Question about 1991 Eagle Talon

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91 turbo pops and runs bad at about 5PSI of boost

It will run fine through out the RPM range as long as there is little to no boost. As soon as you hit about 5 PSI of boost it starts to pop and run bad

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  • djlink58 Dec 06, 2008

    I put in a 16 g turbo, 5/50 injectors and a apex system, my car won't run .It pop and cracks and takes off then , it won't run at all as if starving for fuel,i had to have it towed in.

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Did you check the fuel pump relay? It might not be a problem with the fuel itself. It might be an electrical problem. Get a DVOM and do a resistance check on the relay. if you get a high resistance its just a bad relay. If it is a bad relay then the car will crank without turning on.

Posted on Dec 12, 2008

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Im lost on this one but checkwith some dsm forums like dsm talk or dsm tuners

Posted on Dec 02, 2008

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My saab 95 1.9 tid revs fine in neutral when put in drive and pull of there's no power won't go above 3000 ram any ideas


HI Derek.

There are a few possibilities that come to mind.
3K RPM is generally about the break-even point for when Turbo boost would kick in. There is a dump valve on the turbo system that opens up and vents the extra turbo pressure under high-rpm situations where the boost isn't needed - say high but steady speed on a freeway. If the dump valve system is malfunctioning, then that anticipated turbo run-up in power won't happen.

Revving fine when in neutral may not tell you much, other than that the engine can rev. The gating system will (or should) run differently under load - whether climbing a hill or accelerating, this is where you want the turbo boost to give you the extra power. THat's where the exhaust gate should stay shut, or mostly shut, to allow the turbo to force more air into the pistons.

You might want to check whether the APC (Automatic Performance Control) for the turbo has a separate fuse. (The name might be different on your model, I'm remembering from my 80s/90s era Saabs). If the fuse is blown, that could also lead to lame performance, especially as I'd imagine that the system would be built to fail or go to full open if the APC fails or loses power - that'd keep people from having run-away power that they can't manage.

Hoping this helps

D

Dec 08, 2015 | Saab Cars & Trucks

1 Answer

Peugeot 807


Have you checked the PCV system?? If its stuck in the closed position then you will lack power and turbo boost. A vehicle needs 3 things to make it run proper; FUEL,FIRE and AIR. Try that and see if it helps.

Jan 01, 2014 | Cars & Trucks

1 Answer

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1 Answer

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4 Answers

WAS BLOWING BLACK SMOKE AFTER RUNNING GREAT, NOW.....


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Subaru impreza 2l turbo, 1994, starts fine and


your spelling is horrid.   I think your boost control valve or pop-it valve is defective.  Also try a basic tune up with plugs and filters. 

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1 Answer

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mine did the same thing take your turbo and ex manifold off look for cracks boost lag and replace any cracked ex parts or even turbo if cracked

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