Crank no start

[duddy]

Crank no start.
A shorted out across the glow plugs relay, now get a no start issue.
Any simple checks, I'm not familiar with the 7.3, it's a 01.
I Havnt touched the truck yet, I know it's not getting any fuel, doesn't smoke while cranking.

 

[ToMang07]

WTS light coming on/off?

Tach moving? Voltage?

 

[ghohouston]

Check all fuses to begin with.

 

[SlowSmoke]

Crank no start.
A shorted out across the glow plugs relay, now get a no start issue.
Any simple checks, I'm not familiar with the 7.3, it's a 01.
I Havnt touched the truck yet, I know it's not getting any fuel, doesn't smoke while cranking.

The glow plugs got shorted out? Cause these trucks will not start without glow plugs. Does it sound like it's trying to start or not at all?

 

[Arisley]

The glow plugs got shorted out? Cause these trucks will not start without glow plugs. Does it sound like it's trying to start or not at all?

Huh?

I drove my truck with bad glow plugs for one winter, all summer and half of another winter. Started fine down to 45º. Below that I had to plug it in.

If you are not getting fuel, there is your problem.

 

[SlowSmoke]

Huh?

I drove my truck with bad glow plugs for one winter, all summer and half of another winter. Started fine down to 45º. Below that I had to plug it in.

If you are not getting fuel, there is your problem.

You had a few bad glow plugs or no glow plugs? Those trucks will barely start with a bad glow plug relay and no intake heater. We also live in Canada so our idea of warm and cold is different. I was more getting at his post didn't make sense about the relay

 

[ToMang07]

You had a few bad glow plugs or no glow plugs? Those trucks will barely start with a bad glow plug relay and no intake heater. We also live in Canada so our idea of warm and cold is different. I was more getting at his post didn't make sense about the relay

Ok....intake heater doesn't do dik for starting, it's only to control smoke when idling at cold temps.

Glow plugs....yes you can start without them, although it will take a little longer cranking. I'll go unplug my GPR and prove it if you'd like.

 

[ghohouston]

I went one unseasonably cold texas winter with 1 of 8 glow plugs working on my 7 3. Started every time.

 

[BS Hauler]

I just can't resist. A cold winter in Texas is a nice summer day in Iowa.

 

[ghohouston]

I just can't resist. A cold winter in Texas is a nice summer day in Iowa.

I'd ***ing die. And I know. It was low teens. 100 degrees in the sun is my weather

 

[Isobaric]

You had a few bad glow plugs or no glow plugs? Those trucks will barely start with a bad glow plug relay and no intake heater. We also live in Canada so our idea of warm and cold is different. I was more getting at his post didn't make sense about the relay

Hmmm. My 7.3 has been running around with blanks in the GP holes for 2 years now. Starts unassisted down to 20F, and will go much lower with a block heater or a snort of ether.

I would check all fuses and fusible links.

 

[SlowSmoke]

Hmmm. My 7.3 has been running around with blanks in the GP holes for 2 years now. Starts unassisted down to 20F, and will go much lower with a block heater or a snort of ether.



I would check all fuses and fusible links.

Ok I stand corrected. There ya go. We have replaced hundreds of glow plugs for rough starting trucks and they clear right up. Just my 2 cents. Do whatever you want!

 

[TyCorr]

They didnt say it starts easy.

When I changed mine last fall three were working right. The day I changed them it was 12 degrees. It was starting fine. Does it start easier now, yes. Quicker.

 

[Isobaric]

Ok I stand corrected. There ya go. We have replaced hundreds of glow plugs for rough starting trucks and they clear right up. Just my 2 cents. Do whatever you want!

She chooch's for a few minutes on a cold start, and a gear reduction starter is necessary...but after having to pull the head to retrieve a stuck GP tip (Beru) I vowed to fix the issue permanently.

 

[Arisley]

Crank no start.
A shorted out across the glow plugs relay, now get a no start issue.
Any simple checks, I'm not familiar with the 7.3, it's a 01.
I Havnt touched the truck yet, I know it's not getting any fuel, doesn't smoke while cranking.

WTS light coming on/off?

Tach moving? Voltage?

Check all fuses to begin with.

OK, we got that all settled.

Duddy, is it still not working. Have you troubleshot any further.

 

[duddy]

Still no start, I had ten minutes with it. Been a hectic week, tach reads, n no blown fuses.

 

[duddy]

OK, we got that all settled.

Duddy, is it still not working. Have you troubleshot any further.

Crank speed is at 200
No injector buzzing
Keogh test came up 1663,380,1283. Fdcs circuit fault, glow plug circuit fault, ipr circuit fault

Fuses and relays all check. Going to pull the edge box out next

 

[duddy]

Looking for a wiring diagram if anyone has some help

 

[Arisley]

 

[duddy]

Pcm for the win. Must have fried it when shorting out the glow plugs relay. Thanks for the schematics Risley.