Tim_D
Active Member
- Joined
- Aug 28, 2017
Hi All, I'm having a problem with the 1-2 upshift on my 2004R. The car doesn't want to shift from first to second whatsoever, at any throttle opening, unless I back off the throttle. This occurs when the car is fully warm mostly, but also to a lesser extent when cold.
As far as car info - the engine and transmission are basically stock '87 GN, transplanted into a 1964 Buick Special. The non-stock items include:
ENGINE
- Adjustable WG actuator, but turbo is delivering stock boost (15psi max)
- TT v5.7 chip set up for 93 octane
TRANSMISSION
- FTI 12" converter, lockup, 2400rpm stall
- Hughes deep pan and (700R4?) filter - I used the filter that came with the pan, in the kit
A little more info:
- Every shift other than 1-2 feels as it should. All are firm, occur at ~ 4800-4900rpm. The lockup happens in 4th around 50-ish mph.
- The car is running taller gears than a GN (3.08). Therefore, it reads a little slower than actual speed. (speedo reads 50mph, actual speed is 58mph)
- I've performed the TV cable adjustment per the known procedure. This did not significantly change the condition.
I'm not too familiar with the 2004R, so forgive me in advance if I need some a little explanation once some responses come in. For example, I've read about sealing on the servo being a possible cause, but I'm not sure the location of it in the trans.
Thanks in advance -
As far as car info - the engine and transmission are basically stock '87 GN, transplanted into a 1964 Buick Special. The non-stock items include:
ENGINE
- Adjustable WG actuator, but turbo is delivering stock boost (15psi max)
- TT v5.7 chip set up for 93 octane
TRANSMISSION
- FTI 12" converter, lockup, 2400rpm stall
- Hughes deep pan and (700R4?) filter - I used the filter that came with the pan, in the kit
A little more info:
- Every shift other than 1-2 feels as it should. All are firm, occur at ~ 4800-4900rpm. The lockup happens in 4th around 50-ish mph.
- The car is running taller gears than a GN (3.08). Therefore, it reads a little slower than actual speed. (speedo reads 50mph, actual speed is 58mph)
- I've performed the TV cable adjustment per the known procedure. This did not significantly change the condition.
I'm not too familiar with the 2004R, so forgive me in advance if I need some a little explanation once some responses come in. For example, I've read about sealing on the servo being a possible cause, but I'm not sure the location of it in the trans.
Thanks in advance -