HELP! Major problems after tune
Thread Starter
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Joined: Oct 2012
Posts: 78
Likes: 6
HELP! Major problems after tune
Hi All,
I just got my car back from a local and highly recommended tuning shop in Dallas. Everything seemed great but tonight I took the car to the store and when I tried to turn on the A/C, it wasn't working. It worked fine before I had the last work done to it. Anyway, at the next stop light, I went to accelerate and the tranny wasn't engaging or changing gears. The car was hardly moving. I managed to pull over into a parking lot and turn the car off. I turned it back on and had enough to get the car home but not much else. The car was loping really bad and the tranny wasn't going. I just had the tranny rebuilt by another Corvette restoration shop with Heavy Duty components. I am totally at a loss. Does this sound like a tranny issue or a tuning issue.
I had a new cam installed, timing chain replaced, power steering cooler removed, motor mounts replaced and the car dyno tuned this week.
Does anyone have any ideas on what I am up against here?
Thanks
I just got my car back from a local and highly recommended tuning shop in Dallas. Everything seemed great but tonight I took the car to the store and when I tried to turn on the A/C, it wasn't working. It worked fine before I had the last work done to it. Anyway, at the next stop light, I went to accelerate and the tranny wasn't engaging or changing gears. The car was hardly moving. I managed to pull over into a parking lot and turn the car off. I turned it back on and had enough to get the car home but not much else. The car was loping really bad and the tranny wasn't going. I just had the tranny rebuilt by another Corvette restoration shop with Heavy Duty components. I am totally at a loss. Does this sound like a tranny issue or a tuning issue.
I had a new cam installed, timing chain replaced, power steering cooler removed, motor mounts replaced and the car dyno tuned this week.
Does anyone have any ideas on what I am up against here?
Thanks
Burning Brakes
Joined: Jan 2011
Posts: 825
Likes: 99
Hi All,
I just got my car back from a local and highly recommended tuning shop in Dallas. Everything seemed great but tonight I took the car to the store and when I tried to turn on the A/C, it wasn't working. It worked fine before I had the last work done to it. Anyway, at the next stop light, I went to accelerate and the tranny wasn't engaging or changing gears. The car was hardly moving. I managed to pull over into a parking lot and turn the car off. I turned it back on and had enough to get the car home but not much else. The car was loping really bad and the tranny wasn't going. I just had the tranny rebuilt by another Corvette restoration shop with Heavy Duty components. I am totally at a loss. Does this sound like a tranny issue or a tuning issue.
I had a new cam installed, timing chain replaced, power steering cooler removed, motor mounts replaced and the car dyno tuned this week.
Does anyone have any ideas on what I am up against here?
Thanks
I just got my car back from a local and highly recommended tuning shop in Dallas. Everything seemed great but tonight I took the car to the store and when I tried to turn on the A/C, it wasn't working. It worked fine before I had the last work done to it. Anyway, at the next stop light, I went to accelerate and the tranny wasn't engaging or changing gears. The car was hardly moving. I managed to pull over into a parking lot and turn the car off. I turned it back on and had enough to get the car home but not much else. The car was loping really bad and the tranny wasn't going. I just had the tranny rebuilt by another Corvette restoration shop with Heavy Duty components. I am totally at a loss. Does this sound like a tranny issue or a tuning issue.
I had a new cam installed, timing chain replaced, power steering cooler removed, motor mounts replaced and the car dyno tuned this week.
Does anyone have any ideas on what I am up against here?
Thanks
Last edited by Mrc100; Mar 8, 2013 at 10:19 PM.
Race Director
Joined: Oct 2010
Posts: 14,475
Likes: 783
From: Las Vegas NV
Sorry your having problems and I hope you get it straightened out. I dont mean to sound negative but things like this is why I keep everything under the hood the way it came from the factory. I've modded a lot of cars in the past and learned if you want it to stay reliable leave it alone.
Thread Starter
Advanced
Joined: Oct 2012
Posts: 78
Likes: 6
That goes without saying. It's already back at the tuners. They think it is a voltage problem and either the battery or alternator. They did say that they got some low voltage notifications when it was on the dyno so they did a quick charge to the battery. I wish I would have known that before I had the problem. Hopefully that's all it is. I was posting because I thought someone else may have had a similar problem and could comment. At this point I'm waiting until at least Monday when they open back up.
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Sorry your having problems and I hope you get it straightened out. I dont mean to sound negative but things like this is why I keep everything under the hood the way it came from the factory. I've modded a lot of cars in the past and learned if you want it to stay reliable leave it alone.
Burning Brakes
Joined: Jul 2007
Posts: 870
Likes: 15
From: Upland, CA
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Race Director
Joined: Dec 2005
Posts: 11,811
Likes: 106
From: God's Country, ID
Exactly! The LS2/LS3 engine tranny etc can take a good flogging for many many miles if you stay on top of any issues that crop up. The biggest downside is the crappy made (mostly a materials issue) connectors, seals, bolts etc GM chooses to save a few pennies per car on. You see failures even on stock cars, but the additional heat from added components, SC's, TT's etc accelerate the endlife to a point. The upside is these cars are easy to diagnose and repair with a just a fairly small amount of tools. Not to mention the parts are easy to find and not expensive compared to other high performance vehicles.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
When I read you post,,,,,,,,,,,,,,, My very FIRST thought was a VOLTAGE ISSUE.. Make sure that your charging voltage is correct. 14,0 - 14,6 VDC.
Bill
Bill
Melting Slicks
Joined: Oct 2010
Posts: 2,220
Likes: 16
From: Sugarhill Ga
I had the alternator act up on mine RIGHT AFTER my cam install ? never had a problem before ? replaced it (it is not cheap) and haven't had a problem since. good luck hope you get it figured out.
som folks have had issues with voltage after swapping plugs, getting the wires close to alternator, others have had the power wire on the starter damage ?
som folks have had issues with voltage after swapping plugs, getting the wires close to alternator, others have had the power wire on the starter damage ?
Drifting
Joined: Mar 2007
Posts: 1,274
Likes: 30
From: Perdido Key,Fl. Fl.
Sorry your having problems and I hope you get it straightened out. I dont mean to sound negative but things like this is why I keep everything under the hood the way it came from the factory. I've modded a lot of cars in the past and learned if you want it to stay reliable leave it alone.
I did a lot of mods on my old C5 and constant issues with codes, tranny not shifting correctly. When I got my 08 LS3 I saif no engine or tranny mods. Car runs perfect with 54,000 miles. I hope the op gets things working better.
Le Mans Master
Joined: Jan 2001
Posts: 6,439
Likes: 369
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Melting Slicks
Joined: Aug 2010
Posts: 3,063
Likes: 81
From: Tumwater, WA
That goes without saying. It's already back at the tuners. They think it is a voltage problem and either the battery or alternator. They did say that they got some low voltage notifications when it was on the dyno so they did a quick charge to the battery. I wish I would have known that before I had the problem. Hopefully that's all it is. I was posting because I thought someone else may have had a similar problem and could comment. At this point I'm waiting until at least Monday when they open back up.
