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1994.5 - 1997 7.3L Power Stroke Diesel  

DP tuner install....no start!

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Old Jun 16, 2010 | 08:53 AM
  #16  
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Originally Posted by clintusaf
He's picking up a code reader today to see if it has connectivity with the PCM. If not, i guess he'll be looking for a new one. The guy hasnt worked on many vehicles and i should watched him a little closer. I guess thats how you learn right?
When you turn the key to the on position, does the CEL or SES come on slowly & stay on , may be dim...

If you pulled the PCM, make sure the plug is well seated & no pins are bent
 
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Old Jun 16, 2010 | 11:36 AM
  #17  
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Originally Posted by Action4478
When you turn the key to the on position, does the CEL or SES come on slowly & stay on , may be dim...

If you pulled the PCM, make sure the plug is well seated & no pins are bent

We checked the PCM plug and port and everything looks good.

I dont remember seeing either of those lights come up. he said he didnt see any lights out of the ordinary come up when turning it on.

We did notice that while cycling the key with the PCM pulled out, there are no dash lights at all and we do not hear the fuel system prime.
 
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Old Jun 16, 2010 | 11:52 AM
  #18  
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He has electric fuel?
 
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Old Jun 16, 2010 | 12:52 PM
  #19  
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Originally Posted by Talyn
He has electric fuel?
I don't think its an OBS they are working on
 
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Old Jun 16, 2010 | 12:55 PM
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Originally Posted by clintusaf
I'm helping a friend install a DP Tuner on his 95 PSD F250. After getting it installed, No start. His WTS light will come on but when he goes to crank, nothing. We took everything back out, recleaned the circuit board, and still the same thing. we removed the chip to see if it was something to do with it, and still no start.
anyone?
@actionrick
 
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Old Jun 16, 2010 | 01:03 PM
  #21  
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yeah, its a OBS. I didnt know what the sound was, but it sounds similar to that. What sound is that you are hearing when you cycle the key?

Still learning, thats for sure.
 
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Old Jun 16, 2010 | 02:06 PM
  #22  
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Originally Posted by clintusaf
no it does not crank. when you cycle the key, you can hear the fuel system prime. but no turnover what so ever.
This is what threw me off T

I read the original post at home yesterday, I keep telling you I can hide my own Easter eggs
 
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Old Jun 16, 2010 | 02:43 PM
  #23  
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Happens Rick.

The sound could be the fuel switch valve, GPR, Starter relay. Who knows.
 
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Old Jun 16, 2010 | 04:36 PM
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I don't think the PCM has anything to do with the engine not cranking. I'm away from home and can't check my wiring manual so I'm not 100% certain but I think the start circuit is completely separate from the PCM. The ignition switch simply sends power through the transmission or clutch safety switch to the starter relay.
 
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Old Jun 16, 2010 | 08:43 PM
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Should be no reason for the truck not to crank just dorking with the PCM unless you have some bad battery cables. But the lights are coming on, so i'm hesitant to say thats the problem.
 
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Old Jun 16, 2010 | 08:49 PM
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just a guess doing the chip i going to say the doors were open for a while is the batt.s charged?
 
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Old Jun 16, 2010 | 09:49 PM
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Fixed!!

Not sure what did it fellas. I'm guessing the PCM went into limp mode as stated at the end of the directions from DP Tuner.

We were waiting for one of our friends to show up with the code reader and were tinkering with some cosmetic stuff while we waited. I was going to unhook the PCM to let it set for a while disconnected to see if that would do anything, after backing out the 10m bolt 2 turns I turned to my buddy just for ****s and giggles, try to turn it over. It fired right up, so we unhooked the batteries and followed the directions PROPERLY! IT screams like a raped ape now. Thanks for all the replies guys. Don't know what me or my buddy would do without you guys.
 
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Old Jun 16, 2010 | 10:00 PM
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Good to here that nothing is fried.
 
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Old Jun 17, 2010 | 06:07 AM
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I've never, ever pulled my key out of the ignition when swapping chips, and I've swapped mine dozens and dozens of times. Just make sure the ignition is off. Most say to pull the key just to make sure there's no chance that the ignition is still on.
 
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