code 22 nothing wrong with the TPS sensor
#1
code 22 nothing wrong with the TPS sensor
Hello Corvette friends.
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.
Thank you
/ / Lars, Sweden
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.
Thank you
/ / Lars, Sweden
Last edited by Spaced; 01-30-2012 at 02:47 PM. Reason: Spelling
#4
Race Director
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
i think the op's question was already answered above but i thought i would add a quick bit of tps troubleshooting advice
#5
Team Owner
Member Since: Dec 2000
Location: SE NY
Posts: 90,675
Likes: 0
Received 300 Likes
on
274 Posts
Cruise-In II Veteran
At base idle, i.e. 450rpm, the stock setting is .540 Vdc for my '88 Vette.
I prefer about .65 Vdc for better throttle response; this gives about .75 Vdc at normal idle of about 700-800rpm.
I prefer about .65 Vdc for better throttle response; this gives about .75 Vdc at normal idle of about 700-800rpm.
#8
Loosen the TPS retaining screws , rotate TPS to achieve desired V , then tighten and confirm correct V
setting may move when tightened
http://forums.corvetteforum.com/1545725339-post4.html
http://forums.corvetteforum.com/c4-t...es-pulled.html
setting may move when tightened
http://forums.corvetteforum.com/1545725339-post4.html
http://forums.corvetteforum.com/c4-t...es-pulled.html