The knowledge on this site is second to none and I’ve seen a lot resolved issues go way with your help. I need some help and I now this will get long so sorry in advance.
2002 I brought the car out of storage and decided to do some upgrades. Tested the compression and it was good so I decided to go ahead with the upgrades. The car was completely stock other than an art carr shift kit and it ran great. Installed all parts in my signature and then drove the car mildly for a few weeks. When I started to get aggressive with the car I noticed that on top end of first gear it would run out of power. Top of first the car was pulling hard then the nose would drop, shift gears, then start to make power again. RPM and boost stay high through all of this. I then replaced valve springs but no change. Then I was told to try a new ignition module. I replaced that, but again no change. Then I tried a new heated 02 sensor. Again no change. I then went to a few transmission shops and took the owners for a drive. All shops concluded that it appeared that the 2nd gear band was worn, but would they would not no for sure without getting inside the transmission. I went with a guy known for turbo Buicks in Detroit area. Once the transmission was apart there was very little wear observed, but we went ahead and had a stronger transmission built. I got the car back and no change. I took the car back to him and he worked on it for a few days trying different set ups but he could not make the stall go away. He concluded the transmission was perfect and the car would never shift right with my stall. I picked the car up on a flat bed and moved to Iowa. Frustrated and out play money the car went into storage.
2007 Five years later I’m ready to play again. Brought the car home, dropped the fuel tank, installed new fuel, fuel filter, and fuel pump. I then put the stock torque converter, injectors, and chip in the car. No change in the car however I do notice that if I quickly go from the break to the gas the car falls on its face. I also notice that medium acceleration 8-10 psi of boost the car lays good rubber between first and second. WOT from first to second it falls on its face. I then put in new rear main seal and timing chain. While doing this I noticed the main ground that gets connected to the bottom of the turbo was never connected back up when I replaced the turbo five years ago. I was excited to find this, but after hooking it back up no change took place. I then put my new injectors, torque converter, and chip back in. I then adjusted the crank sensor, tps sensor, and cam sensor. I’ve now installed a scan master and found a chip that runs the car at all the normal levels (little rich all around). The other night I tried a new ECM but no change.
I’ve budget some money to make upgrades to the car this summer but I must fix this issue first.
Summary:
1) car stumbles/almost dies if you quickly go from the break to the gas and floor it ( I know it’s a little rich on fuel)
2) top of first gear at WOT car looses power, shifts gears, then starts to make power again
3) medium acceleration of 8-10 psi of boost the car shifts very hard leaving good rubber on the road
Any advice would be appreciated.
Thanks
Chad
2002 I brought the car out of storage and decided to do some upgrades. Tested the compression and it was good so I decided to go ahead with the upgrades. The car was completely stock other than an art carr shift kit and it ran great. Installed all parts in my signature and then drove the car mildly for a few weeks. When I started to get aggressive with the car I noticed that on top end of first gear it would run out of power. Top of first the car was pulling hard then the nose would drop, shift gears, then start to make power again. RPM and boost stay high through all of this. I then replaced valve springs but no change. Then I was told to try a new ignition module. I replaced that, but again no change. Then I tried a new heated 02 sensor. Again no change. I then went to a few transmission shops and took the owners for a drive. All shops concluded that it appeared that the 2nd gear band was worn, but would they would not no for sure without getting inside the transmission. I went with a guy known for turbo Buicks in Detroit area. Once the transmission was apart there was very little wear observed, but we went ahead and had a stronger transmission built. I got the car back and no change. I took the car back to him and he worked on it for a few days trying different set ups but he could not make the stall go away. He concluded the transmission was perfect and the car would never shift right with my stall. I picked the car up on a flat bed and moved to Iowa. Frustrated and out play money the car went into storage.
2007 Five years later I’m ready to play again. Brought the car home, dropped the fuel tank, installed new fuel, fuel filter, and fuel pump. I then put the stock torque converter, injectors, and chip in the car. No change in the car however I do notice that if I quickly go from the break to the gas the car falls on its face. I also notice that medium acceleration 8-10 psi of boost the car lays good rubber between first and second. WOT from first to second it falls on its face. I then put in new rear main seal and timing chain. While doing this I noticed the main ground that gets connected to the bottom of the turbo was never connected back up when I replaced the turbo five years ago. I was excited to find this, but after hooking it back up no change took place. I then put my new injectors, torque converter, and chip back in. I then adjusted the crank sensor, tps sensor, and cam sensor. I’ve now installed a scan master and found a chip that runs the car at all the normal levels (little rich all around). The other night I tried a new ECM but no change.
I’ve budget some money to make upgrades to the car this summer but I must fix this issue first.
Summary:
1) car stumbles/almost dies if you quickly go from the break to the gas and floor it ( I know it’s a little rich on fuel)
2) top of first gear at WOT car looses power, shifts gears, then starts to make power again
3) medium acceleration of 8-10 psi of boost the car shifts very hard leaving good rubber on the road
Any advice would be appreciated.
Thanks
Chad
