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dubber
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Joined: 23 Aug 2007
Posts: 38
Location: Canada
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 Posted: Tue Oct 07, 2008 2:31 Post subject: Do I have a bad Glow Plug Module |
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It doesn't seem to matter what temp it is, my Bighorn only glows for about 4 secs. Once started it smokes a and rattles around for awhile before smoothing out. I've tried unplugging the coolant temp sensors to see if it will make it cycle longer, but it does not. Does anyone have an experience like this and a way to solve it. Winter's coming and I want a truck that will start better.
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| Posted: Tue Oct 07, 2008 2:31 Post subject: Google Ads keep this community free to join! |
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markymoan
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Joined: 25 Jun 2005
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| Posted: Tue Oct 07, 2008 9:08 Post subject: |
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Sounds more like a faulty glow plug to me 
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dubber
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| Posted: Tue Oct 07, 2008 15:39 Post subject: |
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I would say your right, but I just changed all 4 glow plugs and it made no difference.
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markymoan
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| Posted: Tue Oct 07, 2008 16:02 Post subject: |
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OK then, i'm not 100% but theres a box about the size of a 20pkt of cigerettes at the front near the n/s headlamp, previous posts said it was the outside temp sensor for the heater plugs ?
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dubber
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Joined: 23 Aug 2007
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Location: Canada
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| Posted: Wed Oct 08, 2008 3:57 Post subject: |
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I've looked for that temp sensor. Is it by the driver or passenger side headlight, up high or down low?
Thanks
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dxmedia
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Joined: 04 Mar 2007
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Location: Hope Valley
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| Posted: Wed Oct 08, 2008 7:17 Post subject: |
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Drivers side behind the bumper is a large sliver box held on by 2 10mm bolts. It's got 12V stamped on the front of it. If you've fog lights it's just above these.
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dubber
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Joined: 23 Aug 2007
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Location: Canada
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| Posted: Wed Oct 08, 2008 19:25 Post subject: |
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I unplugged the sensor and it didn't seem to make any diff to the glow plug cycle time or starting. Does it need to be jumpered to make things think it's colder than it actually is?
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the flower man
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Joined: 04 Apr 2007
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Location: north kent
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| Posted: Fri Oct 10, 2008 1:03 Post subject: |
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| dubber wrote: |
| I unplugged the sensor and it didn't seem to make any diff to the glow plug cycle time or starting. Does it need to be jumpered to make things think it's colder than it actually is? |
sorry i dont understand the question?
the temp sencer detects the temperature and then holds the glow plugs on for a longer or shorter period.
on mine .8 sec when cold and 2 sec when engine is warm.
if you turn the ignition on and wate for the glow plug light to go out,then turn the ignition off and then back on and wate again for the glow plug light to go out before turning her over. if she fires up with no probs you will need to change the temp sencer if that makes sence 
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dubber
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Joined: 23 Aug 2007
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Location: Canada
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| Posted: Mon Oct 13, 2008 3:43 Post subject: |
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Which temp sensor needs replacing? The one behind the bumper or a coolant temp sensor? If coolant sensor, which one?
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