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Problem Solved:: Gauge issues
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Topic: Problem Solved:: Gauge issues (Read 10225 times)
19kflo80
Newbie
Posts: 10
Newbie
Problem Solved:: Gauge issues
«
on:
January 02, 2015, 07:33:16 PM »
1984 CUCV, 350tbi(swapped 6.2), th400. Like many post I've come across, i too am having oil pressure gauge problems. My issue is that my OPG is pegged all the way to the right any time i turn the key on running or not. From what i read, this is likely an open circuit. However, i have good continuity from my tan SU wire to the cluster and 0.5ohm short to grd from cluster to grd block on parking brake. I swapped OPG from another cluster and same result. This is about the extent of my testing capabilities. I would really like to keep the factory gauges, but at this point i am considering a cheap set of mechanical gauges. Any help would be appreciated.
«
Last Edit: January 07, 2015, 10:50:33 PM by Irish_Alley
»
Logged
1984 CUCV, 350tbi, th400, NP208, dana 60, 14bolt FF, 6" springs front, shackle flip rear, 38.5x15/ 16.5 Boggers
LTZ C20
Senior Member
Posts: 3795
"I'm here for a good time" -George Strait
Re: Gauge issues
«
Reply #1 on:
January 02, 2015, 07:45:09 PM »
Which type of engine do you have in the truck, tbi 350 or 6.2 diesel? just want to be double sure.
Have you checked your oil pressure sensor for proper operation?
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LTZ Cheyenne C20
19kflo80
Newbie
Posts: 10
Newbie
Re: Gauge issues
«
Reply #2 on:
January 02, 2015, 07:57:19 PM »
350tbi. I checked the SU(i think), i checked where the tan wire plugs in on SU to ground and it and it was open.
Logged
1984 CUCV, 350tbi, th400, NP208, dana 60, 14bolt FF, 6" springs front, shackle flip rear, 38.5x15/ 16.5 Boggers
19kflo80
Newbie
Posts: 10
Newbie
Re: Gauge issues
«
Reply #3 on:
January 02, 2015, 08:00:15 PM »
Also, on the back of the cluster(while engine running) i have 14vdc on one side of the gauge and 10vdc on the other side. Is that normal?
Logged
1984 CUCV, 350tbi, th400, NP208, dana 60, 14bolt FF, 6" springs front, shackle flip rear, 38.5x15/ 16.5 Boggers
Dr_Snooz
Junior Member
Posts: 590
"I like to take hammers, and just break stuff"
Re: Gauge issues
«
Reply #4 on:
January 02, 2015, 09:17:52 PM »
Without consulting the wiring diagrams, that sounds like a dead short to ground through the pressure sender. It's not uncommon for them to go out.
Logged
1989 Chevy Suburban V-2500, 5.7L, TH400
1990 Chevy C-3500 Ext. Cab, 7.4L, 3L80
2009 Chevy Silverado 1500 WT 4WD, 4.8L, 4L60
LTZ C20
Senior Member
Posts: 3795
"I'm here for a good time" -George Strait
Re: Gauge issues
«
Reply #5 on:
January 02, 2015, 09:47:31 PM »
Like the Dr. said, the pressure sending units have a tendency to go out or leak, mine did both, after replacing it about 3 times, I finally got an adapter fitting and used the sending unit from 90s tbi engine, also got the appropriate harness to plug into it, being those sensors in the 90s where weather pack connectors not the older style spade connectors.
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LTZ Cheyenne C20
Irish_Alley
Tim
Global Moderator
Senior Member
Posts: 13319
Family is not an important thing. It's everything.
Re: Gauge issues
«
Reply #6 on:
January 02, 2015, 11:54:11 PM »
what ops are you using?
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
19kflo80
Newbie
Posts: 10
Newbie
Re: Gauge issues
«
Reply #7 on:
January 02, 2015, 11:58:56 PM »
By the filter
Logged
1984 CUCV, 350tbi, th400, NP208, dana 60, 14bolt FF, 6" springs front, shackle flip rear, 38.5x15/ 16.5 Boggers
Irish_Alley
Tim
Global Moderator
Senior Member
Posts: 13319
Family is not an important thing. It's everything.
Re: Gauge issues
«
Reply #8 on:
January 03, 2015, 12:02:08 AM »
no, i mean which sender for what engine
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
19kflo80
Newbie
Posts: 10
Newbie
Re: Gauge issues
«
Reply #9 on:
January 03, 2015, 01:57:50 PM »
The sender that was on my tbi
Logged
1984 CUCV, 350tbi, th400, NP208, dana 60, 14bolt FF, 6" springs front, shackle flip rear, 38.5x15/ 16.5 Boggers
Irish_Alley
Tim
Global Moderator
Senior Member
Posts: 13319
Family is not an important thing. It's everything.
Re: Gauge issues
«
Reply #10 on:
January 03, 2015, 04:02:42 PM »
What's the one on the TBI look like?
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
Irish_Alley
Tim
Global Moderator
Senior Member
Posts: 13319
Family is not an important thing. It's everything.
Re: Gauge issues
«
Reply #11 on:
January 03, 2015, 05:19:36 PM »
http://www.autozone.com/internal-engine/oil-pressure-switch/duralast-oil-pressure-switch/18884_828386_9275_5673/
this is the one for the tbi this one is for 60 psi
http://www.autozone.com/internal-engine/oil-pressure-switch/duralast-oil-pressure-switch/123935_709834_8450/
this is the one for the 6.2 this one is for 80 psi
idk if they are interchangeable.
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
19kflo80
Newbie
Posts: 10
Newbie
Re: Gauge issues
«
Reply #12 on:
January 03, 2015, 10:25:45 PM »
I got the 60psi( stamped on the sender). Would a bad sender cause the needle to peg far right? Or just an open ground? Temp gauge works though, so im thinking ground is good.
Logged
1984 CUCV, 350tbi, th400, NP208, dana 60, 14bolt FF, 6" springs front, shackle flip rear, 38.5x15/ 16.5 Boggers
Irish_Alley
Tim
Global Moderator
Senior Member
Posts: 13319
Family is not an important thing. It's everything.
Re: Gauge issues
«
Reply #13 on:
January 04, 2015, 12:31:25 AM »
unhook it and see what it does, then ground the plug out
«
Last Edit: January 04, 2015, 12:41:00 AM by Irish_Alley
»
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
Irish_Alley
Tim
Global Moderator
Senior Member
Posts: 13319
Family is not an important thing. It's everything.
Re: Gauge issues
«
Reply #14 on:
January 04, 2015, 12:32:21 AM »
i just dont know if you can mix senders of certain years to gauges of others. maybe bd can chime in
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
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Problem Solved:: Gauge issues