codes 22 and 33
Thread Starter
Racer
Joined: Apr 2007
Posts: 351
Likes: 0
From: washougal wash.
codes 22 and 33
Recently replaced fuel pump and filter, car ran perfect for a week. I hop in today, start her up and after 30 sec. the idle dips and almost stalls. It does it again and then the ses light comes on. Codes set were 22 and 33. The tps threw a code while I test drove it last month so I supposed that may be it. Pulled batt cable to clr codes, and tps plug. It did the same thing, (tps unplugged) ran really rough, had to gas it above 1500 rpm to keep running. It set same 22 and 33 codes. It finally did settle down to an idle but when revved up feels like it's missing. Does the fact that it threw 22 and 33 together mean anything to anyone? Thanks. (1986)
Last edited by boardroomjimmy; Mar 20, 2010 at 09:30 PM. Reason: yr.
Team Owner
Joined: Jan 2003
Posts: 20,297
Likes: 240
From: Summerland B.C. Canada
You may have got the 33, due to the TPS.
Fix the 22
From my 86 FSM
http://members.shaw.ca/corvette86/Code%2022.pdf
http://members.shaw.ca/corvette86/Code%2033.pdf
Fix the 22
From my 86 FSM
http://members.shaw.ca/corvette86/Code%2022.pdf
http://members.shaw.ca/corvette86/Code%2033.pdf
Team Owner
Joined: Jan 2003
Posts: 20,297
Likes: 240
From: Summerland B.C. Canada
Unplugging the TPS does not rule out the TPS. It is one of the most important sensors, on the motor. It is a MUST to have a properly working unit.
Follow the flow chart for code 22, repair or replace, then see if the code 33, comes back.
Have you ever set the minimum idle and idle TPS voltage ?
Follow the flow chart for code 22, repair or replace, then see if the code 33, comes back.
Have you ever set the minimum idle and idle TPS voltage ?
Thread Starter
Racer
Joined: Apr 2007
Posts: 351
Likes: 0
From: washougal wash.
No, I've only had the car a month. That said, the car was running perfect on thursday, went about 40 mi. round trip to get tires, no issues. I started it today, and problems. For the last month the car has ran very well, (avg. 19mpg) this issue came out of the blue.
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
You can get a TPS test harness for about $15 at Mid America. http://www.mamotorworks.com/corvette?frame=3.900
They also have throttle position sensors for your car.
Here is a copy of the TPS test procedure.
They also have throttle position sensors for your car.
Here is a copy of the TPS test procedure.
