tranny problems
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 137
Likes: 0
From: oakland,CA
tranny problems i just took my car out after 2 years and had some problems. i fixed a misfire but now there's another problem. when i floor it i get the drop shift but then theres no up shift unless i back off the gas. it did have a code for slipping. any ideas? do i need a new tranny? thanks.
What was the code that you got? Also is there a reason that your car has been sitting for 2 years? Have you put a stall tc in since you last drove the car? Are you getting any other codes?
Code 1870 componet slipping would that be it ?
First how do the shifts feel other wise
Have you checked the fluild level a tiny leak over two years can make a large loss of fluild
First how do the shifts feel other wise
Have you checked the fluild level a tiny leak over two years can make a large loss of fluild
__________________
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 137
Likes: 0
From: oakland,CA
yes that sounds right. i just flushed the tranny and the level is ok. it shifts fine under all other conditions. there is a kind of hack job done on the speed sensor. i don't know what happened there. i think it's the speed sensor.
Agreed with vince the speed sensor can cause all sorts of issues and codes that could lead you in a different direction , I would definatley address that first
__________________
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
On The Tree
Joined: Mar 2006
Posts: 137
Likes: 0
From: oakland,CA
ok so i talk to the guy who reflashed the computer and he said that put a box in line with the vss but that it was working fine. i changed the vss just in case. problems is still there.any other ideas? please help! thanks guys.
FormerVendor
Joined: Oct 2006
Posts: 3,123
Likes: 3
From: D-F/W
Originally Posted by 98charlize
ok so i talk to the guy who reflashed the computer and he said that put a box in line with the vss but that it was working fine. i changed the vss just in case. problems is still there.any other ideas? please help! thanks guys.
And since the "reflash" was performed has the computer stored any codes... if so specifically what are they?
If there have been any changes in the driveline that will affect final gear ratio those changes can and will affect WOT shift points if they are not addressed in the PCM software. Specifiaclly if the torque converter, rear axle gears or the tire size have been changed a similar condition to what you have described will occur.
g
im curious about the box to or was it some sort of test device .
__________________
thats and idea but i thought most of those cars came with it seems its nearly standard now
__________________
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 137
Likes: 0
From: oakland,CA
the box either tricks the car into thinking it has stock gears or it changes the signal for the new gears. there was one code for internal slipping. but i cleared it and it has not come back. the new gears are 3.42's. the guy said that he can't reflash it because gm did not put those gears in that year car.(98 z28) the cruise control was on the car new. i do have a bent axle too. i didn't think that would matter though.
First off I will say that I am not a tuner. However I have never heard of the box on the vss wires to trick the computer. If your tuner said that he could not tune it because of the gears I would look to contact another tuner for a second opinion. It also might be a good idea to contact HP tuners or the guy's at LS1 Edit and see what they have to say about the gear ratio info for the 98 model year.SEE SPONSORS LIST------------> I have heard of many different issues with the 98 computers and have been told by a couple different tuners that they really are a PITA!