My car is running pretty crappy...but it starts up and is fine and i drive it and its fine then after5 minutes of driving it runs like shyt...i seems to be the 02 sensor or the egr...i don't have the tester or anything so do you know a way to tell which one it is so i don't have to spen the 20 for the 02 and the 200 for the egr???

 

what codes are you getting?

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85 Firebird. $150.00
2.8 Auto.
Blown Head Gasket.
Mods Galore to Come....

 

i'm not getting anycodes thats why i'm asking...because the codes would help me pinpoint what it is thats why i need ur help

 

I'd say its your O2 sensor, when my O2 sensor went bad the car would run fine cold until it warmed up. While the EGR valve made it run poorly until warmed up.

YOur best bet, is take it to a local Garage and have them put it on an Analyzer. The Garage near me does it for $25, then you know exactly whats wrong.

 

see i would do that but its like 50 bux here....

 

I recently had this happen, due to someone else working on my car.
Mine is a new engine. I had 20 inches of vacuum at idle. Then I picked it up.
Knew something didn't wound right.
Played around and got it to run smooth, real smooth.
Why?
Vacuum leak at teh base of the distributor, intake manifold part to the PCV valve assembly.
My rubber hose was cracked. So I took a zip tie to the worst part and that cured it. Engine now reading at 19 inches again.
I think you should try all hoses. Bet, you'll find it there. 99% can be fixed with 5/16" windshield wiper hose and new T fittings are available. NONE of the hard plastic hoses are available. ALL discontinued.

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

there must be like a million hoses under there and i don't have a gauge like i said its me and the car

 

Listen for the smoother running engine when ya find the leak.
That's how ya tell.
And a vacuum gauge is a very valuable tool for your car. Should invest the few dollars for one.

 

well i didn't really want to spend much or any money right now because i'm gettin an S-10, F150, or F250..i'm done with sports cars because i always have problems i'm going more for the offroading....and i need the money for the tires and suspension of my next truck.....

 

You just dive in and follow the hoses. Look at all juctions, underside of the hoses.
You ma find the problem, real easy.
Again, just listen for the engine to run smoother. That'll let ya know you found a weak spot.

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

dive right in huh hahahaahahha sounds like fun