1993 6.5 TD... Lift pump power question - Page 5 - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Lounge (0) Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > GM Diesel Engines > 6.5L Diesel Engine
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Auto EscrowAuto LoansInsurance

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 11-16-2012, 05:24 PM   #41 (permalink)
94C1500
Diesel Master
 
94C1500's Avatar
 
Join Date: Mar 2009
Posts: 2,703
iTrader Score: 1 reviews

Congrats on getting it started, some clean up maintenance to do, but at least its running. In the end you may have to abandon the LP relay in place and just run your own wires to a known good relay. You could add either add a priming button in the cab or wire up the system to run while the glow plugs are on.
__________________
1994 C1500 - 4L80E & 3.42 rear; Custom Multi-Program Chip; L65 intake; "FTB", Walbro FRC-10 lift pump, pre-LP fuel filter & OPS relay mod; D-Tech FSD on heatsink; Big Turbo, 4" to 5" exhaust exits before axle, Cone air filter; "marine" injectors. Propane fumigation and WMI.
ENGINE DESIGN CALCULATORS
LIST OF RECOMMENDED MNX & MODS
HX40 or HX35 V-Band Exhaust Elbows
Offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-20-2012, 04:26 PM   #42 (permalink)
jlwade
Diesel Head
 
jlwade's Avatar
 
Join Date: Apr 2012
Location: San Antonio, TX
Posts: 46
iTrader Score: 0 reviews

94C > Thanks for the congrats. J

When I got it running I let it run for a while (no driving, just idle) hoping to maybe charge the batteries. After about 45 minutes I shut it off. Tried to restart. No go. Batteries didnít charge. Had to do the darn jump again and I had to drive it down the road to the auto parts store (I had a strong feeling batteries were gonzo) But I hoped that the drive might charge . Got to parts store. Turned it off. Tried to restart. Nope. Batteries were toast. Went in and bought 2 new batteries and did it right there in parking lot. Now truck starts up with no problem. But I am not thrilled about driving down the road with the LP on a direct connection. I am driving the least I can right now till I figure this all out. And I found something today that wasnít this way when it died.

If I am running this LP on a direct connectÖ what is this thing that my finger is pointing to that is now melting? Now I have something new to fix and I donít know what this is.

Some more help please.
Attached Thumbnails
1993 6.5 TD... Lift pump power question-img_20121120_141826.jpg   1993 6.5 TD... Lift pump power question-img_20121120_141838.jpg   1993 6.5 TD... Lift pump power question-img_20121120_141858.jpg   1993 6.5 TD... Lift pump power question-img_20121120_141940.jpg  
__________________
BIG RED 93 K3500 6.5 Turbo Diesel 5 speed 4X4 crew cab with long bed.

Rigged for bumper pull and gooseneck ball hookup.
She is a workin girl. and she does it very well. She not all that pretty but then again if she were pretty... she wouldn't be a truck. She is a big girl and she got her big girl pants on and wearing her color beautifully.

RUBI 1999 Jeep Wrangler/Rubicon Sport 4X4 4.0L 6 cyl ragtop and half soft side doors. 3 inch lift. ball hitch in rear. and she can haul with the best of them.

She is dressed to play and she plays dirty. Loves to go topless and is a flasher. She may be covered in dirt and mud but she wears it well. Her good looks come shining through.

Jack of all trades... master of some... Leader of the roost.
Offline   Reply With Quote
Old 11-20-2012, 07:53 PM   #43 (permalink)
jlwade
Diesel Head
 
jlwade's Avatar
 
Join Date: Apr 2012
Location: San Antonio, TX
Posts: 46
iTrader Score: 0 reviews

Hi guys…

Ok… be proud of me. I got some things figured out. I did a lot more searching and reading here throughout the threads. Now that I understand a lot more than what I did before, in my pic #2 of the LP relay thingy, I figured out which ones you jump to run the LP. Looking at pic…
Top left – top right

Center

Bottom left – bottom right

Center and bottom right are the ones to jumper to run the LP. Now which one is A or E I not sure but when I put test light to both, bottom right lit up so I am guessing that one is ground. I got no lite up with the center either way on the test. Did also learn that the fuse DOES have to be in… I think I had a bad fues before. It looked good but probably a unseen break in there.

