Code 22 need help please
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Joined: Sep 2001
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From: SouthEast Texas
Code 22 need help please
A couple of days ago my car was idling funny “ kind of a rough idle, after warmed up and driven around, my car would idle up to about 1,000 RPMS while driving and sometimes when slowing down or at a stop light”. Sometimes if i would pop the gas pedal it would return to normal. So today I checked for ECM codes and got a code 22 which is the TPS; sticking or misadjusted TPS; poor electrical connection, open or short in circuit; defective TPS; defective ECM. I am sure that yall already knew that but I posted it for some of yall that didn't. Which one is it, how do I check to see which one it is? If it is the TPS how do I adjust it or replace it? Also I posted “ Valve clatter right after shift “ now that I think of it my car started clattering after shift about the same time all this other stuff posted started happening. Could the valve clatter be from the TPS being bad or misadjusted? Sorry if this is a little long winded but I was trying to list everything I could think of which concerns this post. Thanks in advance for any advice or help etc.
Thanks,
John
Thanks,
John
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John,
The error code (DTC) is probably not related to the valve lash problem, but needs to be repaired soon, regardless of the valve problem.
The DTC 22 is for a TPS sensor voltage that is too low.
You'll need a digital voltmeter to check/set the TPS voltage.
Throttle Position Sensor (TPS)
Tools needed:
1. Digital Volt-Ohm-Meter (DVOM)
2. Breakout jumper wires or probes (make your own)
3. AutoXray, Diacom, or similar scanner will replace the DVOM and jumper wires.
Turn on ignition, but don't start the engine.
With a diagnostic scanner: plug in the scanner and read the TPS voltage. It should be 0.54Volts +/- 0.07 VDC. If you are using a DVOM instead, connect the VOM to the TPS electrical connector terminals ‘A' and ‘B'.
With a breakout jumper: Disconnect the electrical connector from the TPS. Install the breakout in-line, between the TPS and wiring harness connector. Connect the meter probes to terminals 'A' and 'B' on the connector. (‘B' is the positive connection, ‘A' the signal ground, or negative.)
With probes: If you have very slender probes on your VOM, you can back-probe the TPS connector while it is attached to the TPS. If you have made probes of large dressmakers pins or a similar item, you can back-probe the connector as well. Connect the meter probes to terminals 'A' and 'B' on the connector.
Turn on the ignition to read the TPS output voltage at the idle position. The reading should be 0.54VDC +/- 0.07VDC. The ideal is the center of the range, 0.54VDC for a stock engine. To adjust the output voltage, loosen the two Torx screws holding the TPS to the throttle body, and slightly rotate the TPS up or down, reading the voltage until it comes into specification. Tighten screws. Using the throttle lever, rotate the throttle to WOT (wide open throttle). The TPS voltage should be over 4.0 volts. Close the throttle again, and then slowly open it to WOT, observing the voltage reading. It should increase progressively and in a linear fashion. If it sticks or jumps or falls off at all while doing this check, the TPS sensor may be failing and could be a cause of stumbling and driveability problems.
After achieving the desired setting, turn off the ignition switch. Remove all jumpers or the scanner and reconnect the TPS connector as required.
------------------
Later,
Vader
------------------
If you want to beat the World, it might reach up and pull you down...
Adobe Acrobat Reader
The error code (DTC) is probably not related to the valve lash problem, but needs to be repaired soon, regardless of the valve problem.
The DTC 22 is for a TPS sensor voltage that is too low.
You'll need a digital voltmeter to check/set the TPS voltage.
Throttle Position Sensor (TPS)
Tools needed:
1. Digital Volt-Ohm-Meter (DVOM)
2. Breakout jumper wires or probes (make your own)
3. AutoXray, Diacom, or similar scanner will replace the DVOM and jumper wires.
Turn on ignition, but don't start the engine.
With a diagnostic scanner: plug in the scanner and read the TPS voltage. It should be 0.54Volts +/- 0.07 VDC. If you are using a DVOM instead, connect the VOM to the TPS electrical connector terminals ‘A' and ‘B'.
With a breakout jumper: Disconnect the electrical connector from the TPS. Install the breakout in-line, between the TPS and wiring harness connector. Connect the meter probes to terminals 'A' and 'B' on the connector. (‘B' is the positive connection, ‘A' the signal ground, or negative.)
With probes: If you have very slender probes on your VOM, you can back-probe the TPS connector while it is attached to the TPS. If you have made probes of large dressmakers pins or a similar item, you can back-probe the connector as well. Connect the meter probes to terminals 'A' and 'B' on the connector.
Turn on the ignition to read the TPS output voltage at the idle position. The reading should be 0.54VDC +/- 0.07VDC. The ideal is the center of the range, 0.54VDC for a stock engine. To adjust the output voltage, loosen the two Torx screws holding the TPS to the throttle body, and slightly rotate the TPS up or down, reading the voltage until it comes into specification. Tighten screws. Using the throttle lever, rotate the throttle to WOT (wide open throttle). The TPS voltage should be over 4.0 volts. Close the throttle again, and then slowly open it to WOT, observing the voltage reading. It should increase progressively and in a linear fashion. If it sticks or jumps or falls off at all while doing this check, the TPS sensor may be failing and could be a cause of stumbling and driveability problems.
After achieving the desired setting, turn off the ignition switch. Remove all jumpers or the scanner and reconnect the TPS connector as required.
------------------
Later,
Vader
------------------
If you want to beat the World, it might reach up and pull you down...
Adobe Acrobat Reader
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