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#1 |
Registered Member
Join Date: Jul 2002
Posts: 38
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![]() I have a '93 GT with a Vortech SQ-Trim s/c and all of the usual bolt on's one would expect.
Traveling in 5th gear on the freeway, i hearing what i believe is detonation at WOT. What's strange is during hard acceleration from a dead stop, there is no pinging. The pinging seems to happen when cruising at around 2500-3000rpm. I then hit the gas pedal and i occurs at around 3500-4000rpm. Another strange note is during normal driving, my gas pressure gauge reading drops. Should it rise when the gas pedal is pushed? I've done the following: clean throttle body; check TPS (0.95- as instructed by the vendor that burned my Autologic chip); clean the MAS; fuel pressure - 49lbs with vacuum on (about 55lbs vacuum off); changed fuel filter; checked all hoses - appears ok. Existing Fuel components: 190lph fuel pump; T-Rex Vortech pump; 30lbs injectors; 6:1 FMU. Any help is appreciated. |
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#2 |
Domestic Rice really sucks!
Join Date: Apr 2002
Location: KY
Posts: 973
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![]() Have you tried to listen for this when sitting in the driveway?
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#3 |
Registered Member
Join Date: Apr 2001
Location: Gallatin, Tn
Posts: 1,326
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![]() Since your S/C, I'm assuming you DO have a BTM right? This will eliminate your timing issues. It worked great for me when I had the 95 GT S/C'd.
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#4 |
Smokes The Dope
Join Date: Aug 2004
Location: Eldorado, Illinois
Posts: 144
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![]() im pretty sure you fuel pressure should be between 40 and 60 and when you accelerate it should rise. if you lose pressure you could have a bad filter.
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#5 |
Smokes The Dope
Join Date: Aug 2004
Location: Eldorado, Illinois
Posts: 144
|
![]() im pretty sure your fuel pressure should be between 40 and 60 and when you accelerate it should rise. if you lose pressure you could have a bad filter.
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