I also discovered a slight fuel leak down near the LP. So I gotta check the lines. How expensive are fuel lines?

Don’t need to know where the glow relay is now but please still let me know for whatever future dealings I might have to do.

Now to make sure I got this right… To check to see of the OPS is working…

Engine running.
LP running.
Open T – valve.
Fuel should run out (and I know it does)
If engine acts like it is choking and wanting to die (run out of gas so to speak) the OPS is not working properly. Did I get that right?

On the thing that is melting… is that my water temp gauge/sensor? If not then please tell me what it is. I was told that that is what it is but I don’t put much faith in the resource that info came from.

Well gotta run for the moment. I got a couple more questions but got interrupted by the kids and now have lost all train of thought… LOL

So for now that what I needs to know for now.

Thank You so much again guys for all your info and help.
__________________
BIG RED 93 K3500 6.5 Turbo Diesel 5 speed 4X4 crew cab with long bed.

Rigged for bumper pull and gooseneck ball hookup.
She is a workin girl. and she does it very well. She not all that pretty but then again if she were pretty... she wouldn't be a truck. She is a big girl and she got her big girl pants on and wearing her color beautifully.

RUBI 1999 Jeep Wrangler/Rubicon Sport 4X4 4.0L 6 cyl ragtop and half soft side doors. 3 inch lift. ball hitch in rear. and she can haul with the best of them.

She is dressed to play and she plays dirty. Loves to go topless and is a flasher. She may be covered in dirt and mud but she wears it well. Her good looks come shining through.

Jack of all trades... master of some... Leader of the roost.
Offline   Reply With Quote
Old 11-20-2012, 08:40 PM   #44 (permalink)
racer55
6.5TD Post Addict
 
racer55's Avatar
 
Join Date: Jul 2010
Location: Scugog Island Ontario Canada
Posts: 9,442
iTrader Score: 0 reviews

Ontario Diesel Place Chapter Member

Old School Oil Burners (Old SOBs) Member

Quote:
Originally Posted by jlwade View Post
Hi guys…

Ok… be proud of me. I got some things figured out. I did a lot more searching and reading here throughout the threads. Now that I understand a lot more than what I did before, in my pic #2 of the LP relay thingy, I figured out which ones you jump to run the LP. Looking at pic…
Top left – top right

Center

Bottom left – bottom right

Center and bottom right are the ones to jumper to run the LP. Now which one is A or E I not sure but when I put test light to both, bottom right lit up so I am guessing that one is ground. I got no lite up with the center either way on the test. Did also learn that the fuse DOES have to be in… I think I had a bad fues before. It looked good but probably a unseen break in there.

I also discovered a slight fuel leak down near the LP. So I gotta check the lines. How expensive are fuel lines?

Don’t need to know where the glow relay is now but please still let me know for whatever future dealings I might have to do.

Now to make sure I got this right… To check to see of the OPS is working…

Engine running.
LP running.
Open T – valve.
Fuel should run out (and I know it does)
If engine acts like it is choking and wanting to die (run out of gas so to speak) the OPS is not working properly. Did I get that right?

On the thing that is melting… is that my water temp gauge/sensor? If not then please tell me what it is. I was told that that is what it is but I don’t put much faith in the resource that info came from.

Well gotta run for the moment. I got a couple more questions but got interrupted by the kids and now have lost all train of thought… LOL

So for now that what I needs to know for now.

Thank You so much again guys for all your info and help.
Depends on where you put the clip end of the test light when you look for power or ground.

