Question about 1995 Pontiac Firebird
Good evening. My car is having difficulty in accelerating and is hesitating severely. In addition, it is idling rough and backfiring at times. I purchased this auto brand new and have maintained it very well. I would appreciate your help.
It would help to know what size your engine is and how many miles are on it. Some things it could be are: dirty fuel filter, spark plugs and or wires, low fuel pressure. clogged or dirty fuel injectors, leaking EGR valve, vacuum leaks or faulty emissions system.
Posted on Jul 21, 2008
It sounds like the Opti Spark Distributor is acting up. You basically need to do a tune up. You can either replace just the cap and rotor, or the whole Opti-Spark unit. Also replace the Spark plugs and wires
Posted on Mar 04, 2009
Also, make sure to read the computer codes.
If you have a MAF leak, check to see that all the dongles are properly connected to the breathing device. There should be no air getting into the system after the Mass Airflow Sensor has read the air going in.
Also, once you have the codes from your computer read, it will tell you anything else. If your oxygen sensors are blown, this could foul up spark plugs and cause other problems. What colour is your oil? is it very black even shortly after an oil change? white? or fairly clean? I would also check spark plug wires, make sure there's no rips or cuts in the wires, they could be arking on the motor somewhere if the plug wires aren't fastenned well. You can buy the fastenners from GM for like $8 . a good idea is like everyone else says, replace ALL your spark plugs with factory GM plugs and wires. That way they're pre-gapped and you won't have to gap the plugs or worry about wire lengths. You'll need to remove the starter to change wires on the passenger side, do it from underneith. Take the rubber thing out of your socket so the plug doesn't get stuck in there. Replacing wires and plugs on my LT1 took me a while. Also put anti-seize on the plugs before you put them back in, make sure you buy anti-seize so that they don't get stuck in the motor in case you have to take them out again (for example when you change headers). All depends , if it's a V6 it should be easy to do, if it's the V8, it's a lot tighter squeeze to change plugs, but if you do it from underneith it's easier. You won't be able to do the passenger side from on top if you have A/C on a V8, you have to do it from underneith and take the starter off. The oxygen sensor is easy to replace on the driver side, check the codes that are being thrown, obviously your check engine light is on, get an ODB1 reader and read your codes and google them or ask us about it.
Posted on Apr 24, 2009
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Posted on Jan 02, 2017
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