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Firebird

Hi there. Your check engine light can come on for any number of reasons. If the vehicle is running fine and it just came on it may be as simple as a loose or faulty gas cap. If the vehicle...

Normally the alternator wiring has nothing to do with the type of transmission that it has. I would recommend to retrace your steps and make sure that all the connections are properly installed.

Hi there. We typically focus only on OEM applications and repair tips on this website. You might want to consult with a GM performance specialist or contact the cam manufacturer to ensure you followed the correct installation and break in...

Hi there. When a car will start but shortly die afterwards, it is typically due to a a fuel system component; ranging from a mass air flow sensor, fuel pump relay or simply fuel injectors or the throttle body that...

Removing the door panel requires a set of broad flat bladed clip tools (screw drivers are too narrow and will crack the plastic). In the Factory Service Manual, there is an illustration showing where all the clips are located so...

You are constrained by what the original engine was because the original engine is matched to your vehicle's onboard OBD-I computer and vehicle wiring harness. Also, the present suspension in the vehicle (if it is all original) was matched to...

The best thing to do is read the code that is being output by the ECM and that is causing the check engine light to come on. In 1981, of course, the number of codes output was very limited but...

The complete cooling system should be drained and fresh clean water put in with a good quality radiator flush put in. Run the engine for at least 30 minutes at 1000 rpms with the heater in the on position but...

This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on...

Since I cannot display an image on here, I will describe it best as possible. When looking at the diagnostic connector, is is basically a rectangle with flared tabs on one side. Consider that side of the bottom when viewing...

The Service Engine Soon Light is the equal to the Check Engine Light. A proper diagnosis for the Service Engine Soon (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) should be performed to find out what is going on. A tune up may help but the Service...

The 1998 Firebird came with different engines and each one the repair is different. Since you say you have a blown head gasket, do you know why it overheated to blow the head gasket in the first place? You may...

This is caused by an internal pressure leak to the reverse band or the band is slipping from excessive wear. Try having your transmission serviced and make sure fluid if full to see if it helps.

Hi there. Well, to be honest, the biggest reason why these intakes are famous for failing is due to consumers pushing the edge on overheating issues. Although the plastic (polymer) intake tends to be susceptible to causing head gasket damage,...

Hi There, I would suggest checking the ground connections and wiring to be sure there is proper connectivity. This is something that is very easy to overlook and can cause problems with getting the fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement) to come on...

Hi there. You can use a slim jim tool or a coat hanger to open the driver door to get to a lever behind the driver seat to open the trunk. If your vehicle does not have a lever to...

If the problems started after you replaced the PCM, and the first PCM did not have any known issues, you might want to begin your diagnostic by re-installing the original PCM. Seems like you did a lot of work on...

Hi there. Since you have a code for the Exhaust Gas Recirculation (https://www.yourmechanic.com/services/exhaust-gas-recirculation-egr-valve-replacement) (EGR), the EGR could act like a vacuum leak and cause a random misfire. Remove the EGR and clean it out and then put it back on....

The problem you are describing is possibly caused by mis-operation of the "flapper doors" that control and direct air flow throughout the various HVAC outlets. These doors are operated by cable or by servos. It is also possible that there...

The color (black) is just a consequence of "carbon particles" that are normally present in the exhaust flow through the valve. We would need the exact Diagnostic Trouble Code ("DTC" as displayed on the Code Scanner) in order to advise...