Boost problems
#1
Boost problems
I have a 1989 auto that i am assuming has original turbo just put a boost gauge on it today . Climbing a hill at full throtle i only made 17 lbs.Holding the brakes and full throttle i only made 4 lbs. Truck just does not seem to be making power
what do yall thing is wrong
what do yall thing is wrong
#2
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My basically stock '90 12v 5 speed only makes 23 PSI max and that is with an upgraded Cooler Tubz crossover tube.
#4
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The trans might not load the turbo enough sitting still like that unless you have an aftermarket converter. The 17 psi sounds about right for a stocm truck.
#6
The engine is probably lugging when power braking because of the tight converter. Do some pump mods and it will be a different animal. You should check the fuel pressure too if it still has the diaphragm pump. It will still run with a dead pump but zero fuel pressure and less power.
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#8
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That's assuming the air filter is clear, the exhaust is reasonably free, and the turbo isn't screwed up.
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