Pressure shows from -300mmHG to about 0 mmHG but no more? boost problem?
#26
Lives on the Forum
Originally posted by akageals
I hate to dispute anyone but the boost pressure sensor does have an effect on the amount of fuel that is injected. If you don't believe that, disconnect that sensor and see how little power you have.
I hate to dispute anyone but the boost pressure sensor does have an effect on the amount of fuel that is injected. If you don't believe that, disconnect that sensor and see how little power you have.
I've seen our improptu test show no adjustment to the fuel injector pulsewidth with change of boost sensor input.  No7Yet has also confirmed this is true.
it's pretty rare for the boost pressure sensor to fail.
-Ted
#28
Well....Ted's always right (well...mostly). Anyway...I've never seen a boost sensor fail but if he says they do then I'm sure they do. Still does not change the fact that your problem probably lies in the gauge.
Todd
Todd
#29
mine was reading.. erractically due to wiring. I watched my stock boost gauge needle literally spasm up and down under boost, after I ran a new wire and spliced the stock gauge in, it was rock solid, in fact, I wonder if I've had bad wiring the whole time I've had the car; it seems like the boost signal had degraded to the point where I just ignored the stock gauge. From people saying the stock gauge is worthless, that almost screwed me. I would check the signal wire anyway.
#30
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
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Originally posted by Piranha
...people saying the stock gauge is worthless, that almost screwed me. I would check the signal wire anyway.
...people saying the stock gauge is worthless, that almost screwed me. I would check the signal wire anyway.
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trickster
2nd Generation Specific (1986-1992)
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07-01-23 04:40 PM