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Old 01-03-2004, 02:08 AM   #1
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Default power loss

has this happened to you? while driving on the E-Way. i noticed at take off, the car would move very quickly, then lose power, then regain it all. then lose it again. i installed a new supercharger, hoping that would fix the problem. but is there another part to look at also like a boost relay or pressure sensor?
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Old 01-03-2004, 02:14 AM   #2
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Sounds like a boost control solonoid to me. Have you pulled codes? If it'* boost related, it'* almost never the SC itself.
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Old 01-03-2004, 02:25 AM   #3
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i never pulled any codes. Do you know the part# for the boost control solenoid? 95SSEI
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Old 01-03-2004, 02:34 AM   #4
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Are you sure you want to shotgun this? How sure are you that it'* boost related?

92-95 SSEi Wastegate valve:

Quote:
GM PART # 12353309
CATEGORY: All
PACK QTY: 1 CORE CHARGE: $0.00
GM LIST: $29.40
OUR PRICE: $16.76
DESCRIPTION: VALVE KIT
From www.gmpartsdirect.com

But I'd strongly suggest you pull codes first.
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Old 01-03-2004, 10:12 AM   #5
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This almost sounds like timing pull to me. The car would be full HP until the PCM pulls timing causing you to lose power, then it would give it back slowly until you had full HP again. You should probably find some way to scan this while driving or check for codes.
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Old 01-03-2004, 10:13 AM   #6
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Hmm, I'm having a similar problem. When I'm just cruisin down the road at say like 50mph and I step on it to either pass, or to get up a hill the boost guage will go up, but my car won't downshift and speed up. I really have to punch it to get it to go anywhere.

I've only had my car since July. Last month I had it tuned up, with AC Delco plugs, Taylor 8mm wires, K&N drop in, new fuel filter and o2 sensor. I am still not thinking that my car is putting out the power that it should. I haven't yet "serviced" the SC. Is there a specific type of maintenance that should be done to it?
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Old 01-03-2004, 11:25 AM   #7
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Short of checking and changing the SC oil and checking the SC belt no prevenative maintenance is required. You can do a search for changeing SC oil for threads that cover this.
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Old 01-03-2004, 02:24 PM   #8
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That oil should be changed if you don't know when it was done last, but it will have no effect on performance whatsoever. Removing and cleaning the throttle body would be a good idea for both of you.

Are both of you running premium fuel?
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Old 01-03-2004, 02:40 PM   #9
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Yeah, I always run 92 octane gas. I'll look into changing the SC oil.
Will a dirty throttle body add to a rough idle?

I know what'll help my Bonnie. An Intake! lol. I seriously can't wait!!
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Old 01-03-2004, 02:46 PM   #10
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Dirty TB can contribute to a rough idle. But alot of other things can too. MAF, coils/plugs/wires, dirty fuel injectors, etc. Even a vacuum leak.
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