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Search: Posts Made By: billr
Forum: S-Series Tech 11-11-2018, 11:00 PM
Replies: 16
Views: 607
Posted By billr
Re: Replaced steering column, accessories OK but no crank?

I suspect that when you changed that switch it connects to a harness up at the top of the column, correct? Follow that harness down to the next connector, the one you would have had to disconnect to...
Forum: S-Series Tech 11-10-2018, 11:46 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

3-pin TO-220 package

Ha, now I see the trick with ebay: you have to search for ECM, not PCM
Forum: S-Series Tech 11-10-2018, 07:51 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

The third item I see in that Mouser link is TI #TPS793475DBVR; that is a SOT-23 SMD part, not DIP, and has to use at lest 4 pins, 5 preferred. What am I missing?

As I look for another PCM, will...
Forum: S-Series Tech 11-10-2018, 06:28 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

No, mine is a 3-pin device. Thanks for looking, though.

I have a scope channel dedicated to PCMB, it has been rock-steady both in the car and on the bench. Whenever I have scoped PCM1 it has...
Forum: S-Series Tech 11-10-2018, 04:06 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

Yeah, if it is going to be a bear to track down/fix, and impossible if it is anything other than a component in that 5V supply circuit. I have already looked on ebay, they all seem to be in the...
Forum: S-Series Tech 11-10-2018, 02:01 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

Yes, my gut-feeling is that it is a (electrolytic) capacitor; the way it "heals" so fast when power is first applied and then takes an hour or more to go bad again. Do you have any info on that PCM...
Forum: S-Series Tech 11-09-2018, 09:39 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

The last tests above were done with the TPS, MAP, and EGR all disconnected. I recently did retest (all still disconnected and no harness connectors shorting to ground) and the first key-on had the...
Forum: S-Series Tech 11-09-2018, 09:23 PM
Replies: 6
Views: 125
Posted By billr
Re: 2000 SL2, Serpentine belt, idler pulley

I suggest the Gates 38112, a steel pulley and stock diameter, no fussing with special belt size. However, if your present pulley is/was plastic, it may not be stock size so your existing belt may...
Forum: S-Series Tech 11-09-2018, 07:12 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

Whatever this finally turns out to be, it sure has been "entertaining"!

I disconnected the (electric) EGR to try forcing a code. At key-on that way the 5V had about 1.4V P-P ripple as it came up,...
Forum: S-Series Tech 11-09-2018, 04:45 PM
Replies: 6
Views: 125
Posted By billr
Re: 2000 SL2, Serpentine belt, idler pulley

How long did you keep it running after the temperature warnings?
Forum: S-Series Tech 11-09-2018, 03:41 PM
Replies: 6
Views: 125
Posted By billr
Re: 2000 SL2, Serpentine belt, idler pulley

Don't rush into panic mode. Put a new tensioner on it and see what you have after that. That liquid may well just be coolant.

The alternator light should have come on immediately, well before...
Forum: S-Series Tech 11-09-2018, 03:32 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

Understand, the engine is not running during these most recent tests. This morning the scope is showing the PCMB voltage as a steady 13.6-13.8V Even when I had the battery charger on it, the PCMB...
Forum: S-Series Tech 11-09-2018, 01:14 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

I got the UHJB loose easy enough, but it would only come up about 3/4", not enough to check much underneath. It seemed like the cable bundle was clamped underneath. I asked about that but got no...
Forum: S-Series Tech 11-08-2018, 08:57 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

How do I extract those contacts? I assume they come out the wire-side, but does the ex tool go in from the mating side? It looks like the ex tool would go in the row of holes outboard of the actual...
Forum: S-Series Tech 11-08-2018, 07:02 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

I need pin-outs for those two PCM connectors (2 x 12 and 2 x 16).

I can only see numbers on the housings and the info I have shows pin labels like "7C", "1J", "14A", "B10"... and no clue which...
Forum: S-Series Tech 11-08-2018, 04:33 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

I'm back again, after wandering in the weeds for a while. Please forgive me if my posts are rambling or confusing, I simply am confused! I'm hoping just discussing it with you kind souls will...
Forum: S-Series Tech 11-05-2018, 11:54 AM
Replies: 7
Views: 233
Posted By billr
Re: 3.5k rpm idle after TB replacement, settled down now

What??? No, the IAC stepper "homes" at the beginning (or maybe end) of each key-on cycle; the PDM knows exactly where the IAC pintle is unless there is a failure.

Also, knowing the position is...
Forum: S-Series Tech 11-05-2018, 11:47 AM
Replies: 6
Views: 202
Posted By billr
Re: Clutch and Gas Issues

And, most cable throttles have been that way as long as I can remember. My '69 Corvette is identical.

Check those engine mounts
Forum: S-Series Tech 11-04-2018, 07:29 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

Well, I hate to admit it, but I forgot about the blue locks! I know what they are, of course, and noted them on that connector when I was removing the scabbed-on wiring a couple of days ago, but...
Forum: S-Series Tech 11-04-2018, 05:17 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

Help me with a quick detour here. The Saturn dealer I bought the car from had installed an aftermarket anti-theft system, which I asked them to remove before buying the car (new). They just...
Forum: S-Series Tech 11-04-2018, 04:10 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

I think the radio presets have remained intact through all this, but expect they are gone now; I disconnected the battery before fussing with these JBs. I have been clearing codes using the scanner,...
Forum: S-Series Tech 11-04-2018, 01:58 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

I went over those schematics posted once, but will have to go over them again. However, I don't think they show the whole IPJB.

Errors in manuals are inevitable, we just need to keep that in...
Forum: S-Series Tech 11-04-2018, 01:48 PM
Replies: 6
Views: 202
Posted By billr
Re: Clutch and Gas Issues

Want a guess? Motor mounts.

I have four vehicles in my yard with clutches ('67 Bronco, '69 Corvette, '94 SL2, and '95 SL2), and they all feel much the same. There is some difference between the...
Forum: S-Series Tech 11-04-2018, 01:30 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

I'm looking for some commonality between the circuits of the FP, tach, SES light, and engine-cooling fan; as they are all operating erratic at times. The only thing I see so far is the PCM.
...
Forum: S-Series Tech 11-04-2018, 01:10 PM
Replies: 43
Views: 582
Posted By billr
Re: '94 SL2 manual trans, electrical help needed

Yep, when you mentioned that it is a BRN connector, in reply #6, that was the hint I needed.

Do the rest of you understand, there are two similar-looking connectors there, two different "F6"...
Showing results 1 to 25 of 500

 
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