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Old 10-02-2011, 06:00 AM   #1
devsdad01
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Default Boost Trouble

I recently replaced the head gasket on my 1990 Turbo Coupe and took it out for a test spin today. It runs and idles smooth, but when the turbo spools up towards 4 psi it feels as though it looses massive amounts of power and it pulses very rapidly almost like it is missing. I set the time so I know that couldn't be a factor. The car ran fine before the head gasket blew and was boosting a solid 8 to 10 psi. Any ideas on what I may need to check or what could possibly be causing this problem?

Any information would be greatly appreciated as I am stumped!
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Old 10-02-2011, 06:06 PM   #2
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knock sensors? are they pluged in?/broke?

afm wireing?

buddy of myn has the same problem

do a code chech should tell you

if its your knock sensors then it would cause the issue your explaining as they change the timing
hope this helps
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Old 10-03-2011, 02:34 PM   #3
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Missing under boost? After you've checked for codes, check your coil ground and double check intercooler piping, clamps and hoses.
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Old 10-03-2011, 04:46 PM   #4
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Quote:
Originally Posted by El Supracabras View Post
Missing under boost? After you've checked for codes, check your coil ground and double check intercooler piping, clamps and hoses.
+1. i concure doctor
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