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I changed my glow plugs on my free lander and now it wont start

I put new glow plugs in and now the jeep wont start

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  • Cars & Trucks Master
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How about the glow plug controller was it tested and it supplies power to the glow plugs?

Posted on Nov 04, 2012


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Posted on Jan 02, 2017

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SOURCE: Help with 2002 free lander ac and heater unit

Is the fan operating at this time?The vent flap lining could be loose.Remove the air intake pipe in the left footwell inside (right hand drive)and look iside if you can see the loose foam and remove.

Posted on Nov 21, 2008

  • 5 Answers

SOURCE: glow plugs wont turn on

They make two relays that will fit but only one will work. Call 772 283-8999 ask for John, He will tell you more than you really want to know, the dude is about the best diesel mechanic I know. You can email him at Tell him Peppi told you to contact him. If John is not available ask for Ron, he is better at GMC products ( no one is perfect ) but he can help you as well. They are real good guys and will take the time to help and can get parts for anything. Hope this helps

Posted on Dec 11, 2008

  • 220 Answers

SOURCE: put new glow plugs in ran fine for 1 day now it wont start..

You may want to surf around on some of the powerstroke forums for detailed answers, but I know the powerstrokes use oil pressure to control the injectors so you may have some problems with the high pressure oil pump.
Again, it is just a guess. I just wanted to point you to some of the Ford Powerstroke forums which may be of much more help for you.
Good luck..

Posted on Feb 03, 2009

  • 295 Answers

SOURCE: i have change the glow plug relay its brand new bt

The operatoin of the glow plugs heat up the combuston chamber before turning over the engine. ONce the fuel hits the combustoin chamber , The fuel will ignite.

The diesel engine only runs on air and fuel .

The glow plugs are basically a resistor that heats up the combustion chamber or pre combustion chamber.

So if the glow plugs are getting power now that the relay is change out , Yes the glow plugs have a major roll in starting the engne.

I hope this was helpful

Posted on Apr 11, 2009

  • 55 Answers

SOURCE: my sprinter wont start in cold mornings, tried

Check glow plug relay switch, located under your battery tray

Posted on Sep 30, 2009

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Jeep was running fine , everything perfect, just had a oil pressure sending unit go bad, so bought one at autozone and put new one in.. While doing this took off harness grounds,now jeep won't start??

well step one was, what
remove battery neg lug,
did you, if not you blew some fuses.

wont crank , or cranks and not start.
no the PCM is not fried. Id, bet. long as you didnt hot wire things.
check your work, put it all back as you found it.
then check fuses
then scan it. key on see if it will scan,.
then key on see if dash glow, all those warning lamps (self test) come on now. then make sure CEL lamp glows, it must
or the PCM is of OFFLINE< no power, no ground or fuel blown to it.

those are the first steps to take.

Oct 25, 2016 | Jeep Cars & Trucks


Diesel has trouble starting

hi, if you have any problems starting any type of diesel engine then this is a very good indication that one or more of the glow plugs need replacing, to get you home you can try turning the ignition on and then wait for the glow plug light to go off then instead of trying to start the engine turn it off then back on again, doing this usually gets it started just to get you home but this wont allways work.

Its best you replace glow plugs sooner rather than later as it could leave you stuck without a vehicle.

To change the glow plugs follow these quick instructions.
1. Look where the injectors go into the cylinder head then just under these you will see a smaller plug that will have a fixed wire this wire will be running from glow plug to glow plug this wire is held onto the glow plug by an 8m nut undo this nut on top of all the glow plugs, once undone you will notice that one of the glow plugs has two wires the other wire is the wire that carries the power to all the glow plugs so just remember witch glow plug this goes to.
2. now once you have removed the connecting power wire remember witch way it runs so as to get it back on the right way round it doesnt matter to much but might be a bit tight if you put it on the wrong way round.
3. Now how to undo and remove the glow plugs: To remove you will need a deep 10m socket place this over the top of the glow plug push down to ensure tight fit then undo this glow plug will then pull out (make sure their is no muck around the glow plug that can fall inside the cylinder so just check)
once you have it out its best you replace all the glow plugs as once one goes you will find that the others wont be to far behind.
4. Fitting new glow plugs. When your fitting the new glow plugs put them into their hole and gently screw in by hand to make sure you dont cross thread the thread as this can be a nightmare to put right. tighten the glow plugs in as much as you can by hand then nip them up using 10m socket and extension bar now dont over tighten them as this will damage the thread just tighten up till just after they stop then you should find they are ok.
Refit the wire loom on top of all the glow plugs remembering to fit the main power wire to the first plug make sure you tighten the nuts up properly on top holding the wire in place.
Once you have done this you are now ready to start your vehicle you should now find it starts with no problems.

If you still have problems starting you need to now start looking at things like the diesel filter or even the diesel pump, ill explain about these in my next post ok

on Dec 01, 2009 | Ford F-350 Cars & Trucks

1 Answer

Jeep Cherokee TD LTD won't start, has new glow plugs; starter motor and new ignition; It started when first done, but now it's cold it won't fire up what else can it be?

wow, no year, nor country car was sold. wow.!
lots really.
but i cant do my testing,with my tools.
did you scan it yet?
the glow plugs dont work all by them selves they need power to do that. ( controller) I have this ammeter, i clam on the glow plug wires. and see heater current , if zero then the plug is open or
the controller is malfing.
i presume the car starts warm and runs all day .... but all I have is one word :cold to assume that....
does engine start with diesel starter spray.?
if yes, then the glow plugs are the issue,
if not , its fueling issues.
why not scan it first. and not waste time and cash on good parts.

what does
and new ignition? mean?
the key switch?

Dec 13, 2015 | Jeep Cars & Trucks

1 Answer

Diesel glow plug light


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2002 ford f250 7,3 diesel wont start

Sounds like it has too do with the glow plugs, and the Glow plug timer

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Diesel engine wont start when cold

check the wireing to the glo-plugs.... sounds like they are'nt getting juice

Jan 26, 2010 | 1983 Jeep CJ7

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Jeep cherokee 2.5 diesel. wont start

sound like starter or starter solenoid bad.

Dec 15, 2009 | 1999 Jeep Cherokee

1 Answer

6.0 power stroke diesel,wife put regular gas in it,had to drop tank and clean,changed filters,twice in two weeks,wont start in the morning,have to crank it for an hour,keeps trying to start,gets closer and...

Quick check is to take a fairly thick cable from the positive terminal of the battery and touch it onto the glow plug connector , it should give a healthy spark as it makes the connection , no spark no glow plug

Sep 16, 2009 | 2005 Ford F 250 Super Duty

2 Answers

I have a 1992 ford f250 7.3l powerstroke it wont start up

You need to check the glow plug system. Check for power from the glow plug relay.

Mar 26, 2009 | 1992 Ford F250

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