Installed the new ETECNO 7V Glow Plug Sept 25, ran jeep for a month about 1k miles. Took trip to Phoenix from Kansas City with no problems till I was on return trip home and into the 2nd hr after stopping for fuel I got the CEL for #4 glow plug. I finished my trip home and cleared the codes and then got CEL for glow plug and Relay.

Switched the #1 and #4 glow plugs and now a CEL for both plugs. put on new relay and that code went away, but still have 2 bad glow plugs. Checked the resistance on all the plugs (viewtopic.php?f=98&t=70159) and get .0298 on #3 & #4, no reading on the #1 & #2.

anyone have this problem?

Update:

After checking voltages, I see that there is .05 volts at connector on each glow plug when the ignition IS OFF. When you turn on the ignition, you get 5.68 volts for 3 seconds dropping to 3.78 volts for 10 more seconds.

After further investigation, I found the wiring harness before plug had a wear spot on corrugated cover, pulling it off, I noticed a tiny wear spot on #4 glow plug insulation causing a short to alternator housing. Evidently, when that happens, the glow plug relay shorts out and dumps 12 volts straight to glow plug and burns it up! even when key is off, it reads 12 volts to shorted glow plug! Not to the other glow plugs, just the one that originally shorted out.....

So, when working around the glow plugs, make sure that you have all wire harnesses away from engine!

Good tip.... will check mine tonight!

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2005 CRD
ORM / EHM
Cummins lift pump
RRO 3" lift

thanks for the info..

replace my wife is one of my winter projects this winter..there are still the original..
with all the problem with the ceramic..time to replace them with metal..

I would prefer to just remove them all together..its not that cold around here..

-dkenny

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84 BB school bus, DD8.2L turbo ->the transmission died..too expensive to fix..it'll be heading to the scrap yard..4/11)..Bus gone to Scarp 8/23/11
06 Liberty CRD
'99 dodge ram 2500 quad cab, 4x4, 24v
all Biodiesel powered when its warm enough

????????

Replace your wife?

Keep me informed how that goes.....

Dkenny, this definitely sounds funny, but may or may not be a good idea... Original wives can be very expensive... Lol

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

just my great typing skills at work..

let's try wife's jeep glow plugs..

I'll keep the current wife.

-dkenny

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84 BB school bus, DD8.2L turbo ->the transmission died..too expensive to fix..it'll be heading to the scrap yard..4/11)..Bus gone to Scarp 8/23/11
06 Liberty CRD
'99 dodge ram 2500 quad cab, 4x4, 24v
all Biodiesel powered when its warm enough

Marriage is grand, divorce is ten grand.

Except when the mistress is a CRD, then the mistress is the expensive one to keep happy!

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Proud supporting vendor of LOST Jeeps
TRAVELING CRD TECH. I come to you!
Need help? Just ask! I've taken it apart more than most.
Email jeep [at] maincomputer [dot] com - BOARD MESSAGING IS BROKEN
Over 225 CRDs currently driving with my valves, timing belt, rockers, or ARP Studs.
Bad noises = REALLY bad things.

i have a question for you , i have the GCU # 56044671AC , can i put a 7v etecno GP , or i need a 56044671AA GCU ?

thanks in advance

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ECU Tuner -EGR OFF -DPF OFF Swirl/Flap OFF, Lambda OFF , DTC OFF in many cars , not ONLY

https://www.facebook.com/YetiChiptuning

Either on of those work fine with the 7v gp.

great , thanks a lot

_________________
ECU Tuner -EGR OFF -DPF OFF Swirl/Flap OFF, Lambda OFF , DTC OFF in many cars , not ONLY

https://www.facebook.com/YetiChiptuning