Has anybody seen this with a V6 ?
Thread Starter
Senior Member
Joined: May 2000
Posts: 980
Likes: 1
Has anybody seen this with a V6 ?
You start the car and when you try to rev it in neutral it will not rev. It's like it hits the rev limiter at like 1200 rpm. Fuel pressure is constant around 50 psi, air gets in there no problem, so I'm thinking spark ? Could it be a bad distributor or module ? My 85 Camaro did this when it was very cold, but it would go away when it got warm. This happens on a 91 3.1 RS however. Any ideas ?
p.s. so far I plugged and unplugged the distributor wires, checked the TPS sensor, and swapped the ECM and memcal with no change in symptoms.
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92 Z28 L98 350
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Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires.
Best ET 13.5@105 mph
"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)
http://www.truspeed.org/Members/Chev...dmondIndre.htm
p.s. so far I plugged and unplugged the distributor wires, checked the TPS sensor, and swapped the ECM and memcal with no change in symptoms.
------------------
92 Z28 L98 350
---------------
Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires.
Best ET 13.5@105 mph
"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)
http://www.truspeed.org/Members/Chev...dmondIndre.htm
Supreme Member
Joined: Feb 2000
Posts: 1,416
Likes: 0
From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Air is getting in, but is it getting out? (Plugged converter?)
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Working on:
'84 Z28 LG4 305
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350
using primarily GMPP parts.
Block is in shop!
Awaiting results from all 8 ASE tests.
Starting to look like the Kicker poster child!
------------------
Working on:
'84 Z28 LG4 305
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350
using primarily GMPP parts.
Block is in shop!
Awaiting results from all 8 ASE tests.
Starting to look like the Kicker poster child!
Thread Starter
Senior Member
Joined: May 2000
Posts: 980
Likes: 1
Well as far as I know the converter is hollowed out (grin), then there's a flowmaster cat back behind it with a 2 chamber Flowmaster. I really think it's an ignition related problem, but I wanted a second opinion.
------------------
92 Z28 L98 350
---------------
Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires.
Best ET 13.5@105 mph
"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)
http://www.truspeed.org/Members/Chev...dmondIndre.htm
------------------
92 Z28 L98 350
---------------
Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires.
Best ET 13.5@105 mph
"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)
http://www.truspeed.org/Members/Chev...dmondIndre.htm