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Need help my only transportation, just replace glow plugs now runs really bad

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  • Angelo Attard
    Angelo Attard May 11, 2010

    why did u change glow plugs

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Did you undo any fuel lines if so try and undo the fitting a turn and then crank the engine till a good amount of fuil comes out then lock them up and run the engine see how it gos

Posted on Dec 21, 2008

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P0674 GLO PLUG #4 CODE. WHAT COULD BE THE PROBLEM. THANKS RAY


ill only speak from my expierence with glow plug.they are designed to warm fuel temperture so you have combustion on cooler days like fall and winter.the ford i worked on had similar codes,it all boiled down to a shorted out glow plug.i replaced glow plug and cked wiring for bad cuts or rubbing against anything.fired truck up and it runs perfect .hope this helps you.

Jul 07, 2011 | 2001 Ford F250 Super Duty Super Cab

1 Answer

Hyundai Accent 1.5 Diesel. Intermittent problem with starting. Sometimes starts and runs fine. However sometimes on starting car will not run above 750 rpm and throws out HUGE clouds of black smoke. ...


it sounds like a glow plug issue. perhaps a bad glow plug relay. I would think its the relay if the problem comes and goes. If it were a bad glow plug the problem would be constant. check for volts at the glow plugs next time the car acts up. If you find no volts, tap on the glow plug relay next time you turn the key on. This may cause it to activate. if so then replace relay

Jan 05, 2011 | 2003 Hyundai Accent

1 Answer

My 2001 F350 seemed to have gelled up overnight with cold temps. I had fuel additive in the system. Once it warmed up today and batteries fully charged, it cranked very slow and then after 3 tries it...


glow plugs may be bad,when starting try turning switch on several times,each time you do,wait for the wait to start light goes off, if it starts like that,then your glow plugs need replacement. you can start it with either spray,but when you do that the motor gets addicted to the bottle,so to speak, then you'll really need to replace the glow plugs if you keep either starting it.when using either spray it into the air induction,use very little either,if you can't find the either,you can use regular starting fluid,but either one you choose,it takes just a quick spray to start. thank you for choosing fixya.com

Jan 04, 2011 | 2001 Ford F350 Super Duty SuperCab

2 Answers

Ignition switch is broken, need to start truck using a button on the steering column...previous owner said he needed to use starting fluid after ignition switch broke...i assume glow plugs are not getting...


you certainly have a problem, checking th glow plugs is easy, 12 volts at the harness to each plug and resistance for the for the plugs, if they are bad it will read open circuit, as for toggling the circuit, bad idea, the original circuit cuts out when the plugs are glowing, without it you willl be constantly burning glow plugs,

Nov 29, 2010 | 1988 Ford F 250

2 Answers

Where are the glow plugs located on 96powerstroke


in teh cylinder head next to the injectors

Dec 24, 2009 | 1997 Ford F250 SuperCab

2 Answers

1996 1.9 diesil glow plug light keeps flashing hard to start replaced one glow plug in garrarg one week later same problem


Probably have one or more glow plugs bad...- There is a testing method, and I think they are easy to replace - when the temperature outdoors changes, you'll almost have to replace them, as you'll about never get a diesel started in the cold otherwise -...

Aug 30, 2009 | 1996 Volkswagen Golf

1 Answer

Glow plug indicator blinking


Your glow plugs are going bad and need to be replaced. This is a sign to you that they are basically running all the time because they dont know that thye are heated up and the car is running. Common problem with diesels

May 28, 2009 | 2003 Volkswagen Jetta TDI

1 Answer

Glow plug light


Thats not good, if the glow plugs are being charged the whole time They will burn out quickly if not already. Even if the glow plugs are burned out the engine will still start unless your in a really cold region. Sounds like the GP (GP = glow plug) relay is fused in the open position, its located above the fuse panel refer to your owners manual to its exact location above the fuse panel. Just pull this relay out and your light should go out while engine is running. If this works simply replace the relay from your local Volkswagen dealer, but the bad news is I would highly recommend pulling the GP's out and checking to see if theres anything left of them. There not built to be on constant. Good luck Hope thats your problem just a relay.

Dec 19, 2008 | 1991 Volkswagen Golf

5 Answers

02 VW engine light that stays on


You probably need to replace the glow plug harness. The contacts in the boots that connect to the glow plugs get corroded and throw off the resistance of the circuit. The controller in the VW measures whether your glow plugs are good or not by testing the resistance in the circuit. Test all the glow plugs like DickyIV1 stated and if they are all good try cleaning out the crud on the contacts in the glow plug harness. You will then either need to clear the error code or wait several trips for it to clear itself. If it never clears itself or if it comes back on after you clear it then the glow plug harness is too much of a mess. This is really common on the TDIs (mine needs to be changed but i have been putting it off and ignoring the mil light). When I first tried cleaning the harness on my car it didn't give me a problem for another year and a half. But I knew I'd eventually be changing it.
The other thing to keep in mind is that you should change out glow plugs as a set. It causes less problems in the long run since if one failed you will probably find other will soon fail and it keeps all the resistance close to the same value.

Jul 16, 2008 | 2002 Volkswagen Jetta TDI

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