Duramax Diesels Forum Truck of the Week
  #1  
Old 11-07-2019, 07:49 AM
036.6turbo 036.6turbo is online now
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Default $250 Hoe

Co-worker tells me his Daughter's truck puked the transmission. Says it's been sitting in his driveway since February, she joined the Navy, no longer wants or needs the truck.

He wants it gone out of his driveway. Asks if I want it? I ask "how much do you want for it?", he says "nothing, I just want it gone!" I press the issue, he says just bring me a case of beer!

So I figured what the heck. I pick up a few cases of beer and go pick it up. Here are the particulars;
1. 1998 Chevrolet Tahoe.
2. 209,000 miles showing on the odometer.
3. The guy my friend bought it from had a dealer install a crate engine at 159,000 miles.
4. Fresh battery gets it to start, but you have to hold the accelerator pedal down to get it to start.
5. No reverse, second or fourth gears in the transmission.
6. No MILs on the dash, I have not plugged in to look for any other stored codes.

Plan is to get it running a driving, then park my LML during the winter, to try and limit its exposure to road salt.


So far I have $50 into a reman battery, $175 into a known good 4L60E transmission from a 98 Suburban. And the beer money, which all adds up to more than $250, but $250 Hoe just has a ring to it.

My question is the fact that I have to hold down the accelerator to get it to start. What do you guys think, FPR or fuel pump? Once it starts it purrs like a kitten.
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  #2  
Old 11-07-2019, 08:32 AM
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TheBac TheBac is offline
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..and here I get a cab and frame for that price and think I did really well. Nice buy!


'98 drive by wire or cable? I forget.
Id think fuel pump off the bat, but hooking up a fuel pressure gauge will tell the tale.
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Old 11-07-2019, 08:50 AM
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Chevy1925 Chevy1925 is offline
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should be drive by cable, tom

Nice score! i almost thought it was a spam post till i looked who posted it and opened the thread!
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Old 11-07-2019, 08:51 AM
036.6turbo 036.6turbo is online now
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Quote:
Originally Posted by TheBac View Post
..and here I get a cab and frame for that price and think I did really well. Nice buy!


'98 drive by wire or cable? I forget.
Id think fuel pump off the bat, but hooking up a fuel pressure gauge will tell the tale.
It's a cable. I get a pressure gauge kit and check it out.

Yeah, it was an "out of the blue" kind of thing.

I mean scrap value is a couple hundred bucks, but for that, I wasn't interested. Two cases of beer? Sure.
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2003 GMC Sierra CCSB.
LBZ / Six speed / EGR Delete / DSP5 with tuning from Idaho Rob @ ATP Trucks / Bilstein 5100s / Air Ride 5000 bags / Merchant Reman Tcase / TNR head unit.

2015.5 Denali. Dmax Allison / Exergy Sportsman CP3 / WCFab "Y" Bridge with cold air bundle / WCFab 3" downpipe / LB7 up pipe / 4" Flo Pro exhaust / FASS 150 / Sump / AirLift 5000 bags with WirelessOne on board air / B&W Turnover ball / AMP Research power steps.
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  #5  
Old 11-07-2019, 08:58 AM
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Awesome score!!! I love that obs style
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  #6  
Old 11-07-2019, 09:08 AM
036.6turbo 036.6turbo is online now
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Quote:
Originally Posted by Chevy1925 View Post
should be drive by cable, tom

Nice score! i almost thought it was a spam post till i looked who posted it and opened the thread!
Thank you! Just a bit off color.

Quote:
Originally Posted by zakkb787 View Post
Awesome score!!! I love that obs style
Thanks! Yeah, I've owned a few before, brings back memories.
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2003 GMC Sierra CCSB.
LBZ / Six speed / EGR Delete / DSP5 with tuning from Idaho Rob @ ATP Trucks / Bilstein 5100s / Air Ride 5000 bags / Merchant Reman Tcase / TNR head unit.

2015.5 Denali. Dmax Allison / Exergy Sportsman CP3 / WCFab "Y" Bridge with cold air bundle / WCFab 3" downpipe / LB7 up pipe / 4" Flo Pro exhaust / FASS 150 / Sump / AirLift 5000 bags with WirelessOne on board air / B&W Turnover ball / AMP Research power steps.
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Old 11-07-2019, 09:09 AM
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Quote:
Originally Posted by Chevy1925 View Post
Nice score! i almost thought it was a spam post till i looked who posted it and opened the thread!
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  #8  
Old 11-07-2019, 09:27 AM
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Quote:
Originally Posted by 036.6turbo View Post
Thank you! Just a bit off color.



Thanks! Yeah, I've owned a few before, brings back memories.
Hate working on them. Love to look.
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2006 LLY CC/SB LT3 black, charcoal interior, tuned, leveled on 33s, my little piece of heaven

Other toys:
1982 K10 6.2 Detroit diesel/sm465/np205 with 4 inch lift and 35s.
2011 Yamaha YFZ450X
2018 GasGas XC300
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  #9  
Old 11-08-2019, 01:15 PM
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Tyler_LBZ Tyler_LBZ is offline
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Nice find! I sure miss that body style, had a 99 crew cab I regret selling.

