1988 pontiac firebird formula wont start. all the time and when it does you have to pulsate the gas pedal til it runs normal

SOURCE: 97 firebird formula hard to cold start

Check the cold start injector useing a digital multimeter with a bar graph. Unplug the injector wires and insert the probes into the wiring plug, crank the engine and the bar graph should pulse if it does remove the injector and with the wiring reconnected and the injector held over a suitable container crank the engine and observe the spray pattern. If insufficient replace injector. This should be a starting point at least

Marvin

• 85242 Answers
• Posted on Oct 16, 2008

SOURCE: 1995 pontiac firebird formula v8 idle

The idle speed is not adjustable, it is computer (PCM) controlled, you can turn the screw for the hard stop, but the computer will just over ride that adjustment for the most part, what I think you may need to do is clean the throttle valve and the idle speed control air bypass valve, use carb spray, spray it in the intake with the engine running use the at least 1/2 the can, the engine will try to stall, keep it running, after you are done disconnect the battery for 10 minutes, reconnect and drive a few days so the computer (PCM) can relearn your driving habits and set the idle correctly based on your driving.

SOURCE: My car does not come to a smooth stop it pulsates.

You could have warped rotors. The need to be replaced or resurfaced. Does the steering wheel shimmy a little when applying the brake?

Peter Cooper

• 41 Answers
• Posted on Sep 02, 2009

SOURCE: i have a 89 pontiac firebird formula that is not

see if your car has a fuel filter and check its not blocked, or see if your fuel lines from the tank to the motor and dented or blocked

SOURCE: 89 firebird will not start sometime you turn the

Here is a great write-up on the subject. This will get rid of the entire VATS system. It was the only thing that saved my 94 Park Avenue: http://newrockies.com/vatsbypass