Its time to diagnose the problem. I'll definitely test the IAC and TPS. also from another recent problem I've encountered the coolant temp sensor may be out of adjustment leading to the hunting idle. but im pretty sure the code 22 (low tps signal) is just the tps, its the only code, and its on consistently.
as predicted, the iac was adjusting constantly creating the hunting described. that is most likely the combination of, or either of the two sensors. (IAC, and CTS)
the code 22 being the most anoying here because it just "switched" off like theres nothing coming from the tps anymore. even when I pull the connector going to it, and play with the throttle, it still hesitates.
I diagnosed the tps, its getting voltage. black to black for ground and red to blue for voltage. getting from .2-6.5V low-high with an analog tester.
is there any way to test somewhere for the signal to the ecm? the motor is acting like there isnt a tps connected. so somewhere there is a break to the ecm.
that would be the grey, right?
[This message has been edited by AL87 (edited 03-25-2014).]
update, i took the center console out to get to the ecm, and I found the blue wire to the tps, it looks like it had been tampered with at one point before me. the wire was broken and the clip wasnt in good condition when I pulled it out. the retainer was gone. will attempt to correct and update later.
I have the same idle hunting in my 85 GT. I got an IAC from ebay for $10.61 shipped. I haven't installed it yet though. I hope that's the issue.
------------------ ===Always trying to find time to work on cars=== Louis Duet Baldwin, Long Island, NY Where driving hard is SOP. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Blue" <= '85 Fiero GT Stock V6---Stock everything. Trying to keep it 'mostly' that way. ~~~~~~~~~~~~~~~~~~~~~ "Boo" <= '81 Delorean DMC-12 The "DuetLorean" VIN #5835 Stock PRV engine Robertson Equipped Neiland/Delman Engineered Carbed and loving it! (Peugot 604 manifold) ---"Sorry purists"
I will install my new IAC and inspect the ECM wires as well. Thank you for the tip.
------------------ ===Always trying to find time to work on cars=== Louis Duet Baldwin, Long Island, NY Where driving hard is SOP. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Blue" <= '85 Fiero GT Stock V6---Stock everything. Trying to keep it 'mostly' that way. ~~~~~~~~~~~~~~~~~~~~~ "Boo" <= '81 Delorean DMC-12 The "DuetLorean" VIN #5835 Stock PRV engine Robertson Equipped Neiland/Delman Engineered Carbed and loving it! (Peugot 604 manifold) ---"Sorry purists"
