6.2 Woes - Diesel Place : Chevrolet and GMC Diesel Truck Forums

JLanzino · 02-04-2013, 11:19 AM

Hi all, finally purchased my 91 6.2 J Code, issues so far: block heater sounds like its working but still cold, gauges don't work and the alternator not charging

Thanks guys

JLanzino · 02-04-2013, 02:13 PM

Any one here have a 6.2 Wiring diagram?

legendman · 02-04-2013, 02:18 PM

Check here

wiring diagram?

Turbonator posted up some links a few days ago for someone else

JLanzino · 02-04-2013, 04:23 PM

read the link, I started playing around with the gauges and noticed that the Gauge Fuse keeps blowing once the key is turned for glowplugs, so once 12V hits the fuse it blows!

What do you guys think the issue behind it could be?

happypunch · 02-04-2013, 04:28 PM

must be a short somewhere. maybe a dumb question, but are you using the correct size fuse?

JLanzino · 02-04-2013, 04:29 PM

Yes sir 20 amp

happypunch · 02-04-2013, 04:36 PM

Only time I had fuses blow immediately was when pulling a haunted boat trailer with bad grounds. That was a fun trip, had to stick over sized fuses in just to get home in the dark.

JLanzino · 02-04-2013, 04:57 PM

I wonder if any one here has a wiring diagram of where the wires are comming from into the fuse panel?

JLanzino · 02-04-2013, 07:03 PM

Quote:

Originally Posted by JLanzino

read the link, I started playing around with the gauges and noticed that the Gauge Fuse keeps blowing once the key is turned for glowplugs, so once 12V hits the fuse it blows!

What do you guys think the issue behind it could be?

Forgot to mention, I pulled out the actual gauge cluster (I have the RPM Gauge Panel) and grounded the Cab to the battery made no difference, fuse still blew

Where to start

sctrailrider · 02-04-2013, 07:25 PM

I have several GM shop books, I will look and see what I can find and post it up....

The rpm's come from the alt, unplug all wires from it and try another fuze while I look for a diagram...