If the clip end is on a ground source and you probe a terminal and the light lights up you have found power.

If you put the clip end on power and probe a terminal and the light lights up-you have found ground.

Glow relay should be mounted to studs at the firewall end of the engine on the drivers side.

Yes you have the LP test correct,except you have only determined that the LP is not working if it acts like it is running out of fuel-it takes a little more diagnosis to figure out if the OPS is the cause.
__________________
No longer a 6.5 owner
2005 Chev K3500 CCLB Dmax

Diagnostic Checklist 2.0
OBD1 Codes
OBD2 Codes
6.5 FAQ
Carcode & TDCO Instructions

Last edited by racer55; 11-20-2012 at 08:43 PM.
Offline   Reply With Quote
Old 11-20-2012, 09:42 PM   #45 (permalink)
jlwade
Diesel Head
 
jlwade's Avatar
 
Join Date: Apr 2012
Location: San Antonio, TX
Posts: 46
iTrader Score: 0 reviews

LOL... I knew what I wanted to say but you said it best... on the test lite thingy.
This is results I got with lite test.
Clip clipped to hot…

Top left = Lite, Top right = no lite
Center = weak lite
Bottom left = Lite, Bottom right = no lite

Clip clipped to ground...

Top left = no lite, Top right = no lite
Center = no lite
Bottom left = no lite, Bottom right = lite

This is what I did and the results I got when I did LP test.

LP direct jumper connect. Started engine and it started normal. Engine running. Opened T-valve and got fuel flow out. No stalling or choking of thirst. Ran normal.

LP connected the way it is supposed to be with relay. Started engine and it fired right up. Better than the direct connect start. Engine running. Opened T-valve and got NO fuel flow out. But also got NO stalling or choking of thirst. Ran normal.

Ok so what do these results tell me?

Thank You
__________________
BIG RED 93 K3500 6.5 Turbo Diesel 5 speed 4X4 crew cab with long bed.

Rigged for bumper pull and gooseneck ball hookup.
She is a workin girl. and she does it very well. She not all that pretty but then again if she were pretty... she wouldn't be a truck. She is a big girl and she got her big girl pants on and wearing her color beautifully.

RUBI 1999 Jeep Wrangler/Rubicon Sport 4X4 4.0L 6 cyl ragtop and half soft side doors. 3 inch lift. ball hitch in rear. and she can haul with the best of them.

She is dressed to play and she plays dirty. Loves to go topless and is a flasher. She may be covered in dirt and mud but she wears it well. Her good looks come shining through.

Jack of all trades... master of some... Leader of the roost.
Offline   Reply With Quote
Old 11-20-2012, 09:58 PM   #46 (permalink)
GM Guy
Diesel Specialist
 
GM Guy's Avatar
 
Join Date: Mar 2007
Location: NW Kansas
Posts: 983
iTrader Score: 2 reviews

I think that would tell us the oil pressure switch is bad, or the related wiring.

if you are familiar wit purchasing parts off of the internet, then rockauto.com is a good place to get an oil pressure switch. make sure to get an ac delco brand only. if online shopping isnt your cup of tea, I suggest going to a reputable GM dealer and getting one. if it isnt around 50 bucks or less, find a new one. this isnt a terribly expensive part.

the leak at the lift pump could be the little o-rings in the connectors have gone to crap. no big deal, buy new o-rings. a good GM dealer should be able to help you. both o-rings should be less than 3 bucks from GM.

as far as the melting connector, I think that is the switch that controls the advance solenoid on the pump in cooler weather. not essential to operation, but I am concerned as to why it is melting. a good fire extinguisher may be a good thing to carry?

