve and the ram -- pretty easy, not too expensive, and quite rewarding because the leaks have all stopped for now!

1980 California cars ONLY had the CCC, But I have read in other articles in the forum that ALL the 1980 corvettes had the Check engine light in the center dash, but it didn't do anything.

They are hard to find. I have one that is in pretty bad shape and does NOT work. I was unable to find anyone that still made them, but eventually I found one by asking people who were disabling their computers if they would sell me theirs. Eventually I found someone who sold it to me. So...

Do you still have the CCC attached and working?? -- if yes and you want to change the carb to another model, you will have to disable the CCC -- This means a new distributor as well

I will try to include a wiring diagram when I get home tonight -- My experience says that most time it is the switches. The way that the switches are wired, if BOTH of them do not work perfectly, NEITHER door lock will work correctly. What are the symptoms.

OK, The green connector is indeed a way to measure the carb during idle -- no other time. And it should not be connected to anything normally. If you are not getting a check engine light during idle, and the idle performance is acceptable, there is no reason to measure anything at this...

The ECM controls the fuel mixture in the primary side of the carb only. WOT performance is mostly unaffected by the ECM. With the ECM disconnected or not working properly, the car will run VERY rich (10MPG kind of rich) and the timing will stay at 6deg all the time (Slugishness!). If you want...

The electric fan connection is on the passenger side of the car, past the ac pump along the fender wall. It is a two wire connector that SHOULD be sitting right on top of the air intake. Normally, if the air intake has ever been removed, people push the wire down so it will be just under the...

Trying to figure out two things, why doesnt it change with an input from the idle air bleed screw and why does it go to small numbers after a few minutes. I guess I will try to fix the idle issue -- my engineering training says, fix anything that you know is wrong -- you never know how it...

I know what you mean about forgetting stuff -- keep trying!! I sure could use a hint. I did not do the bushings -- but spraying starter fluid by the base of the carb has no effect -- do you think that it indicate a leak through the bushings? It is winter soon -- I will tear the carb down...

It is steady, But it does change if the engine is revved. I will check the PCV valve. If it where running open loop, would it eventually kick out a code?

Update Well, it has been a while and I just wanted to close the loop and perhaps get a little advice on how to proceed from here Spent the summer tracking down lots of vacuum leaks and some loose bolts on the exhaust manifolds. Still had code 44 (lean)-- Decided to bring both the lean and...

That printed wiring run took a lot of current. Did you put the guage cluster back in with the battery connected? could you have shorted one of the studs to chassis ground as you where assembling the guage. Always disconnect the battery doing this type of work. I am always in a to much of a...

There are a lot of threads on this forum that says running an 81 at 12 deg BTDC brings our some hidden horsepower. The factory setting is 6. I have tried it and been unimpressed. I will soon get a little more scientific, setting at 6 -- 0-85 according to my GPS then set to 12 and run 0-85...

Glad everything is working -- I love when scary problems come with No-cost solutions. So my question -- "Break the tires loose" Your kidding me -- My 81 can only get the slightest little squeal on a good day --have you done any mods (true dual exhast?)

The ticking in the engine compartment is the mixture solenoid being activated 10 times a second. It is normal when you short the test plug and nothing to worry about. I would clean and check the connectors again - The best electrical cleaner I have ever seen is Deoxit -- it can be found on the...

Yes I have -- earlier this spring. I have a stock 81 with the TH350 automatic transmission -- best time 16.1 seconds. At the time my transmission was not shifting correctly at WOT. That is all sorted out now, I bet it will do about 15.9, I will try again in the fall and let you know how...

Gerry Do you know how to find the connector info -- my NAPA guy could not find anything.