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09-26-2011, 04:36 PM
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#1 |
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Registered User
Join Date: Aug 2011
Location: Halton Hills, Ontario
Posts: 38
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6.2 service engine soon - no codes????
Like the title says... my service engine soon light has been coming on and going out for a week or so. It cam on for the first time just before i lost the rear brakes. I figured they were related. brakes have been fixed and the truck scanned... No codes came up. The light came on a few times over the weekend. The last time I tapped the dash to be a smart ass and the light went out. I guess I need to make sure it didn't burn out or something. anyone have any thoughts. I was told that the 6.2 Diesels don't really use much of the computer... is this true?
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09-27-2011, 02:46 PM
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#2 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,862
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Re: 6.2 service engine soon - no codes????
Yes,6.2s don't use the computer. Maybe the light is acting up or something with the hydro-boost?
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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09-27-2011, 04:59 PM
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#3 |
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Registered User
Join Date: Aug 2011
Location: Halton Hills, Ontario
Posts: 38
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Re: 6.2 service engine soon - no codes????
Interesting... Any idea how the hydraboost fits in?
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09-30-2011, 02:32 PM
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#4 | |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,925
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Re: 6.2 service engine soon - no codes????
Quote:
The computer doesn't do much on the diesel applications. The TCC engagement is about the only useful function. Glow Inhibit, and HPCA can be run with relays and a temp sensor. EGR can be run on vacuum controls. According to the 1989 R/V schematics The LH6 Diesel ECM Outputs;
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09-30-2011, 02:36 PM
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#5 |
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Registered User
Join Date: Aug 2011
Location: Halton Hills, Ontario
Posts: 38
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Re: 6.2 service engine soon - no codes????
interesting... we have scanned it an no codes with two different mechanics and computers???? will have to see whats the deal. I did notice that it looks like there is some glue where someone tried hiding it with tape at some point
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09-30-2011, 05:04 PM
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#6 | |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,925
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Re: 6.2 service engine soon - no codes????
Quote:
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10-06-2011, 01:29 PM
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#7 |
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Registered User
Join Date: Aug 2011
Location: Halton Hills, Ontario
Posts: 38
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Re: 6.2 service engine soon - no codes????
so i had a broken glow plug and two broken glow plug connectors. The bulb is defiantly burnt out now but still smokes a lot and runs ruff on a cold start
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10-06-2011, 07:30 PM
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#8 |
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Registered User
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
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Re: 6.2 service engine soon - no codes????
the service engine soon really only looks for shorts
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]  1999 k3500 crew cab dually 6.5tdi/4l80e |
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