02-04-2013, 11:19 AM	#1 (permalink)
JLanzino Diesel Specialist Join Date: Mar 2009 Location: Ontario Canada Posts: 692 View Photos By: JLanzino iTrader Score: 0 reviews Ontario Diesel Place Chapter Member Old School Oil Burners (Old SOBs) Member	6.2 Woes Hi all, finally purchased my 91 6.2 J Code, issues so far: block heater sounds like its working but still cold, gauges don't work and the alternator not charging Thanks guys Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 6.2L C-Code Detroit Diesel, 700R4 Transmission, Rear Wheel Drive, 1`000`000 Km & Counting All Original My Garage 1991 GMC Sierra 2500 SL 3/4 Ton Regular Cab, Long Box, 6.2L J-Code Detroit Diesel, 4L80E Transmission, 4X4, 556`000KM 1994 GMC Sierra 3500 SLE 1 Ton Crew Cab, Long Box, Dually, 6.5L F-Code Detroit Turbo Diesel, 4L80E Transmission, 4X4, 383`000KM 1988 GMC Sierra 1500 SL 1/2 Ton Extended Cab, Long Box, 5.0L H Code, TH400 (3L80) Transmission, Rear Wheel Drive, 306`000Km & Counting 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 5.7L, 700R4 Transmission, Rear Wheel Drive, 255`000KM Proud Member # 992 Of The 3500 Dually Club, # 40 Of The Old SOBs, # 117 The Regular Cab Club, Member Of The ODPC Proud Fan Of The Montreal Canadiens
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02-04-2013, 02:13 PM	#2 (permalink)
JLanzino Diesel Specialist Join Date: Mar 2009 Location: Ontario Canada Posts: 692 View Photos By: JLanzino iTrader Score: 0 reviews Ontario Diesel Place Chapter Member Old School Oil Burners (Old SOBs) Member	Any one here have a 6.2 Wiring diagram? Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 6.2L C-Code Detroit Diesel, 700R4 Transmission, Rear Wheel Drive, 1`000`000 Km & Counting All Original My Garage 1991 GMC Sierra 2500 SL 3/4 Ton Regular Cab, Long Box, 6.2L J-Code Detroit Diesel, 4L80E Transmission, 4X4, 556`000KM 1994 GMC Sierra 3500 SLE 1 Ton Crew Cab, Long Box, Dually, 6.5L F-Code Detroit Turbo Diesel, 4L80E Transmission, 4X4, 383`000KM 1988 GMC Sierra 1500 SL 1/2 Ton Extended Cab, Long Box, 5.0L H Code, TH400 (3L80) Transmission, Rear Wheel Drive, 306`000Km & Counting 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 5.7L, 700R4 Transmission, Rear Wheel Drive, 255`000KM Proud Member # 992 Of The 3500 Dually Club, # 40 Of The Old SOBs, # 117 The Regular Cab Club, Member Of The ODPC Proud Fan Of The Montreal Canadiens
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02-04-2013, 02:18 PM	#3 (permalink)
legendman Diesel Master Join Date: Aug 2008 Location: Oakdale, CT Posts: 3,406 iTrader Score: 0 reviews Old School Oil Burners (Old SOBs) Member CT Smoke Member	Check here wiring diagram? Turbonator posted up some links a few days ago for someone else Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 82 K30 6.2 TH400, in a lot of pieces .... the restoration begins. Getting a 6bt /47rh swap Restoration thread http://www.dieselplace.com/forum/showthread.php?t=414730 84 K20 6.2 4sp (~~The parts truck~~) ~~Plow truck~~ Parts truck for sure now already started ripping it apart. Parts truck thread http://www.dieselplace.com/forum/showthread.php?t=434338 84 C10 SB Low rider thread http://www.dieselplace.com/forum/sho...light=lowrider Sold 2003 Vdub Golf TDi my DD car averaging 45 mpg
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02-04-2013, 04:23 PM	#4 (permalink)
JLanzino Diesel Specialist Join Date: Mar 2009 Location: Ontario Canada Posts: 692 View Photos By: JLanzino iTrader Score: 0 reviews Ontario Diesel Place Chapter Member Old School Oil Burners (Old SOBs) Member	read the link, I started playing around with the gauges and noticed that the Gauge Fuse keeps blowing once the key is turned for glowplugs, so once 12V hits the fuse it blows! What do you guys think the issue behind it could be? Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 6.2L C-Code Detroit Diesel, 700R4 Transmission, Rear Wheel Drive, 1`000`000 Km & Counting All Original My Garage 1991 GMC Sierra 2500 SL 3/4 Ton Regular Cab, Long Box, 6.2L J-Code Detroit Diesel, 4L80E Transmission, 4X4, 556`000KM 1994 GMC Sierra 3500 SLE 1 Ton Crew Cab, Long Box, Dually, 6.5L F-Code Detroit Turbo Diesel, 4L80E Transmission, 4X4, 383`000KM 1988 GMC Sierra 1500 SL 1/2 Ton Extended Cab, Long Box, 5.0L H Code, TH400 (3L80) Transmission, Rear Wheel Drive, 306`000Km & Counting 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 5.7L, 700R4 Transmission, Rear Wheel Drive, 255`000KM Proud Member # 992 Of The 3500 Dually Club, # 40 Of The Old SOBs, # 117 The Regular Cab Club, Member Of The ODPC Proud Fan Of The Montreal Canadiens
