84 Corvette code 22
Thread Starter
Burning Brakes
Joined: Jul 2013
Posts: 1,027
Likes: 30
From: Granite City Illinois
84 Corvette code 22
My Corvette has started having an issue with the rpms dropping and sometimes bucking when Im driving.
I checked the codes and got a 22. So now whats the preferred troubleshooting for that code? I haven't looked at the connector yet until I find my contact cleaner.
A new sensor locally looks pretty pricey.
I checked the codes and got a 22. So now whats the preferred troubleshooting for that code? I haven't looked at the connector yet until I find my contact cleaner.
A new sensor locally looks pretty pricey.
Thread Starter
Burning Brakes
Joined: Jul 2013
Posts: 1,027
Likes: 30
From: Granite City Illinois
I saw them at Rockauto theyre a third there of what they are here locally. Either way I would prefer to isolate the problem another $40 sensor that winds up in the storage bin I dont need right now.
There are pigtails for it on ebay but they say 85 or 86 up is there really a difference in the connectors or just the pinouts?
There are pigtails for it on ebay but they say 85 or 86 up is there really a difference in the connectors or just the pinouts?
Last edited by ToniJ1960; Jul 22, 2016 at 11:43 PM.
Team Owner
Joined: Sep 2003
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Did you ever acquire a FSM for your '84? Code 22 and TPS diagnostics on a L83 are pretty straight forward. I'm quite sure you've mentioned having the correct meters so ....
I'd maybe reach out to "HotRodRoy" if you've questions. He's at 240K and driving still and he's been thorough most if not all of the maintenance.
There's certainly many other L83 owners and I'm sure some will post.
The correct TPS GM# 17111262 does seem to carry a price but it was used on so many cars maybe you just find a donor in a local JY - Many/most '82 thru '84 used it.
AutoZone has a WELLS replacement TPS102 on eBay and a "pick up in store" option for it - less expensive than most. Connector is a WeatherPack so I'd think terminals and seals a quick fix. A "pigtail" from most I'd think $12 or less.
I'd maybe reach out to "HotRodRoy" if you've questions. He's at 240K and driving still and he's been thorough most if not all of the maintenance.
There's certainly many other L83 owners and I'm sure some will post.
The correct TPS GM# 17111262 does seem to carry a price but it was used on so many cars maybe you just find a donor in a local JY - Many/most '82 thru '84 used it.
AutoZone has a WELLS replacement TPS102 on eBay and a "pick up in store" option for it - less expensive than most. Connector is a WeatherPack so I'd think terminals and seals a quick fix. A "pigtail" from most I'd think $12 or less.
Last edited by WVZR-1; Jul 23, 2016 at 07:39 AM.
Burning Brakes
Joined: Feb 2013
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From: norway
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Thread Starter
Burning Brakes
Joined: Jul 2013
Posts: 1,027
Likes: 30
From: Granite City Illinois
Yes most likely the sensor OR the connector. I do know my cts connector was rotted and had to be replaced.
But, being familiar with my experience of trouble codes in assemblers, I do recall sometimes a code can be misleading. Im going to find my contact cleaner and start with the connector inspecting it and cleaning it first, but I wanted to ask for someone with specific knowledge to help.
In fact I was hoping WVZR1 might give some input on the connectors specifically why its listed as 85 or 86 up, if theres a real physical difference in those connectors from 84 to 86.
But, being familiar with my experience of trouble codes in assemblers, I do recall sometimes a code can be misleading. Im going to find my contact cleaner and start with the connector inspecting it and cleaning it first, but I wanted to ask for someone with specific knowledge to help.
In fact I was hoping WVZR1 might give some input on the connectors specifically why its listed as 85 or 86 up, if theres a real physical difference in those connectors from 84 to 86.
Team Owner
Joined: Sep 2003
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A "try it" before the cut/splice and I'd certainly think it returnable if it didn't but I suspect there's no issues.
I believe the confusion in cataloging comes from the use of the terminals in the "male" shell. You need a "male" terminal in that "male" shell and there's later application that has a "female" in the "male" shell. That is the more typical "wire to wire" WeatherPack application. Check your connector, I believe the outer barrels are indexed towards the latch and the center has none.
An empty shell would be a GM# 12015793 and you can visualize in this link:
http://www.whiteproducts.com/connectors.shtml
Any large fleet supplier, NAPA or other good AP store should be able to help.
Last edited by WVZR-1; Jul 24, 2016 at 08:38 AM.
Thread Starter
Burning Brakes
Joined: Jul 2013
Posts: 1,027
Likes: 30
From: Granite City Illinois
I took the air cleaner base off and looked it over today. The wires were nowhere as bad as the cts pigtail was, they even felt a lot less stiff than I had expected them to feel, near the connectors.
So I took the connector off and looked at it and it didn't appear to be real bad but I sprayed it a few times plug in unplug spray etc.
Im still getting a code maybe more often now. I haven't checked yet to see if its still 22 or not. Maybe I should try to clean it again. If its not losing contact at the connector maybe inside the sensor. I tried to spray where I might get some inside the sensor, but I don't know what type of construction they use, and the contact cleaner is a brand I never used too.
WVZR1 you had it right about the connector on 84`s at least I can verify.
So I took the connector off and looked at it and it didn't appear to be real bad but I sprayed it a few times plug in unplug spray etc.
Im still getting a code maybe more often now. I haven't checked yet to see if its still 22 or not. Maybe I should try to clean it again. If its not losing contact at the connector maybe inside the sensor. I tried to spray where I might get some inside the sensor, but I don't know what type of construction they use, and the contact cleaner is a brand I never used too.
WVZR1 you had it right about the connector on 84`s at least I can verify.
Last edited by ToniJ1960; Aug 2, 2016 at 12:13 AM.
Thread Starter
Burning Brakes
Joined: Jul 2013
Posts: 1,027
Likes: 30
From: Granite City Illinois
Now it has a code 22 tps v high and weak start up pulse. It does look like the tps screws have been attacked before so I will be checking the adjustment next.
Updating, I took my meter out to the car and checked and I couldn't read any voltage at the center wire with the connector plugged in. I did `find` the 5 volts (4.7
) on the top pin. When I moved the throttle though I got 2-3 volts on the center one so I knew I was contacting the wire and the conector had to be making contact. I guess the lower half of the tps range is gone
I called OR store and I told him I needed a tps sensor for an 84 Corvette and he started asking if it was a 1.6 or 1.8. I said do you mean the engine? He wouldn't say liters but he said if your Corvette has a 350 I don't know where you got it from. I said are you looking at chevette or corvette? Finally he figured it out and said theres one for a 5.7 liter, I said that`ll do.
Updating, I took my meter out to the car and checked and I couldn't read any voltage at the center wire with the connector plugged in. I did `find` the 5 volts (4.7
) on the top pin. When I moved the throttle though I got 2-3 volts on the center one so I knew I was contacting the wire and the conector had to be making contact. I guess the lower half of the tps range is gone
I called OR store and I told him I needed a tps sensor for an 84 Corvette and he started asking if it was a 1.6 or 1.8. I said do you mean the engine? He wouldn't say liters but he said if your Corvette has a 350 I don't know where you got it from. I said are you looking at chevette or corvette? Finally he figured it out and said theres one for a 5.7 liter, I said that`ll do.
Last edited by ToniJ1960; Aug 2, 2016 at 06:34 PM.
Safety Car
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From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Set the TPS at .525v or as close to that setting as possible. If you happen to balance the TBs, you "MUST" reset the TPS. Good luck.