1982 crossfire

[jimbil208]

Any information on SA sensor?
jimbil208

 

[82ColEd]

Sorry Jim,
what do you need info on ? SA Sensor?


Stefan

 

[jimbil208]

Sorry Jim,
what do you need info on ? SA Sensor?


Stefan

hello Stefan, not getting closed loop. Looking at defective 02 sensor on catal.....converter.

 

[toobroketoretire]

hello Stefan, not getting closed loop. Looking at defective 02 sensor on catal.....converter.

The O2 sensor and fuel filter (mounted to the frame under the passenger's feet) need to be replaced every 30,000 miles. When the O2 sensor begins to fail the engine will idle faster than usual and it'll smoke a bit because it stays too rich. Both are readily available from most auto parts stores.

 

[82ColEd]

hello Stefan, not getting closed loop. Looking at defective 02 sensor on catal.....converter.

Ah! sorry bit slow on the uptake Jim..

The O2 is usually to blame, yes. When the "Computer" (Ie Sensor) detects an incorrect temp from the O2 it doesnt all sorts of fun things, like not going into closed loop..

The O2 sensor and fuel filter (mounted to the frame under the passenger's feet) need to be replaced every 30,000 miles. When the O2 sensor begins to fail the engine will idle faster than usual and it'll smoke a bit because it stays too rich. Both are readily available from most auto parts stores.

Err, ever 30k miles? Why? What source did tell you that? Never heard of a interval of those before. If they go faulty, replace, but on a schedule.


Stefan

 

[toobroketoretire]

Ah! sorry bit slow on the uptake Jim..

The O2 is usually to blame, yes. When the "Computer" (Ie Sensor) detects an incorrect temp from the O2 it doesnt all sorts of fun things, like not going into closed loop..



Err, ever 30k miles? Why? What source did tell you that? Never heard of a interval of those before. If they go faulty, replace, but on a schedule.


Stefan

The 30,000 mile figure comes from my 1982 shop manual.

 

[kpic]

Stefan:
30K is correct.

"Bosch recommends replacing unheated one- or two-wire O2 sensors on 1976 through early 1990s applications every 30,000 to 50,000 miles. Heated three and four-wire O2 sensors on mid-1980s through mid-1990s applications should be changed every 60,000 miles. And on 1996 and newer OBD II-equipped vehicles, the recommended replacement interval is 100,000 miles."

"One study conducted by Sierra Research a few years ago found that a high percentage of vehicles that fail emissions tests failed because of a bad oxygen sensor. Failure rates were highest on older vehicles with unheated O2 sensors (failure rates ranged from 60 percent to 72 percent). The next highest failure rate was among vehicles with first generation heated O2 sensors (19 percent to 27 percent), and the lowest failures were found on the newest vehicles with second generation heated O2 sensors (2 percent to 14 percent)."

REPLACING OXYGEN SENSORS FOR PREVENTIVE MAINTENANCE

There are other answers to the problem and this is a good read on the subject.

The O2 wire on one of my past trucks kept throwing a light. The dealer kept replacing parts because the computer said so.. The 5th time, the error message said replace this so they did. The mechanic put the vehicle in reverse and the light came on and he was supposed to replace that. He said forget the computer and actually looked. The answer was the O2 sensor's wire was hitting the exhaust manifold.

The fix was shorten the wire. :eyerole

Often when a computer doesn't have an answer; it picks something to answer. The dealer replaced thousands of dollars of parts. I was quite happy it was on GM's dime, not mine.

I doubt they would have told me if it had been my dime...

 

[82ColEd]

The 30,000 mile figure comes from my 1982 shop manual.

Stefan:
30K is correct.

"Bosch recommends replacing unheated one- or two-wire O2 sensors on 1976 through early 1990s applications every 30,000 to 50,000 miles. Heated three and four-wire O2 sensors on mid-1980s through mid-1990s applications should be changed every 60,000 miles. And on 1996 and newer OBD II-equipped vehicles, the recommended replacement interval is 100,000 miles."

"One study conducted by Sierra Research a few years ago found that a high percentage of vehicles that fail emissions tests failed because of a bad oxygen sensor. Failure rates were highest on older vehicles with unheated O2 sensors (failure rates ranged from 60 percent to 72 percent). The next highest failure rate was among vehicles with first generation heated O2 sensors (19 percent to 27 percent), and the lowest failures were found on the newest vehicles with second generation heated O2 sensors (2 percent to 14 percent)."

REPLACING OXYGEN SENSORS FOR PREVENTIVE MAINTENANCE

There are other answers to the problem and this is a good read on the subject.

The O2 wire on one of my past trucks kept throwing a light. The dealer kept replacing parts because the computer said so.. The 5th time, the error message said replace this so they did. The mechanic put the vehicle in reverse and the light came on and he was supposed to replace that. He said forget the computer and actually looked. The answer was the O2 sensor's wire was hitting the exhaust manifold.

The fix was shorten the wire. :eyerole

Often when a computer doesn't have an answer; it picks something to answer. The dealer replaced thousands of dollars of parts. I was quite happy it was on GM's dime, not mine.

I doubt they would have told me if it had been my dime...

Thanks, learnt something new today, so, well worth getting up this morning..
-Stefan