sputtering when making boost - TCCoA Forums
 
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post #1 of 7 (permalink) Old 11-09-2007, 08:10 PM Thread Starter
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sputtering when making boost

this is kind of a weird issue that popped up about a week ago thats got me scratching my head. when the car is first started is makes a weird puttering noise. you rev it up a little bit and it will stop. as you are driving it and you go over 3lbs of boost the puttering gets relly bad and nearly dies. i checked the vacume lines, just glancing over them and everything appeared ok. has anyone had this problem before??

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post #2 of 7 (permalink) Old 11-10-2007, 04:12 PM
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Kinda sounds like a MAF to me, or a boost leak (intake gasket). Although i'm not sure if these engines even have a MAF, lol.

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Red Green, is that you? Might consider looking into fabbing an intake setup that isn't so, well, ghetto.
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post #3 of 7 (permalink) Old 11-24-2007, 11:05 AM
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they do have mafs

check for leaks around the intercooler piping.
the mafs could be dirty. but most likley its a sparkplug or plugwire issue

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post #4 of 7 (permalink) Old 11-25-2007, 08:28 AM
 
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That is generally a DIS module that needs to be replaced. I think any parts store can test them, so you might pull it off and have it tested. If it started all of a sudden it is most likely the DIS. Check that out first. They are $100-$150 depending on where you buy them.
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post #5 of 7 (permalink) Old 11-25-2007, 05:15 PM
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generally the dis needs replacing when the tach starts to goof off.

you can have it tested, even buy heatsink compund to extend its life, but i am telling you get new wires and plugs thats is the biggest cause of stumbling in boost. get double plats and dont do them for another 3 years.

check the maf, and make sure that your getting fuel. clean the injectors and make sure your getting over 40psi of fuel in boost.

00 GT transmission,Jmod,30,000 gvw transmission cooler
Air silencer removed(cone filter added w/ heatshield)
shaved emblems, doors, trunk, and antenna
Clear corners
chrome 95sc rims
20% tint all the way around,
6gallon air tank capacity, Viair 400c commpressor
175psi pressure switch
custom guages by Scott H.
http://www.cardomain.com/ride/2733945
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post #6 of 7 (permalink) Old 11-26-2007, 09:37 AM
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dis-mod

i have a dis-mod from my 90sc .thx tony.
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post #7 of 7 (permalink) Old 12-05-2007, 09:03 PM
 
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not trying to jack the thread but you talking about the rpm tach goofing off???? becasue mine does it all the time bounceing up and down LOL
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