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I have a problem with my Corvette 1984th. I get error code 22, this as you know it's low tps signal to the ECM. I have looked through the Corvette shopmanual. But everything seems normal in all measured values . I have good ground for all components and 5:04 volts reference voltage to TPI sensor. From the transducer in the idle position, I have approximately 0.1 V. So everything seems normal. Despite this, I get again and again the error code 22 after having erased the error codes. The error code will as soon as the engine has been started appear. ”Check engine” light indicates the error code as soon as I read the code in the diagnostic mode.
Engine smokes a lot, shakes and dies after a while at idle.
Exhaust fumes smell gasoline. I also lack strength.
Can anyone help me with this problem. I work as a boat electrician so I have god knowlege of 12v systems and troubleshoot.
/ / Lars, Sweden
Last edited by Spaced; 01-30-2012 at 02:47 PM.
also have seen cars pass the closed/open test only to make a car weird out driving. TPS sensors should do a gradual sweep of voltage closed to open. when some get old and oxidized and or are china cheapies the voltage is not gradual and you can get some weird driveability issues.
i think the op's question was already answered above but i thought i would add a quick bit of tps troubleshooting advice