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02-04-2013, 04:28 PM	#5 (permalink)
happypunch Diesel Master Join Date: May 2011 Location: Boise, ID Posts: 1,425 iTrader Score: 0 reviews Old School Oil Burners (Old SOBs) Member	must be a short somewhere. maybe a dumb question, but are you using the correct size fuse? Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 1987 V20 Suburban 6.2 diesel gm-3 turbo ~~th350~~ 700r4 np208 3.73's 237,000 miles. Brought it back from the dead but still a work in progress!!
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02-04-2013, 04:29 PM	#6 (permalink)
JLanzino Diesel Specialist Join Date: Mar 2009 Location: Ontario Canada Posts: 692 View Photos By: JLanzino iTrader Score: 0 reviews Ontario Diesel Place Chapter Member Old School Oil Burners (Old SOBs) Member	Yes sir 20 amp Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 6.2L C-Code Detroit Diesel, 700R4 Transmission, Rear Wheel Drive, 1`000`000 Km & Counting All Original My Garage 1991 GMC Sierra 2500 SL 3/4 Ton Regular Cab, Long Box, 6.2L J-Code Detroit Diesel, 4L80E Transmission, 4X4, 556`000KM 1994 GMC Sierra 3500 SLE 1 Ton Crew Cab, Long Box, Dually, 6.5L F-Code Detroit Turbo Diesel, 4L80E Transmission, 4X4, 383`000KM 1988 GMC Sierra 1500 SL 1/2 Ton Extended Cab, Long Box, 5.0L H Code, TH400 (3L80) Transmission, Rear Wheel Drive, 306`000Km & Counting 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 5.7L, 700R4 Transmission, Rear Wheel Drive, 255`000KM Proud Member # 992 Of The 3500 Dually Club, # 40 Of The Old SOBs, # 117 The Regular Cab Club, Member Of The ODPC Proud Fan Of The Montreal Canadiens
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02-04-2013, 04:36 PM	#7 (permalink)
happypunch Diesel Master Join Date: May 2011 Location: Boise, ID Posts: 1,425 iTrader Score: 0 reviews Old School Oil Burners (Old SOBs) Member	Only time I had fuses blow immediately was when pulling a haunted boat trailer with bad grounds. That was a fun trip, had to stick over sized fuses in just to get home in the dark. Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 1987 V20 Suburban 6.2 diesel gm-3 turbo ~~th350~~ 700r4 np208 3.73's 237,000 miles. Brought it back from the dead but still a work in progress!!
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02-04-2013, 04:57 PM	#8 (permalink)
JLanzino Diesel Specialist Join Date: Mar 2009 Location: Ontario Canada Posts: 692 View Photos By: JLanzino iTrader Score: 0 reviews Ontario Diesel Place Chapter Member Old School Oil Burners (Old SOBs) Member	I wonder if any one here has a wiring diagram of where the wires are comming from into the fuse panel? Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 6.2L C-Code Detroit Diesel, 700R4 Transmission, Rear Wheel Drive, 1`000`000 Km & Counting All Original My Garage 1991 GMC Sierra 2500 SL 3/4 Ton Regular Cab, Long Box, 6.2L J-Code Detroit Diesel, 4L80E Transmission, 4X4, 556`000KM 1994 GMC Sierra 3500 SLE 1 Ton Crew Cab, Long Box, Dually, 6.5L F-Code Detroit Turbo Diesel, 4L80E Transmission, 4X4, 383`000KM 1988 GMC Sierra 1500 SL 1/2 Ton Extended Cab, Long Box, 5.0L H Code, TH400 (3L80) Transmission, Rear Wheel Drive, 306`000Km & Counting 1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 5.7L, 700R4 Transmission, Rear Wheel Drive, 255`000KM Proud Member # 992 Of The 3500 Dually Club, # 40 Of The Old SOBs, # 117 The Regular Cab Club, Member Of The ODPC Proud Fan Of The Montreal Canadiens
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02-04-2013, 07:25 PM	#10 (permalink)
sctrailrider Diesel Specialist Join Date: Dec 2010 Location: Pauline,SC Posts: 982 iTrader Score: 0 reviews Old School Oil Burners (Old SOBs) Member	I have several GM shop books, I will look and see what I can find and post it up.... The rpm's come from the alt, unplug all wires from it and try another fuze while I look for a diagram... Share Share this post on Digg Del.icio.us Technorati Twitter Add this post to your Facebook Profile Add this post to MySpace Stumble this Post! Google Bookmark this Post! Live Bookmark this Post! __________________ 1991 GMC K2500 SLX GEP 18:1 3.73 gear, Hellwig air bags NV4500 tranny More not listed... Last edited by sctrailrider; 02-04-2013 at 07:28 PM.
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