1996 optispark, plug and wires replacing
#16
Re: 1996 optispark, plug and wires replacing
If the dowel pin is in the correct slot, that is all that matters. If it was in the wrong slot you should at least get some popping or backfiring when you try to start it. The spark timing would be off. I've seen/diagnosed cases where the pin was a bit too short, slipped out of the correct slot, and the engine was still starting and running somewhat normally.
Have you checked the fuel pressure?
Have you checked the fuel pressure?
#19
Re: 1996 optispark, plug and wires replacing
When you turn the key to the “RUN” position, the fuel pump should run for 2 seconds, and shut down. Should produce at least 40 PSI. Pressure should not bleed off quickly.
The pump will not restart when the starter is cranking the engine until: 1) the PASS-Key (VATS) system sends the “fuel enable” signal (50 Hz square wave from BCM) to the PCM, and 2) the PCM sees the low resolution cam position pulse signal from the optical sensor in the Opti.
The pump will not restart when the starter is cranking the engine until: 1) the PASS-Key (VATS) system sends the “fuel enable” signal (50 Hz square wave from BCM) to the PCM, and 2) the PCM sees the low resolution cam position pulse signal from the optical sensor in the Opti.
#21
#24
Re: 1996 optispark, plug and wires replacing
OP,
I scanned this thread and don't see any error codes listed. Did you check for codes? Is the check engine light on? I learned (from Fred!) long ago not to try to diagnose these cars without a code reader.
I scanned this thread and don't see any error codes listed. Did you check for codes? Is the check engine light on? I learned (from Fred!) long ago not to try to diagnose these cars without a code reader.
#25
Re: 1996 optispark, plug and wires replacing
tested pressure, spiked at 43 to 48 psi initially, held at 40 pounds, slowly bled off after five minutes pressure was down to 38 pounds
#27
#30
Re: 1996 optispark, plug and wires replacing
Shoebox’s photo is a 94/95 coil with 2 connectors. Yours is a 96/97 coil with a single connector. Internally, the wiring is all the same. Just probe the 2 pins in your single connector the same way shown in the photo. The exact resistance isn’t important. You are just verifying there is no open circuit.
94/95:
http://shbox.com/1/95_ign_system_schematic.jpg
96/97:
http://shbox.com/1/1996_ec_03_ign_system.jpg
The photo was not intended to tell you that you had you had to use the same brand/type of meter. Your appears to be set on 25 Kohms, so that's all that matters.
Fuel pressure is OK.
94/95:
http://shbox.com/1/95_ign_system_schematic.jpg
96/97:
http://shbox.com/1/1996_ec_03_ign_system.jpg
The photo was not intended to tell you that you had you had to use the same brand/type of meter. Your appears to be set on 25 Kohms, so that's all that matters.
Fuel pressure is OK.