robs02coupe
Member
I'm working on this '96 LT-1 auto trans. I was told it was a no start and I'm starting from square one.
First, it has been sitting for 3 years and the battery was shot, gas is all varnished.
I replaced the battery and have done the folllowing checks and troubleshot the following:
1. Measured the resistance in the key resistor (7.44-7.49)
2. verified that value by finding the two pin connector under the dash from the lockswitch. Removed the key and had 0, inserted key and had measured value from earlier
3. Verified all fuses on passenger side panel as well as all maxi fuses on both locations by battery were good.
4. engine turns over and cranks fine, all dash instrument panel function correctly
5. engine will fire (roughly) after squirting throttle body cleaner into throttle body.
6. 12vdc signal from fuel pump relay verified at fuel pump connector under fuel door for 2 secs without cranking, solid 12vdc while cranking.
This leads me to understand that the VATS is not the issue since the ignition would be disabled if there were a problem and that the fuel pump would also be disabled.
I'm thinking that the fuel pump itself is shot...anyone have any input on this? I don't want to do any dart-board troubleshooting with this and only replace what is truly wrong, not what could be wrong.
Thanks in advance all,
Rob
First, it has been sitting for 3 years and the battery was shot, gas is all varnished.
I replaced the battery and have done the folllowing checks and troubleshot the following:
1. Measured the resistance in the key resistor (7.44-7.49)
2. verified that value by finding the two pin connector under the dash from the lockswitch. Removed the key and had 0, inserted key and had measured value from earlier
3. Verified all fuses on passenger side panel as well as all maxi fuses on both locations by battery were good.
4. engine turns over and cranks fine, all dash instrument panel function correctly
5. engine will fire (roughly) after squirting throttle body cleaner into throttle body.
6. 12vdc signal from fuel pump relay verified at fuel pump connector under fuel door for 2 secs without cranking, solid 12vdc while cranking.
This leads me to understand that the VATS is not the issue since the ignition would be disabled if there were a problem and that the fuel pump would also be disabled.
I'm thinking that the fuel pump itself is shot...anyone have any input on this? I don't want to do any dart-board troubleshooting with this and only replace what is truly wrong, not what could be wrong.
Thanks in advance all,
Rob