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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

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Old 09-13-2005, 04:48 PM   #1 (permalink)
CanadianRigger
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WTF is this?

This little box is attached to the harness going to the IP Optic. What is it?? Oop's almost forgot, this is on the 95 Blazer. Soot engine.


I'm also doing my down pipe if i can get it done today, wait till you guys see the old one. OMG, how's it run!

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2000 Chev LS L-65 HO 2500HD 4X4 SB
+92^mm OBDI 5068 IP , 8 sleeves bored 40 over, 18:-?, scat crank, splayed mains, new mystery cam, copper gaskets, Studs, ported, Hi-Pops, Cumins LP, FTB..., PANE, most likely? 6" Pro-Comp Lift, 33" Treads

1996 GMC 4x4 SB "S" - GM-8, 3"DP, 3.5" w/4"stacks, Gutted Plenum, EGR Block Off, Boost/Pyro, Air Bags. 59mm^


94 1500 Z-71 SB 4x4, 5.9L 12V Cummins, 40HP Injectors, 14CC Turbo, NV4500 w/Gear Vendor, Air Bags, Gauges, 4" Exh, Digi-Boost Propane (stolen?), Dual Flexilite Fans, 3" Body Lift, IC up front.
628 ft/lbs TQ, 271 RWHP... for sale!

94 Blazer Sport - Westers Performance Chip for sale in the market place!
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Old 09-13-2005, 04:52 PM   #2 (permalink)
Cowracer
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RF snubber.

Reduces the chance of radio interference.

Tim

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Old 09-13-2005, 04:55 PM   #3 (permalink)
CanadianRigger
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Well i don't think i'll be making any calls to Mars in the next little while, but if i do we should have a good connection then...
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2000 Chev LS L-65 HO 2500HD 4X4 SB
+92^mm OBDI 5068 IP , 8 sleeves bored 40 over, 18:-?, scat crank, splayed mains, new mystery cam, copper gaskets, Studs, ported, Hi-Pops, Cumins LP, FTB..., PANE, most likely? 6" Pro-Comp Lift, 33" Treads

1996 GMC 4x4 SB "S" - GM-8, 3"DP, 3.5" w/4"stacks, Gutted Plenum, EGR Block Off, Boost/Pyro, Air Bags. 59mm^


94 1500 Z-71 SB 4x4, 5.9L 12V Cummins, 40HP Injectors, 14CC Turbo, NV4500 w/Gear Vendor, Air Bags, Gauges, 4" Exh, Digi-Boost Propane (stolen?), Dual Flexilite Fans, 3" Body Lift, IC up front.
628 ft/lbs TQ, 271 RWHP... for sale!

94 Blazer Sport - Westers Performance Chip for sale in the market place!
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Old 09-13-2005, 06:24 PM   #4 (permalink)
TurboTahoe
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The RF interference will show up as noise in your audio player.

Sincerely,

Rob
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1999 3/4 Ton Suburban 6.5 TD SLT Kid Hauler. 124K miles. Black with Tan leather. Hellwig sway bars front and rear. Flowmaster downpipe. Remote FSD under-the-bumper with Kennedy 72" harness and SSDiesel FSD Cooler. PowerSlot brake rotors. THIS RIG IS FOR SALE HERE: https://www.dieselplace.com/forum/45-...condition.html
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Old 09-13-2005, 10:58 PM   #5 (permalink)
THEFERMANATOR
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It is also a filter for the optic sensor to prevent interference from other devices with it. My suburban has one on it.
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Old 09-14-2005, 08:49 AM   #6 (permalink)
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Quote:
Originally Posted by thefermanator View Post
It is also a filter for the optic sensor to prevent interference from other devices with it. My suburban has one on it.
Ding Ding Ding! we have a winner!

It not to prevent interference with your radio, it to prevent interference with the optic sensor. Muy high frequencies in those lines, a stray signal could really screw the pooch!

I'd make sure to run one.

Tim
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Old 09-14-2005, 09:49 AM   #7 (permalink)
Kennedy
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In every case that I've removed this device, it did not hurt performance. It actually seems to help eliminate AM radio static. I've also known removal of this device to help where repeated pumps were replaced due to PO251 etc codes...
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Old 09-14-2005, 09:59 AM   #8 (permalink)
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Quote:
Originally Posted by Kennedy View Post
In every case that I've removed this device, it did not hurt performance. It actually seems to help eliminate AM radio static. I've also known removal of this device to help where repeated pumps were replaced due to PO251 etc codes...
Really...

That seem conter-intuitive. But high frequencies are just to the left of witchcraft to me.

I got enough headaches keeping the 60hz power stuff from cross-talking to lower voltage signals at work...

Tim
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Old 09-14-2005, 12:09 PM   #9 (permalink)
BornReady6.5
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Should I be concerned if I dont have one of these? I think i have seen these "filters" on the SS site and a few others. But I was under the impression my applications didnt require it. Someone feel free to enlighten me.
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1996 K3500 Crew cab, LB, SRW, Vin F, 141 casting, NV4500 w/fast coolers, CKO HX40WII turbo w/man boost controller, FTB mod W/E8153 14psi Lift pump, CAT fuel filter, ditched FFM, Quadstar performance tune, Dorman PMD Remote mount kit w/#9, Diamond eye 4", Boost, Pyro, trans gauge, Level keys w/285's, 4:10 gears, 2/0 Battery cables w/dual red tops, Lube Specialist cooler lines w/Leroy diesel cooler adapters. SOLD 5-18
1994 GMC SLE K1500 Z71, Ext.Cab SB, 6.5TD, 4L80E, 6lug 9.5 w/3:73's, 141 block, FTB mod, LP relay mod, Remote PMD, vin S intake to F specs, EGR blocked, S&B Intake, 3" turbo back straight pipe, Quadstar Tow Tune & adjustable VSSB, 2/0 battery cables, optima red tops.
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Old 09-14-2005, 12:41 PM   #10 (permalink)
minisub
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Isn't this thought to be the cuplrit behind the 1400 - 1500 rpm "fishbite" or churgle or what have you? Woking off of very vague memories here....

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