Err. 22, TPS adjusted, still have Err 22
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Joined: Sep 2003
Posts: 95
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From: Winterthur Switzerland ZH
Err. 22, TPS adjusted, still have Err 22
Hi
I've got another Vette this week, it's a 86.
The response of the car is strange, and the engine drinks too much of fuel while cruising the city. The Service Engine Soon comes up some times while driving.
I checked for errors and i got Error 22, i used WinALDL to check. The Voltage of the TPS was 0.27. I don't have a Voltmeter, WinALDL told me this, i hope its a possible alternative for checking?
So i adjusted TPS while watching at my Notebook, till i got 0.57 Volts. Then, i disconnected and reconnected the battery to erase the faultcode.
But it still comes up!? Can anyone help me?
I attached 2 Screenshots of WinALDL, the first was with without starting the engine (only ignition key on) and the second one with engine started.
Can you see any problems there? What are you suggesting to do/check?
engine off:
engine on:
Thanks Martin
I've got another Vette this week, it's a 86.
The response of the car is strange, and the engine drinks too much of fuel while cruising the city. The Service Engine Soon comes up some times while driving.
I checked for errors and i got Error 22, i used WinALDL to check. The Voltage of the TPS was 0.27. I don't have a Voltmeter, WinALDL told me this, i hope its a possible alternative for checking?
So i adjusted TPS while watching at my Notebook, till i got 0.57 Volts. Then, i disconnected and reconnected the battery to erase the faultcode.
But it still comes up!? Can anyone help me?
I attached 2 Screenshots of WinALDL, the first was with without starting the engine (only ignition key on) and the second one with engine started.
Can you see any problems there? What are you suggesting to do/check?
engine off:
engine on:
Thanks Martin
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Your TPS still looks a little low.
You need to set the TPS base voltage with the IAC pintel fully extended and base idle set to 450rpm. My method is on my site.
Just to check out my theory here, bump your TPS voltage to around .65-.70 Vdc at normal idle (~800-900rpm) and see if the code goes away.
You need to set the TPS base voltage with the IAC pintel fully extended and base idle set to 450rpm. My method is on my site.
Just to check out my theory here, bump your TPS voltage to around .65-.70 Vdc at normal idle (~800-900rpm) and see if the code goes away.
Team Owner
Joined: Jan 2003
Posts: 20,324
Likes: 250
From: Summerland B.C. Canada
Your IAC #s are very high. Set your base idle and tps one more time.
Here is some info on 22 if you don't have it http://members.shaw.ca/corvette86/Code%2022.pdf
Here is some info on 22 if you don't have it http://members.shaw.ca/corvette86/Code%2022.pdf
Thread Starter
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Joined: Sep 2003
Posts: 95
Likes: 0
From: Winterthur Switzerland ZH
I increased first the TPS now to 0.71 (as it was at my last vette), now i don't get the error anymore and the car runs fine!
should i change the IAC now or acting like "never touch a running system"?
Thanks for all your help!
Martin
should i change the IAC now or acting like "never touch a running system"?
Thanks for all your help!
Martin
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From: Lahaina Hi
The book says tps .54 volts and no more. To set ,install paper clip in diag a-b and turn on key wait 30 seconds with key on disconect iac at throttle body remove a-b wire from diag center,start engine and run engine up to operating tempeture.
engine should be in gear for auto 450 rpm std 400 rpm.
After engine warmed up shut off engine and reconect iac.
Second set is TPS WITH KEY ON ,use volt meter on the two top conections use a streigh pin through the two upper wires,connect red top black bottom
radio shack volt meter about 9.95 the one in the little yellow box.Tps should read .54 volts and engine set.
engine should be in gear for auto 450 rpm std 400 rpm.
After engine warmed up shut off engine and reconect iac.
Second set is TPS WITH KEY ON ,use volt meter on the two top conections use a streigh pin through the two upper wires,connect red top black bottom
radio shack volt meter about 9.95 the one in the little yellow box.Tps should read .54 volts and engine set.
Last edited by REDC4CORVETTE; Nov 19, 2004 at 05:27 AM.