good luck, and glad to hear another 93 6.5L 5spd is up and running!
__________________
99 Chev C3500 6.5L NV4500 4.10 130K
96 GMC C2500HD 6.5L NV4500 3.73 240K
95 GMC C2500HD 6.5L NV4500 4.10 135K
95 Chev C3500HD 6.5L NV4500 5.13 132K 159.5" WB
95 Chev C3500HD 6.5L NV4500 5.13? 170K? 135.5" WB
94 GMC C2500HD Burb 6.5L 4L80E 3.73 300K
93 Chev K2500HD 6.5L NV4500 4.10 252K
91 GMC C1500, 6.2L SM465 2wd 3.42 59K
91 Chev C1500 4.3L 5LM60 2wd 3.42 ??K


Proud Member: #123 of the Brotherhood of Handshakers; #703 of the 3500 Dually Club
See other forum for complete signature
Offline   Reply With Quote
Old 11-20-2012, 11:22 PM   #47 (permalink)
FloridaHorseman
Diesel Master
 
FloridaHorseman's Avatar
 
Join Date: May 2011
Location: Lakeland, FL
Posts: 3,203
iTrader Score: 0 reviews

I believe the melted connection is the ECT. You need to check that with a voltmeter. It should have no more than 5v DC on it with the key ON. It may also be the original ECT and no longer available as a replacement part. That means upgrading to the new style ECT. The only thing different is the connector plug. The new plug pigtail is more expensive than the sensor. A trip to the junkyard will save you some $$$. The 2 wire ECT connector from any '94 & up GM V8, gas or diesel, should work.

Warning: the old ECT may fall apart when you put a wrench on it. If so, you may have to remove the whole front coolant crossover and have a shop get what remains of the old ECT out. ~FH
__________________

1994 Chevy K1500 Z71, 6.5L TD 145,000 miles, bumper mount PMD, LP relay mod, filter sock delete -SOLD-
1998 Chevy K3500, 454 horse hauler , 175,000 miles, tuned flow-through exhaust, pillar gauges (vac, trans temp, volts), electric cooling fans, external trans cooler & fan, manual TCC lockup mod, limo tint, front & rear brush guards, B&W G/N flip hitch, spray-in bed liner, chrome wheel inserts


Engine "No Start" Checklist
Diagnostic Checklist
OBD1 Trouble Codes
OBD2 Trouble Codes

Last edited by FloridaHorseman; 11-20-2012 at 11:22 PM.
Offline   Reply With Quote
Old 11-20-2012, 11:41 PM   #48 (permalink)
GM Guy
Diesel Specialist
 
GM Guy's Avatar
 
Join Date: Mar 2007
Location: NW Kansas
Posts: 983
iTrader Score: 2 reviews

also, FWIW, my 96 and up trucks all run the LP with key on, my 95 and older trucks (all the way back to my 91 GMC) key on gets you nothing, some,(need to keep track which ones) run the LP on crank, and the rest have to wait till the OPS says its go-time. I know my 91 GMC has to wait on the OPS, so maybe my relay is bad as well.
__________________
99 Chev C3500 6.5L NV4500 4.10 130K
96 GMC C2500HD 6.5L NV4500 3.73 240K
95 GMC C2500HD 6.5L NV4500 4.10 135K
95 Chev C3500HD 6.5L NV4500 5.13 132K 159.5" WB
95 Chev C3500HD 6.5L NV4500 5.13? 170K? 135.5" WB
94 GMC C2500HD Burb 6.5L 4L80E 3.73 300K
93 Chev K2500HD 6.5L NV4500 4.10 252K
91 GMC C1500, 6.2L SM465 2wd 3.42 59K
91 Chev C1500 4.3L 5LM60 2wd 3.42 ??K


Proud Member: #123 of the Brotherhood of Handshakers; #703 of the 3500 Dually Club
See other forum for complete signature
Offline   Reply With Quote
Old 11-20-2012, 11:50 PM   #49 (permalink)
jlwade
Diesel Head
 
jlwade's Avatar
 
Join Date: Apr 2012
Location: San Antonio, TX
Posts: 46
iTrader Score: 0 reviews

Ok… So I am guessing it is good to say that my OPS is bad??? I’m going to replace it regardless anyways but just for my reference and remembrance.
ECT… got to look that up in the glossary on here… LOL
It looks like it melted from inside out. So the thing just ended up going bad. That’s what someone told me anyways. You tell me if that can be true please.

