Forum: S-Series Tech
12-14-2019, 01:08 PM
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Replies: 43
Views: 994
Re: 1997 SW2 Crank but no start, stuck on wiring.
My best guess is that there was an orifice in the head that plugged and prevented lifters from bleeding down properly. They only had it in their shop for about 1-1/2 hr, but I suppose they could...
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Forum: S-Series Tech
12-13-2019, 11:46 PM
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Replies: 9
Views: 133
Re: 2001 SW2 hesitation
This is the best I've found so far. the diagram in reply #2 shows the pin-out. A and E are the coil and B-C-D are the pot connections.
I am getting the feeling from other threads I found that...
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Forum: S-Series Tech
12-13-2019, 08:47 PM
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Replies: 43
Views: 994
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Forum: S-Series Tech
12-13-2019, 08:44 PM
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Replies: 9
Views: 133
Re: 2001 SW2 hesitation
Check the coil and pot resistance with an ohmmeter. It is easy to do, you don't have to remove the EGR valve to see if the pot is open-circuit. If you find an obvious fault with the coil or pot...
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Forum: S-Series Tech
12-13-2019, 02:26 PM
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Replies: 9
Views: 133
Re: 2001 SW2 hesitation
Did blocking the EGR ports eliminate the hesitation, along with making it seem to have more power?
If all is better with the EGR flow completely blocked, then any cleaning/reaming/blowing of the...
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Forum: S-Series Tech
12-13-2019, 02:10 PM
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Replies: 43
Views: 994
Re: 1997 SW2 Crank but no start, stuck on wiring.
"So they replaced the engine under warranty?"
No, or not likely, at least.
They towed it from my garage and called 2 hours later saying it was ready to pick up. They said nothing was wrong, it...
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Forum: S-Series Tech
12-13-2019, 12:43 AM
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Replies: 43
Views: 994
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Forum: S-Series Tech
12-12-2019, 09:35 PM
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Replies: 43
Views: 994
Re: 1997 SW2 Crank but no start, stuck on wiring.
Pull the plugs to let them dry out and check compression. If compression is OK, then pull the injector fuse (that prevents fuel during priming as well as cranking, the "throttle down" does not) and...
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Forum: S-Series Tech
12-12-2019, 09:29 PM
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Replies: 8
Views: 148
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Forum: S-Series Tech
12-10-2019, 11:11 PM
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Replies: 3
Views: 51
Re: 99 ECM into a 98 SL with a 95 DOHC 5 spd
You have low-Z injectors driven by drivers intended for high-Z? They will work OK (not perfect, dead-time will be a bit wrong) for a while, but will eventually fail due to over-heating of the coil. ...
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Forum: S-Series Tech
12-10-2019, 03:30 PM
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Replies: 17
Views: 7,710
Re: Spark Plug Wires Firing Order
Yeah, lots of confusion here. The firing order is 1-3-4-2. The meaning of firing order never changes, no matter what the engine type is. Cylinder numbering order or order of plug wires on a cap or...
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Forum: S-Series Tech
12-06-2019, 11:39 AM
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Replies: 20
Views: 335
Re: What causes ignition retardation?
Not so strange. There would probably be no (knock sensor) code as long as some signal is reported to the PCM. False triggering, like from a banging idler, would be a "normal" knock. When you...
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Forum: S-Series Tech
12-05-2019, 05:25 PM
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Replies: 20
Views: 335
Re: What causes ignition retardation?
Nope. Under heavy load (accel, high MAP) the spark advance will be reduced.
Rather than a goat, how about a scanner that yields better live-data?
You might try disconnecting the knock...
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Forum: S-Series Tech
12-05-2019, 02:07 PM
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Replies: 20
Views: 335
Re: What causes ignition retardation?
How are you reading that retard, with live-data? Doesn't the live-data identify if it is "knock retard" or "knock detected"? Also watch MAP, see if that if flaky. spark advance is primarily...
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Forum: S-Series Tech
12-04-2019, 04:55 PM
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Replies: 4
Views: 104
Re: 97 sl2 ecm question
What codes are being set? Check before you start out, to see if everything is really being reset. Then check again at the end of the driveway, when the CEL first comes on; and check after it has...
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Forum: S-Series Tech
12-03-2019, 04:25 PM
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Replies: 152
Views: 3,875
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Forum: S-Series Tech
12-02-2019, 09:58 PM
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Replies: 3
Views: 101
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Forum: S-Series Tech
11-23-2019, 10:01 PM
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Replies: 8
Views: 256
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Forum: S-Series Tech
11-23-2019, 01:27 AM
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Replies: 8
Views: 256
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Forum: S-Series Tech
11-23-2019, 01:25 AM
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Replies: 18
Views: 662
Re: battery vs. alternator
No, the radio operation is not a definitive indication of alternator condition.
Were you unable to perform the AC voltage test, or did it come up with essentially zero VAC? If zero, was that on a...
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Forum: S-Series Tech
11-22-2019, 06:12 PM
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Replies: 18
Views: 662
Re: battery vs. alternator
Try reading battery voltage, with the engine running at a "fast idle" (~2000 rpm), using an AC scale on the meter. If the AC voltage is much more than 1V, then the alternator probably has some bad...
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Forum: S-Series Tech
11-20-2019, 12:26 PM
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Replies: 11
Views: 712
Re: weirdness
Bear with me, I am talking about "weird" stuff to try un-stumping you.
Are the stereos both the same? OEM or aftermarket?
Does she have a big wad of keys hanging on both switches?
Have you...
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Forum: S-Series Tech
11-19-2019, 01:07 AM
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Replies: 10
Views: 300
Re: Is my starter blowing my IGN 3 fuse?
Certainly any short-to-ground in the PPL wire circuit could blow the fuse, but that range/safety switch is mostly plastic, so I wouldn't expect such a short there; but not impossible.
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Forum: S-Series Tech
11-19-2019, 12:47 AM
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Replies: 10
Views: 300
Re: Is my starter blowing my IGN 3 fuse?
Hmm, I suppose if the starter solenoid was shorted to ground or the winding was shorted to be very low resistance, and that 30A fuse supplies power to the ignition switch, then the shorted solenoid...
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Forum: S-Series Tech
11-19-2019, 12:33 AM
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Replies: 10
Views: 300
Re: Is my starter blowing my IGN 3 fuse?
Letting the "PPL wire" terminal short-circuit to the large terminal for the battery/alternator terminal would force the starter to be cranking all the time, and sure would not be good for the...
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