Ok guys, first of all I would like to say that I have never tried anything like this before, so excuse any dumb questions.
I am trying to trouble shoot a warm start problem and a pretty bad idle hunting problems (1000-1500 rpms in a constant rythm) so I put the ALCL in diagnostic mode and came up with codes 13,33,44. Using the trusy hanes manual I started to elimate certain things, but I have tons of questions, so here goes.
Code 13 - Oxygen Sensor Circuit (Check for a sticking or misadjusted TPS. Check hthe wiring and connectiong from the oxygen sensor, replace oxy sensor).
- Ok, So I took a look at the tps, Thwe connections are fine, the "arm in the back" moves freely and springs back into place nicly. Im not sure how to see if its "misadjusted" - But other then that how do I go about checking it? (QUESTION 1)
- I located the o2 sensor easily enough, The connections seem fine, so I guess I will just staight out replace it.
Code 33 - MAP sensor - Check the vac. hoses from the MAP sensor. Check the electrical connections are the ECM, replace the MAP sensor.
- I removed the MAP, checked the hose on the underside, its in fine condition. Checked where the hose attaches to the t-bone, fine. Is there anywhere else to check the MAP hose.? (QUESTION 2)
- How exactly do i "Check the electrical connections at the ECM" - Is it just refering to its physical condition? (QUESTION 3)
- What are the approx costs for these kind of sensors (map, o2,tps...) (QUESTION 4)
Code 44 - Lean Exhaust - Check the ecm wiring terminals, especially 15 and 8. Check for vacume leakage at the tbi base gasket, vacuum hoses or the intake manifold gasket. Replace the oxygen sensor.
- I have not done much with this one, Im going to wait to see what happens when I replace the o2 sensor , but what exactly should I be looking for at terminals 15 and 8 of the ECM (QUESTION 5).
Thanks alot guys (BTW, its a 87 GT 5 speed.)
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