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1980 Chevrolet Corvette Questions & Answers
350 V8..revs itself and idles at higher rpm..tap excelerator and goes down to normal
if it is a carby engine then check the settings of the automatcic choke and the throttle cam screw settings
it works in a manner so that when you press on the accelerator the automatic choke flips a cam around and the idle speed screw rests on that cam giving a high idle speed until the engine is hot enough not to need a choke at which point the cam is held clear of the idle screw
if efi engine run the fault codes to check for problem accelerator position sensor or throttle position sensor.
My 1980 Rochester carburetor choke is stuck. how do I fix it
Is it an automatic choke?, usually when auto electronic or thermal chokes stick, its an expensive hit and miss affair. After taking off intake air cleaner, view the butterfly valve to see its position, if closed or half way when warm, or, open or half way when cold, then an invasive solution may work for you, but firstly check to see if a little machine oil or CRC on the pivot points and linkages. I have myself disconnected the butterflies actuator linkage and wired it fully open permanently, which often means a little extra accelerator pedal pump or two is needed on start up, and and a 5 minute or more extra warm up before driving, (which is better for your engine life anyway). I have also on occasion rigged a manually operated cable to the actuator linkage with a couple of clamps and run it through to the dashboard, but these are options only, and I would not recommend them for every body, but replacing the auto choke system is no guarantee of success either.
Where is the oil pressure switch in a 1980 Pontiac Lemans 3.8
Should be on the passenger side right above the oil filter - if you have an oil gauge on the dashboard its a round metal cylinder about an inch and a half around with one wire on it or if you have an oil light it looks like a metal spark plug with 2 wires - either one is screwed right into the block
1978 corvette battery hooked up backwards now wont start at all
You didn't list any details of what you tested, found, or replaced, if any. The first place that I would start is at the battery and the starter. Look for a blown in-line fuse or fuseable links. These earlier made cars were pretty simple but they were still using some polarized transistor circuits. While you are inside the fuse box (checking for blown fuses), please check for damaged diodes. I don't think your car has any but just in case. If you don't know what they are. Diodes look like a blade fuse but are black and have an arrow on the top of it. If you write back please clarify your description. I don't know if you mean to say that your car will start and run if you by-pass the ignition system. Sending voltage the wrong way can damage so many parts. It can fry the alternator, the ignition control module, wiring, in-line fuses, fuses, diodes, and the radio. This repair will take some time. Please let me know if I can answer anymore questions. Please be as specific and detailed as you can, Good luck.
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