Another 1990 camaro not starting

[jwineb]

im getting a code 46 VAT ... the car will turn over just wont start it spits but will not run.. i replaced the coil spark plugs, wires, dist, roder,spark module,timing chain, it has good spark .has 42 lbs fuel presser fuel pump kicks on, checked injectors they are fine..im lost what do i spend money on next??

[89IROC&RS]

VATS - Vehicle Anti Theft System

just in case......

is that little pellet in your ignition key. the module that checks that is in the middle of the dash, under the vents. The module measures the resistance of that pellet and compares it to another one in the module. if they dont match, car dosnt start.

I dont suppose youve had a new key made?????

My guess is its one of three things.

the key pellet either isnt the same resistance, or isnt making solid contact in the ignition switch anymore.

the module has gone bad, and is no longer sending a signal to the ECM.

Or the wiring between the two has somehow become an open or grounded circuit.

if youre not good at electrical diagnostics, id take this one to the dealership.

[jwineb]

had one new key made

[89IROC&RS]

Originally Posted by jwineb

had one new key made

has that key ever worked???????

if not, whoever made the key, grabbed one with the wrong resistor in it, and because its not the same value as what the VATS module is looking for, its setting the error code.

if it did work, then its going to be a wiring or module failure.