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-   -   No boost while in park or neutral (http://www.toyota-supra.info/forums/non-generation-specific-questions/4198-no-boost-while-in-park-or-neutral.html)

adamh88 04-08-2006 12:07 AM

No boost while in park or neutral
 
This is probably a really stupid question but I know little about turbos. Anyway i have an 88 turbo with an auto and the turbo only spools up if im moving and damn near floored and it still kinda lags. I was wondering if its supposed to be like this or if my vaccuum lines are all wrong or what? also i cant seem to find a vaccuum diagram because the one on my hood is worn off and the haynes manual sucks any sugguestions would help Thanx

ddmcse 04-08-2006 02:47 AM

you should be able to find one here

http://www.cygnusx1.net/supra/librar...ndex_tool.html

adamh88 04-08-2006 06:35 AM

thanx alot just by looking at it i can tell mine is way off and it looks like the vsv has a broken nipple or two im gonna look at it more during the day tomarrow what is the vsv and is it nessecary?

adamh88 04-09-2006 03:35 AM

Ok a friend of mine told me turboed automatics arent supposed to make boost when in park or neutral is this true or what?

the_fallen 04-09-2006 03:44 AM

turbo's need load to be able to actually work, just free revving doesn't do this. on a stock engine, you shouldn't see any boost, and on worked engines only a couple of psi at the most

ddmcse 04-09-2006 11:54 AM

thats not just for automatics


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