Adjust valves one a1998 pontiac firebird 3.8 - 1998 Pontiac Firebird

They are 2.2,2.4,3.4 3.8 and 5.7.

No you could burn out valves

Car Won't Start Because of Anti-Theft System That Uses ...

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Car Won't Start and Security Light is On on Pontiac Firebird. Problems with the anti-theft systems using the raised-chip key can prevent the car from starting.

Security light was on and car won't start - CarGurus

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CarGurusJul 24, 2007 - Check to see if your key chip isnt worn out(small silver thing on top part... My 1994 pontic firebird won't start and I no everything works great on ...

Pontiac Firebird Questions - security light - CarGurus

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CarGurusFeb 5, 2009 - Hi I've recently bought a pontiac firebird the car doesn't have keys as previous owner ... Security light was on and car won't start 3 answers.

91 Pontiac Firebird won't start (Pontiac Firebird)

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Jun 18, 2008 - My '91 Pontiac Trans AM GTA will not start. When I turn the key, the engine does nothing, as if the battery were dead or the clutch pedal wasn't ...

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How to Install Clutch 98-02 LS1 F-Body Part 1 of 2 - YouTube

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Part one of installing a new clutch on my 2000 Trans Am. Part 2 will include installation ... How to Master Cylinder Install and Drill Mod (LS1 F-Body) - Duration: ... 6:28. Removal and Servicing ofClutch Master Cylinder to Slave Cylinder ... LS1 98-02 Chevy Camaro Z28 SS Pontiac Firebird Trans Am F-Body ...

A bunch of things can cause this.
It could be the engine idle speed is too low, can be caused by a faulty Idle Air Control valve. Watch the rev counter when it does it and see if it's very low. See if it rises when you turn off the air con. The air con puts a load on the engine which should be adjusted for by the IAC valve (automatically opens the throttle very slightly to keep the engine speed from getting too low).
Also possible to be fuel pressure, Mass Air Flow sensor, ignition coil, spark plugs or even a blocked air filter.
Is the check engine light on?
Try looking at Pontiac firebird forums. Google search firebird idle faults. Good luck.
https://www.google.co.nz/search?q=1998+Pontiac+firebird+idle+adjust&ie=utf-8&oe=utf-8&client=firefox-b&gfe_rd=cr&ei=YbpsWavMPOrc8weH8qDYAw

https://www.google.co.nz/search?q=Pontiac+firebird+ide+problems&ie=utf-8&oe=utf-8&client=firefox-b&gfe_rd=cr&ei=z8dsWcXfBOHDXsLtjoAN

sounds like bd fuel pressure regulator. it is supose to idle aound1,000

Sounds like you might have a stuck governor valve. It is located on the drivers side near the rear, under a round steel cover about 3 inches in diameter.

There are many different methods to adjusting valves. Instead of trying to describe them to you I'll send you this link. This page is for lt1 firebirds but it is the same procedure for your car whether it's a v6 or v8.

check fluid if burnt or brownish change filter if it hasnt been changed may be problem -- no external adjustments on tranny to replace a band-valve body- gear -clutches have to tear down trans

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.