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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

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Old 02-11-2014, 07:24 PM   #141 (permalink)
mxracer14
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Old School Oil Burners (Old SOBs) Member

Alberta Coal Rollers Member

Dealer sells them in packs of ten. $2 for a pack. I picked mine up in Lethbridge.

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DIESEL MANIAC!
1995 GMC Turbo Diesel 1500 4X4 w/ProComp 6" lift
Rebuilt by me 'Goodwrench' motor, ARP headstuds, +0.010" head gaskets, Bosch Duraterms, 'F' upper and lower intake, HX40W-II turbo,
Airtex lift pump,
130gpm water pump, 195* t-stat,
stainless steel oil lines, all new/thicker wiring for glows plus override switch, High idle switch
Custom exhaust-turbo back with dump before axle, modified crossover-2.5",
Pyro-boost-trans temp.
315/75/16 Dunlop M/T's, 3.73,
3-Banger Buddy tune

Parts gathered for 7 inch Stacks now im debating them haha
FASS system waiting to be installed.
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Old 02-12-2014, 01:22 AM   #142 (permalink)
664
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I should say I couldn't get my high idle to work. where I would put the connector in B7 or B8 I had power. I will use a volt meter tomorrow to see what the actual power is coming from those leads off the pcm

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Old 07-14-2014, 04:19 PM   #143 (permalink)
Transporter2112
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Now if I only knew where the PCM is in my 97 chevy Express van I'd be doing this mod Thursday!
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Old 09-09-2014, 02:05 PM   #144 (permalink)
Transporter2112
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my B7 already has a factory wire there

Found the PCM in the van, for future tinkerers, take out the dog house, its hung underneath the dashboard in the center of the truck from a plastic tray. loosen 2 10mm bolts and it will slide right out of the tray.

Now my issue, b7 already had a green factory wire coming out of it. I tried cutting and splicing it to the grounding switch but it had no effect, b8 worked. There was a blank pin in location b3 but it doesn't seem to do anything at all when grounded out. I read through all pages of this thread and no one else seems to have this problem. So as it stands I have one high idle setting, but not 2. Has anyone else run into this issue, and if so have you found the correct pin for the second idle setting? I can't tell what RPM i'm getting at regular idle or my one high idle setting because the van's don't have RPM gauges.

So: B7 already had a factory wire, B8 worked for a single high idle setting, B3 was blank, no wire or pin, but doesn't seem to effect idle.

thanks
Stephen
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Old 04-23-2015, 10:50 PM   #145 (permalink)
mkaynorman
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This mod can also be done using a single-deck, 4 position, 3 pole rotary switch (Sold on digikey). I've done it and it works like a charm--kinda nice to have it all-in-one.
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1994 K2500 6.5L Suburban -- Completely and utterly stock (except for the couple LP relay and GP relay mods)

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Old 11-27-2015, 09:35 PM   #146 (permalink)
Joe231
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Just wanted to say thanks for the great write up!!

I got my switches installed and it works great, only issue I have is when I have the switch engaged for the @ 1100 RPM idle my engine doesn't run smooth, it rocks crazy like it has a miss or something, it doesn't do it at any other engine speed, anyone have any insight to this issue?
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Old 07-04-2016, 07:46 PM   #147 (permalink)
Wrebit
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melted connector

Hi,
First, Thanks for this info.
while doing it, I noticed a connector that was melted. it's the red wire that we can see on pict.#16 in your post. it simply is a red wire coming out of the harness and going back in after this connector...
Anyone knows what it's relating to ?
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Old 12-04-2016, 06:19 PM   #148 (permalink)
Boonafide
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Did this on my 95 OBD-1, works amazingly. Sick write up. The pictures made it simple. Thanks man!
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