86 corvette wont start

[ronbrandi69]

i replaced the power steering pump and all i did was unhook the battery cables. now everything works on car but wont start and the security light flashes. is there a way to reset the security system or do i have bigger problems/

 

[hcbph]

Fighting a similar problem

Be interesting if you get any leads. Mechanic left the hood up and ran the battery down on my 86 while changing the clutch master and slave. Everything looks right and the security light goes out but the starter won't engage. May be related so hopefully if you find a solution it may be related to mine (I hope).

 

[playsdixie]

just a shot in the dark....lock and unlock your door.....happened to me....don't know why..just fixed it...

 

[hcbph]

Doors

just a shot in the dark....lock and unlock your door.....happened to me....don't know why..just fixed it...

Already tried that one. Also bypassed the clutch switch and put a VATS bypass in - no change. Just noticed there's some kind of an aux fuse holder referenced in the manual that I'm going to have to check out tomorrow.

 

[ronbrandi69]

i replaced the power steering pump and all i did was unhook the battery cables. now everything works on car but wont start and the security light flashes. is there a way to reset the security system or do i have bigger problems/

I've tried everything that I know to do. the security light goes out. when the key is in start position the security light flashes.

 

[68 4 spd]

If the security light is on the computer is not seeing the chipped key. Try cleaning the key with an alcohol dampened cloth then run it in and out of the lock while rewiping the key pellet. Also the wires for the system sometimes rub through in the column and cause some grief. Just had a chevy product that had a poorly contacting tumbler assembly. If you have access to a scan tool check to see if the VTD parameters are active, that will give you a starting point. Good Luck.

 

[hcbph]

No Start

Mine turned out to be the switch on the clutch and once bypassed it started.

 

[vetteoz]

just a shot in the dark....lock and unlock your door.....

Your year doesn't have VATS ( security ) being discussed here

 

[vetteoz]

If the security light is on the computer is not seeing the chipped key. .

Background VATS reading
VATS and PASSKey Vehicle Anti-Theft Systems - ThirdGen.org

Pull the error codes

C4 Corvette Diagnostic Code Recovery Techniques

if you have a DTC 46 showing ,the VATS module is not supplying the fuel enable signal to the computer which is as noted above a indication the
module can not read the key successfully.
Vats also disables the starter at the same time.You can confirm a VATS problem by hot wiring the starter;

if the engine cranks over but does not fire up , your problem is VATS related
If it fires then you have a different problem , check the starter circuit wiring from the Ign switch through the starter enable relay and NSS to the starter

 

[MBianco86]

Vats

You said you bypassed VATS - did you also stop the anti-theft alarm from functioning? For the longest time mine wouldn't start because the alarm would go off and even with a VATS bypass it would just drain the battery thinking that the alarm is still going off.
Also check your radio. My original stereo would leave the antenna up and drain the battery overnight.
Good luck!

 

[vetteoz]

did you also stop the anti-theft alarm from functioning?

Anti theft ( forced entry ) is completely separate system unrelated to VATS which prevents the engine being started
See
http://www.corvetteactioncenter.com.../135812-security-light-stays.html#post1134936

the alarm would go off and even with a VATS bypass it would just drain the battery !

A flat battery from any cause is just that; a flat battery