92 jimmy 4.3 votex code 22..new tps...help with fuel cut off relay please

[randolphtpr]

new fuel pump and pressures checked out just 100's of miles ago...i will double check....right now i am having high and inconsistent idle speed...new tps but i know nothing of the fuel "cut off" relay....code 22...i swapped the fuel "pump" relay with a twin and things don't change...is this the same relay??....code says short circuit in fuel cut off relay....where would i most likely find the short circuit??....check engine goes off after 15 minutes and comes on at start up...no other codes....all my cpi stuff is newer....like i said...i will re-check my fuel pressure but would like to know if i am missing something here.....can anyone help?

[MT-2500]

Code 22 is TPS signal below .2 volts for more than 4 seconds.
Clear code and see if it comes back.
If so check signal voltage on TPS sensor and plugin and wiring.

What code are you getting for fuel pump relay?

[randolphtpr]

in my book code 22 reads as follows:
"throttle position sensor(tps)-signal voltage is low
fuel cutoff relay circuit-open or shorted to ground"
no other code comes up...i'm on another vehicle now but i'll check to see if i have the info to check those voltages at the tps and clear the code in the mean time...thanks for the response...more info asap

[MT-2500]

Work on the tps sensor voltage.
I can not find any referance for a code 22 on fuel cutoff relay.

http://www.troublecodes.net/GM/92-93_43Z_tbi.shtml
Good Luck
MT

[Gabe25]

Originally Posted by MT-2500

Work on the tps sensor voltage.
I can not find any referance for a code 22 on fuel cutoff relay.

http://www.troublecodes.net/GM/92-93_43Z_tbi.shtml
Good Luck
MT

Hope this helps. This is what I have in my books.
CODE 22
Trouble Code 22 indicates that the Throttle Position Sensor (TPS) is reading abnormally low. TPS volts should be close to 0.42 V at closed throttle and rise smoothly in about 0.02 volt increments to a maximum reading of about 4.85 volts at WOT.
The conditions for setting this code are:
• the engine is running, and
• TPS reading is < 0.20 volts

Note: During a Code 22 condition, the ECM uses a default TPS value of 2.6 volts. This will cause the engine to idle very high.

Typical causes for this code include:
1) Maladjusted TPS
2) Defective TPS
3) No +5 volt reference to TPS
4) TPS-return to ECM is shorted to ground or to sensor ground
5) Defective ECM
NOTE: The TPS must be adjusted to about 0.42 volts at closed throttle for the ECM to auto-zero properly. If necessary, adjust the TPS to bring the voltage up or down to this value at closed throttle.