86 Vette Lurching on Takeoff
Thread Starter
Advanced
Joined: Jun 2004
Posts: 54
Likes: 0
From: Indianapolis Indiana
86 Vette Lurching on Takeoff
This sounds really weird but when taking off in 1st gear ONLY WHILE turning either left or right, my car stumbles all over itself around 2500-3000 rpm. It's like someone slams on the brakes. The car acts fine if I start off in a straight line. I have also noticed that I can't spin the tires very easily any more. Any Ideas on what might cause this.
86 coupe 4+3
Thanks
86 coupe 4+3
Thanks
Pro
Joined: May 2002
Posts: 541
Likes: 2
From: Kalama WA
I'd check the simple things first- is power steering pump working properly? ( aka-frozen up?) right amount of fluid or steering rack issues causing an unusual load on pump? Brakes- rotors binding from worn out wheel bearings? ABS problems? It sounds like your'e on the right track- keep hunting.
Last edited by kize; Jul 19, 2005 at 10:56 PM.
Ditto - punch it around a corner in first on anything less than 1/2 tank and you run out of gas REAL FAST... 
Instructor
Joined: Apr 2005
Posts: 128
Likes: 0
lateral acceleration switch
Check your ABS lateral acceleration switch under the AC unit.
Take off the dash panel and panel for the AC and shifter console
pull out the AC switch unit.
You will see a small black box 2" x 2" x 1/2" withj a wire going out the right. Unscrew the two bolts and take off the metal clip.
Be careful not to drop or shake it to hard. It is fvery delicate.
Connect a DVM to each pin while it is level.
It should have continuity.
When you tilt it in all four directions to 90 degrees it should disconnect.
If that happens at less than 45 degrees it may be activating the switch to early. This is only a crude test of that switch but it will let you know if it is working at all. That wswitch is used to stop a spin out by applying the brakes when it senses the car's g's are to high in one direction or the other.
You can;t power slide a car with this switch.
I am looking into hooking a switch up to engage and disengage this switch so you can turn it on and off. Not sure if that is possible yet. We are still seeking and answer to our 86-87 ABS problem.
Take off the dash panel and panel for the AC and shifter console
pull out the AC switch unit.
You will see a small black box 2" x 2" x 1/2" withj a wire going out the right. Unscrew the two bolts and take off the metal clip.
Be careful not to drop or shake it to hard. It is fvery delicate.
Connect a DVM to each pin while it is level.
It should have continuity.
When you tilt it in all four directions to 90 degrees it should disconnect.
If that happens at less than 45 degrees it may be activating the switch to early. This is only a crude test of that switch but it will let you know if it is working at all. That wswitch is used to stop a spin out by applying the brakes when it senses the car's g's are to high in one direction or the other.
You can;t power slide a car with this switch.
I am looking into hooking a switch up to engage and disengage this switch so you can turn it on and off. Not sure if that is possible yet. We are still seeking and answer to our 86-87 ABS problem.