I’ll shop around and price compare on the OPS. Advance Auto sells AC Delco. And I’ll definitely check rockauto.

Any particular brand you recommend for the LP Relay?

What size OPS socket do I need to get for my OPS? I’ve seen different sizes (deep well n shallow well) but I don’t know the size of the OPS yet to know which one.

Thanks again.
__________________
BIG RED 93 K3500 6.5 Turbo Diesel 5 speed 4X4 crew cab with long bed.

Rigged for bumper pull and gooseneck ball hookup.
She is a workin girl. and she does it very well. She not all that pretty but then again if she were pretty... she wouldn't be a truck. She is a big girl and she got her big girl pants on and wearing her color beautifully.

RUBI 1999 Jeep Wrangler/Rubicon Sport 4X4 4.0L 6 cyl ragtop and half soft side doors. 3 inch lift. ball hitch in rear. and she can haul with the best of them.

She is dressed to play and she plays dirty. Loves to go topless and is a flasher. She may be covered in dirt and mud but she wears it well. Her good looks come shining through.

Jack of all trades... master of some... Leader of the roost.
Offline   Reply With Quote
Old 11-20-2012, 11:59 PM   #50 (permalink)
jlwade
Diesel Head
 
jlwade's Avatar
 
Join Date: Apr 2012
Location: San Antonio, TX
Posts: 46
iTrader Score: 0 reviews

GM > FWIW???

OOPS on your OPS... Hope not for you. Looks like you've worked on a few differant year models so I am sure it can get confusing. I know it has been for me especially in the begining but I am doing good and learning it well for 1 year model anyways...lol

I think mine runs at crank over. Of course I have nothing when the glow plugs are cycling. I don't turn the engine till they do their cycle first. Before my truck completely died I was told that I should hear the LP just before cranking it. But I don't know which way for my truck yet. But I am sure I will be knowing that for posative here soon... LOL

Thanks for all your info and help. Keep it coming.
__________________
BIG RED 93 K3500 6.5 Turbo Diesel 5 speed 4X4 crew cab with long bed.

Rigged for bumper pull and gooseneck ball hookup.
She is a workin girl. and she does it very well. She not all that pretty but then again if she were pretty... she wouldn't be a truck. She is a big girl and she got her big girl pants on and wearing her color beautifully.

RUBI 1999 Jeep Wrangler/Rubicon Sport 4X4 4.0L 6 cyl ragtop and half soft side doors. 3 inch lift. ball hitch in rear. and she can haul with the best of them.

She is dressed to play and she plays dirty. Loves to go topless and is a flasher. She may be covered in dirt and mud but she wears it well. Her good looks come shining through.

Jack of all trades... master of some... Leader of the roost.
Offline   Reply With Quote
Sponsored Links
Advertisement
 
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
6.5L 1993 Lift Pump puzzle amccom 6.5L Diesel Engine 11 04-26-2010 05:51 PM
More newbie 1993 6.5 lift pump / OPS questions... MacRackman 6.5L Diesel Engine 3 12-02-2009 09:43 AM
Major technical help to find 1993 lift pump relay drive wire? Wa_rWagon 6.5L Diesel Engine 3 11-05-2009 11:48 PM
1993 Lift pump INOP on key on, crank. Wa_rWagon 6.5L Diesel Engine 10 11-05-2009 12:26 PM
Fuel pump relay on 1993; quick question Shane_WY 6.5L Diesel Engine 7 04-20-2007 10:23 PM


All times are GMT -4. The time now is 05:01 PM.


Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide

SEO by vBSEO 3.6.0