Upshift problems after not driving for 5 mo
Thread Starter
Cruising
Joined: Jul 2004
Posts: 12
Likes: 0
Upshift problems after not driving for 5 mo
77 Vette, auto
After the winter I got the vette out this morning and now it really holds a long time in first before upshifting into second.
Any ideas?
Thanks in advance
After the winter I got the vette out this morning and now it really holds a long time in first before upshifting into second.
Any ideas?
Thanks in advance
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
How fresh is the fluid/how recently has the trans been serviced? Drive it a few times and let us know if the situation changes after it sees some service.
If the fluid and the filter are dirty, change them.
If the fluid and the filter are dirty, change them.
Safety Car
Joined: Oct 1999
Posts: 4,101
Likes: 10
From: NorCal
Couple of thoughts...
What pops to mind are a bad modulator or a stuck governor. Modulator's on the side of the trans and and you can usually tell if it's bad if trans fluid runs out of the vacuum line when you pull it off. Governor is in the tailshaft housing of the transmission and can be replaced without removing the trans, but is a bit of work. I'd check the Modulator, then warm it up real good, then drive it a bit to see if it'll come back to life.
Hans
Hans
Thread Starter
Cruising
Joined: Jul 2004
Posts: 12
Likes: 0
Finally took it to a local shop who have some corvette experience and they diagnosed it as a leak in the steel vacuum reservoir.
They cannot fix that and plugged the EGR valve and it runs fine until I can get it to a corvette shop here in Dallas.
They cannot fix that and plugged the EGR valve and it runs fine until I can get it to a corvette shop here in Dallas.
