Another glow plugs issue (probably simple)
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Mountain Pass
Joined: Apr 2011
Posts: 117
Likes: 3
From: Bakersfield
Another glow plugs issue (probably simple)
For the first few years I've owned this Van (1993 E-350 7.3L non turbo ambulance) my glow plugs worked perfect. About 2 years ago it started working sometimes, sometimes not. I would turn the key into the ON position and the WTS light would come on, and after 8-10 seconds it would go off and there would be a click, click,click,... Then I'd start it right up... WONDERFUL! Other times I would put it into ON position and the WTS light would go on, and after 8-10 second it would go off and NO CLICK, CLICK, CLICK... And no startup
Sometimes after two or three attempts it would work. Now, I can't get it to work at all... It's pop the hood and spray ether time...
In your opinion, does this sound like a classic case of relay going out, and eventually failing? Or perhaps a different issue?
I haven't tested anything, but I did look at all my wires and i didn't see anything disconnected or signs of melted wires... What I do know is that on my instrument panel (ambulance systems monitor) I used to see a voltage drop to about 10.5 volts when the plugs would cycle, and now it doesn't drop below 12.8 when the WTS light is on.
Thanks in advance for your input! :-)
Sometimes after two or three attempts it would work. Now, I can't get it to work at all... It's pop the hood and spray ether time...
In your opinion, does this sound like a classic case of relay going out, and eventually failing? Or perhaps a different issue?
I haven't tested anything, but I did look at all my wires and i didn't see anything disconnected or signs of melted wires... What I do know is that on my instrument panel (ambulance systems monitor) I used to see a voltage drop to about 10.5 volts when the plugs would cycle, and now it doesn't drop below 12.8 when the WTS light is on.
Thanks in advance for your input! :-)
Tuned
Joined: Jul 2010
Posts: 435
Likes: 6
From: Kitimat British columbia
For the first few years I've owned this Van (1993 E-350 7.3L non turbo ambulance) my glow plugs worked perfect. About 2 years ago it started working sometimes, sometimes not. I would turn the key into the ON position and the WTS light would come on, and after 8-10 seconds it would go off and there would be a click, click,click,... Then I'd start it right up... WONDERFUL! Other times I would put it into ON position and the WTS light would go on, and after 8-10 second it would go off and NO CLICK, CLICK, CLICK... And no startup
Sometimes after two or three attempts it would work. Now, I can't get it to work at all... It's pop the hood and spray ether time...
In your opinion, does this sound like a classic case of relay going out, and eventually failing? Or perhaps a different issue?
I haven't tested anything, but I did look at all my wires and i didn't see anything disconnected or signs of melted wires... What I do know is that on my instrument panel (ambulance systems monitor) I used to see a voltage drop to about 10.5 volts when the plugs would cycle, and now it doesn't drop below 12.8 when the WTS light is on.
Thanks in advance for your input! :-)
Sometimes after two or three attempts it would work. Now, I can't get it to work at all... It's pop the hood and spray ether time...
In your opinion, does this sound like a classic case of relay going out, and eventually failing? Or perhaps a different issue?
I haven't tested anything, but I did look at all my wires and i didn't see anything disconnected or signs of melted wires... What I do know is that on my instrument panel (ambulance systems monitor) I used to see a voltage drop to about 10.5 volts when the plugs would cycle, and now it doesn't drop below 12.8 when the WTS light is on.
Thanks in advance for your input! :-)
Logistics Pro
Joined: Apr 2005
Posts: 4,221
Likes: 17
'93 used the second generation glow plug system. While just as ****ty as the first generation system, it's ****ty in different ways.
1) Check glow plugs. If more than one is dead the system will short-cycle and basically not work.
2) Check wire connections. If there's too much resistance the system will short cycle. And I don't mean just look at them, pull the connections, clean the terminals, reinstall.
3) If you have to replace the module, try to get a Ford or IH part, the aftermarket replacements are crap.
Glow Plugs 101 Tutorial
1) Check glow plugs. If more than one is dead the system will short-cycle and basically not work.
2) Check wire connections. If there's too much resistance the system will short cycle. And I don't mean just look at them, pull the connections, clean the terminals, reinstall.
3) If you have to replace the module, try to get a Ford or IH part, the aftermarket replacements are crap.
Glow Plugs 101 Tutorial
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