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When starting from cold it is hard to start. It maybe a problem with the circuit to the glow plugs or the glow plugs themselves. Advice please.

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  • fasai Apr 21, 2008

    Thanks. Tested the circuit and 12v is reaching the glowplugs.

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Try to change your power supply unit..

it mayb your power supply capasitor not working properly..

thanks

good luck..

Posted on Apr 21, 2008

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I have a 1985 F350 6.9 Deisel, it was cranking fine cold untill one day after it was running the glow plug light cacame on. now it will not crank cold with out ether to assist. o n ce it is cranked. it...


The glow plug light is telling you there is a problem with the glow plug circuit. There is a controller and the glow plugs themselves can fail. In your case, I suspect the controller.

Mar 20, 2015 | 1985 Ford F350

2 Answers

What is the code p0473 for a dodge sprinter van 2008


Error Code: P0404
Fault Location:
Exhaust Gas Recirculation (EGR) System - Range/Performance Problem
Causes:
-Hose leak/blockage.
-Wiring harness.
-Exhaust gas recirculation (EGR) valve/solenoid.
Error Code: P0473
Discription:
Exhaust Gas Pressure Sensor - High Input
Causes:
- Wiring short to positive.
- Exhaust gas pressure sensor (G450).
- Engine control module (ECM).
Error Code: P0674
Description:
Glow Plug Cylinder 4 Circuit - Circuit Malfunction
Causes:
-No Pre-Glow Period.
-Poor Cold Starting.
-Glow Plug Wiring faulty.
-Poor connection.
-Relay.
-Glow plug control module.
-Glow Plug faulty.
-Engine control module (ECM).
Solutions:
Check Glow Plug Wiring.
Check Glow Plug.
Error Code: P0675
Description:
Glow Plug Cylinder 5 Circuit - Circuit Malfunction
Causes:
-No Pre-Glow Period.
-Poor Cold Starting.
-Glow Plug Wiring faulty.
-Poor connection.
-Relay.
-Glow plug control module.
-Glow Plug faulty.
-Engine control module (ECM).
Solutions:
-Check Glow Plug Wiring.
-Check Glow Plug.

Sep 20, 2014 | 2008 Dodge Sprinter

1 Answer

I have a 4500 John Deer tractor that typically won't start in cold temperatures (i.e. 39 or below) otherwise it starts promptly. I've pushed the key in to heat the glow plug a minute or more.


The 4500 John Deere tractor sounds like the glow plugs are not working. Checked voltage at the glow plugs to make sure that there is 12 DC volts.(Might have to remove main wire from the glow plugs to check!) If no voltage at glow plugs there maybe a bad fuse,relay or wire connection in the glow plug circuit. If there is 12 DC volts at the glow plugs, it is possible that the glow plugs need to be replaced.

Jan 01, 2013 | John Deere 420,1020,2010,2020,2510,2520...

1 Answer

91 f350 7.3 desiel starts then dies lots of crankin 2 get started back once its started run great


Check for power on the glow plugs. You have two fusible links on the passenger side by the stater relay and a plug going over to the engine. These plugs get intermittent and that can cause your hard starting; the glow plugs themselves maybe burnt off. I've seen this happen with the other Ford diesels in our tow trucks!

Aug 01, 2012 | 1991 Ford F350

1 Answer

Will not start. code reader says glow plug heater circiut malfunction.


Hi Mike:
Glow plugs-on fed truck usually the controller-on cal.equipped truck usually glowplugs themselves.

We are assuming the you have some of this codes:
- P0380 Glow Plug/Heater Circuit A Malfunction
- P0381 Glow Plug/Heater Indicator Circuit Malfunction

I found this after searching this and other diesel sites for about a week glow plugs are covered on factory extended warranty-10 years or 200000 miles call GM @ 1-800-462-8782 have VIN# ready

Models: 2002 - 04 Chevrolet Silverado
2002 - 04 GMC Sierra
Equipped with 6.6L Diesel V8 (RPO LB7 - VIN 1) Engine; and California Emissions (YF5/NE1), or Clean Fuel Emissions (VCL)

Condition: Some customers of 2002 - 04 model year Chevrolet Silverado; and GMC Sierra trucks, equipped with a 6.6L diesel V8 (LB7) engine, and California emissions (YF5/NE1), or Clean Fuel Fleet emissions (VCL), may experience a condition where the engine glow plugs may fail. Failure of the glow plugs on these vehicles will cause illumination of the MIL. Also, depending on the ambient cold start conditions and the number of glow plugs failing open, some customers may also comment about hard starting, misfiring and white smoking after cold start.

Customer Notification: General Motors will notify customers of this special coverage on their vehicles (see copy of typical customer letter included with this bulletin - actual divisional letter may vary slightly).

Ask your local dealer.

Hope this helps; also keep in mind that your feedback is important and I will appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Dec 21, 2011 | 2003 Chevrolet Silverado 2500HD

1 Answer

Glow plug for diesels


year model? Engine size? I need a little more information than ford won't start when cold. I would guess either the glow plug relay or the actual glow plugs themselves are bad, but usually the glow plug relay, because if it were just one or two glow plugs it would start, but run like ****.

Nov 27, 2011 | Ford F-150 Cars & Trucks

4 Answers

I have a JD X595 Diesel. This is what happens, say if I start it, then shut it down it will not start again right away. The first time it starts the glow plug light comes on. Shut it down and try to start...


Before you do anything grab a test light, remove the wire from your glow plug, put one end of test light on positive on your battery and the other end on the glow plug, if the light comes on than your glow plug is ok, if not replace, otherwise you need to locate the relay/sensor that tells the glow plug when to go off/on which is more than likely the problem, you may be able to locate it by tracking the wire from the glow plug or your local John Deere service provider may be able to tell you exactly where it is over the phone.

Jun 09, 2011 | John Deere 26HP Hydrostatic 54" Riding...

1 Answer

2004 jetta/diesel engine/hard start cold


Have you checked all of your vacuum hoses for leaks? Any vacuum leak, even intake manifold or throttle body gasket, will cause an engine stall right after starting. Likewise with a fuel pressure problem. If you aren't getting voltage, maybe whatever switch starts your glow plug cycle(either turning ignition on or opening driver door, depending on model) is defective, or any of the wiring of the circuit. It's a cheaper guess.

Feb 25, 2009 | 2002 Volkswagen Jetta TDI

2 Answers

Citreon berlingo 1999 diesel 1.9l need new spark plugs


You will need some decent spanners, the nuts are 8mm on the wiring and some will need a 1/4 drive socket, some a small spanner, get decent glow plugs, maybe citroen ones, there are som unreliable ones out there, even the Bosch ones sold by factors are not as good as factory! the plugs themselves are usually13mm and tight. You may have to take some air filter or emission stuff off but not the fuel injection pipes, leave them alone!

Dec 04, 2008 | Bburago Citroen C6 Diecast Model

2 Answers

F250 Ford 7.3 L Powerstroke Hard to Start Cold


I have a 2000 F250 with Powerstroke and my buddy has a 02 with same engine. Both of us have had the same problem. There are two coils (look like starter coils) on top of the engine that can be seen from the passenger side of the truck. The shorter of the two, has to do with supplying voltage to the glow plugs. When this coil gets older, it breaks down causing a higher resistance in the circuit. Which reduces the volts that the glow plugs see. In turn resembles a problem with the plugs. My buddy and I changed the coils and both trucks start like new. The part cost $80-$90. and can be changed in less than 5 minutes. Glow plugs are a lot bigger job and more expensive.

Dec 02, 2008 | 2000 Ford F250 Super Duty Crew Cabs

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