Hope this treats you well for the winter!
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  #10  
Old 11-08-2019, 02:23 PM
036.6turbo 036.6turbo is online now
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Fuel pressure is 60 psi key on, engine off.

Engine on, it drops to 51psi, but jumps up to 60psi when the throttle is stabbed.

I think the fuel pump may be okay.


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2003 GMC Sierra CCSB.
LBZ / Six speed / EGR Delete / DSP5 with tuning from Idaho Rob @ ATP Trucks / Bilstein 5100s / Air Ride 5000 bags / Merchant Reman Tcase / TNR head unit.

2015.5 Denali. Dmax Allison / Exergy Sportsman CP3 / WCFab "Y" Bridge with cold air bundle / WCFab 3" downpipe / LB7 up pipe / 4" Flo Pro exhaust / FASS 150 / Sump / AirLift 5000 bags with WirelessOne on board air / B&W Turnover ball / AMP Research power steps.
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Old 11-09-2019, 12:13 AM
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My guess is flooded engine. Pressing the accelerator all the way down while cranking cut off the injectors allowing the excess fuel to clear. When its at the right A/F ratio it fires.

I suspect one or more leaking injectors. Maybe try a leak down test on the fuel pressure and look for wet spark plugs after cranking (without pressing the throttle)

Also, see what the ecm thinks the air temp is. If its too low (-40 for a bad sensor) it may be flooding it unintentionally
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  #12  
Old 11-09-2019, 05:13 AM
036.6turbo 036.6turbo is online now
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Quote:
Originally Posted by 2004LB7 View Post
My guess is flooded engine. Pressing the accelerator all the way down while cranking cut off the injectors allowing the excess fuel to clear. When its at the right A/F ratio it fires.

I suspect one or more leaking injectors. Maybe try a leak down test on the fuel pressure and look for wet spark plugs after cranking (without pressing the throttle)

Also, see what the ecm thinks the air temp is. If its too low (-40 for a bad sensor) it may be flooding it unintentionally


I agree with your logic, I did leave the fuel pressure gauge attached to the test port yesterday, it held pressure for at least thirty minutes.

Iím still trying to learn how to get my MDI to emulate a tech II, using tech2win. Once again have that figured out, I should be able to do some more in depth diagnoses.


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2003 GMC Sierra CCSB.
LBZ / Six speed / EGR Delete / DSP5 with tuning from Idaho Rob @ ATP Trucks / Bilstein 5100s / Air Ride 5000 bags / Merchant Reman Tcase / TNR head unit.

2015.5 Denali. Dmax Allison / Exergy Sportsman CP3 / WCFab "Y" Bridge with cold air bundle / WCFab 3" downpipe / LB7 up pipe / 4" Flo Pro exhaust / FASS 150 / Sump / AirLift 5000 bags with WirelessOne on board air / B&W Turnover ball / AMP Research power steps.
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  #13  
Old 11-09-2019, 09:43 AM
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Are any plugs wet?
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2006 BRM Jetta TDI. Injectors, turbo, Malone custom tuning on ecm and tcm
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Old 11-09-2019, 09:47 AM
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Oh the lovely spider injection
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2006 LLY CC/SB LT3 black, charcoal interior, tuned, leveled on 33s, my little piece of heaven

Other toys:
1982 K10 6.2 Detroit diesel/sm465/np205 with 4 inch lift and 35s.
2011 Yamaha YFZ450X
2018 GasGas XC300
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  #15  
Old 11-09-2019, 04:07 PM
036.6turbo 036.6turbo is online now
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Quote:
Originally Posted by 2004LB7 View Post
Are any plugs wet?


Actually I think the problem is solved.

Iím a bit embarrassed to admit this, but I think it was a weak battery.

The one I installed when I picked it up from him was just one I had sitting in the shop, I didnít verify it was fully charged.

I trickle charged it over night and now it starts fine. I think there was insufficient voltage to the fuel pump and it couldnít generate 50psi, to fire the injectors.

But it does appear to have a parasitic draw back n the battery that I need to find and correct.


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__________________
2003 GMC Sierra CCSB.
LBZ / Six speed / EGR Delete / DSP5 with tuning from Idaho Rob @ ATP Trucks / Bilstein 5100s / Air Ride 5000 bags / Merchant Reman Tcase / TNR head unit.

2015.5 Denali. Dmax Allison / Exergy Sportsman CP3 / WCFab "Y" Bridge with cold air bundle / WCFab 3" downpipe / LB7 up pipe / 4" Flo Pro exhaust / FASS 150 / Sump / AirLift 5000 bags with WirelessOne on board air / B&W Turnover ball / AMP Research power steps.
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