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I have a 1992 buick regal and I have changed the spark plugs wires fuel and air filter oxygen sensor and pcv valve. The car still has a rough idle. Any suggestions to cure this problem?
Wiki User
∙ 14y ago
use a sparkplug wire puller and pull each wire off the coil pack/s see if the idle changes or stays the same.if those check out start unplugging the connectors for your fuel injectors and do the same thing.also check for cracked vacuum lines the cars getting old and the 3800 lines like to crack.clean and or replace your maf sensor.if non eof these things work check for an exhaust leak or broken catalytic.try running a fuel gauge on her.and if all that fails theres still a million more places you could go..ie wiring,ecu,countless other sensors and valves...etc and so forth.hope it helps.
Wiki User
∙ 14y ago
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Engine diognostics test says 0'2 sensors are not heating causing dash light to stay on but they have been changed 3 times any suggestions?
Then it is obvious that the oxygen sensor is not the problem. Quit throwing money at the problem and take it to a professional who knows how to find the real problem.
91 firebird randomly dies on you already changed the fuel filter and it doesnt matter at what speed you go doesnt do it all the time but it does do it?
you should check out the oxygen sensor.I had a problem like that with a Pontiac myself.
How do you find the cause of a surge on a 1985 buick regal it surges at all rpms you have changed plugs wires rotor cap coil air filter fuel filter still surges. Changed the O2 sensor and didn't help.?
try changing your oxygen sensor I have changed the oxygen sensor and it did not help. Do you have any other ideas? Could it be the carb?
You have a 2000 Daewoo Lanos with auto trans shifting problem after warming up to operating temp have frequently changed filter and oil no metal in trans don't think trans is problem any ideas?
Do you have a check engine light. I have had problems with my 01 Lanos and the check engine light came on and it was the oxygen sensor so that may be your problem
87 323 sw stalls at idle and hesitates during acceleration and in gear idle is irratic at stoplight.In park or neutral engine runs rough in lower rpm but fine in higher rpm. Fuel filter or pump or MAF?
If you have never changed your Oxygen sensor, this is most likely the cause of the problem; the symptoms you describe are attributbale to a failing or dead Oxygen sensor. I assume the car has recently been tuned (including a new fuel filter) and the problem persists. Cheers Malcolm Hi Malcolm. Thanks for the tip. I changed the oxygen sensor and it has improved somewhat, but did not quite fixed the problem. It appears that idling is irratic when I'm at a stop light. So far, though, after the oxygen sensor change, engine hasn't stalled. It appears that this problem is pronounced when the engine has warmed up. I purchased a fuel filter and will replace it, but am not confident that it will fix the problem. Any other thoughts are welcome. Thanks. Harukim It turns out that the ignition wire was bad. I replaced the ignition wire and my car is running fine now. It appears that it's been running on 3 cylinders(no 4th). Thanks everyone.
Is the ratio nitrogen to oxygen changed by altitude?
No, the ratio of nitrogen to oxygen is not changed by altitude.
Do goldfish live longer with a filter?
I believe that they do because their gills take in oxygen and the filter would help generate the oxygen.
1986 ranger w 2.9l v6 is missing changed plugs any suggestions?
The next step should be to check the oxygen sensor. If this isn't the issue then check the coil or coil pack to ensure proper firing.
2000 kia sportage The emission control icon on the dash keeps lighting up and it makes the vehicle idle funny. What is that?
If the 2000 Kia Sportage has an emission control icon on the dash and the vehicle idles rough, it is probably the oxygen sensor that is the problem. It could also be that the air filter is dirty and needs to be changed.
You changed the battery on your 1990 Honda accord and now it will crank but not start?
I am having the same problem. Therefore, I took it to a mechanic who said it is probably the oxygen sensor.
Getting a oxygen sensor code changed sensors reset code code came back on whats goin on?
Wiring, computer, or engine mechanical problem.
What ozone did not act as a filter?
Ozone is an isotope of oxygen. It acts as a filter to the earth.
