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Forum: S-Series Tech 09-08-2016, 09:48 AM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

Again, use common-sense here. If it can't be flashed, either the PCM isn't "good", or the com connection (cable, blue-tooth, whatever) is bad, or the programmer is bad. Downloading the proper...
Forum: S-Series Tech 08-16-2016, 06:01 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

Are you still watching live-data, looking for the "gear selected" and "gear commanded" to be as-expected? (Like, not N when 25 mph is reached...)
Forum: S-Series Tech 08-03-2016, 03:48 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

Agreed, we are "wandering in the weeds" here, and it doesn't seem likely the problem is with the trans; but checking LP and live-data stuff is so easy to do with OBD2, I like to make those basic...
Forum: S-Series Tech 08-03-2016, 03:17 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

You read line pressure at the port the trans temperature sensor screws into; it is 1/8" NPT, so finding adapter fittings is easy. I would use a "T" so that the temp sensor can still be in place. It...
Forum: S-Series Tech 08-01-2016, 11:53 AM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

With three "wrong ratio" codes, I would be checking line-pressure with a gauge before attacking a PCM.
Forum: S-Series Tech 07-19-2016, 05:05 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

Yep, my mistake; my schematic does show the gen2 CKP connecting directly to the PCM. I still feel that the CKP signal should be checked at the PCM connector, and with the harness fully connected.
Forum: S-Series Tech 07-19-2016, 11:11 AM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

I don't have schematics for the gen3, so have to ask:

Does the CKP in that year not feed into an ICM for decoding, like the gen1 and gen2?

When you check for output from the CKP sensor, are you...
Forum: S-Series Tech 07-18-2016, 05:25 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

I simply don't know how the security system disables fueling, but the lack of all three functions dependent on the CKP circuit (spark, injectors, and pump) is a pretty strong hint that this is still...
Forum: S-Series Tech 07-16-2016, 12:20 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

I dissent... I don't care what the pressure is, or if the pump is even in the car. I just want to know if the PCM is detecting a proper CKP signal and commanding the pump back on; to eliminate the...
Forum: S-Series Tech 07-15-2016, 05:14 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

^^^

"and during starting/engine running."

That's the key bit of info that I don't think the OP has confirmed yet.
Forum: S-Series Tech 07-15-2016, 01:24 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

The fuel pump should always come back on when cranking/running is detected via the CKP sensor.

The fact that pressure stays up after the initial "key-on" pump run is unimportant. Ideally, fuel...
Forum: S-Series Tech 07-15-2016, 12:44 AM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

Well, I gotta admit I am really surprised that it would diesel!

Have you checked to see if the fuel pump comes on when cranking? If it does, then that would preclude the CKP circuit, but if it...
Forum: S-Series Tech 07-13-2016, 09:29 PM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

I don't think it was dieseling, I have never had that happen (except a hot engine, idling fast, and it was with just gasoline). How big a gap are you trying to get the spark to jump when looking for...
Forum: S-Series Tech 06-23-2016, 11:16 AM
Replies: 74
Views: 6,497
Posted By billr
Re: 02 SL2 Injectors not pulsing

Check if the fuel pump comes back on when cranking. After key-on, wait several seconds until the pump stops after the "priming" pump cycle times out; then crank and see if the pump comes back on. ...
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