question on starting
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question on starting
I have a 1999 F-550, 7.3 power stroke diesel with a 6 speed standard trans. The engine won't start with the key. It turns over fine, but won't start. However, it will start easily when I catch it in gear. Does anyone have any ideas why it won't start with the key? Thanks, Ken
Post Fiend
Joined: Dec 2009
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From: Livoina,La
Could be the neutral safety switch on the clutch pedal. Unplug it and make a jumper wire to jump the wire together and try to start it.
Caution: make sure it not in gear and foot is on the clutch cause if that's the issue it will start in gear and take off
Caution: make sure it not in gear and foot is on the clutch cause if that's the issue it will start in gear and take off
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
Voltage.
You may have enough for your injectors to fire with a clutch pop start...
But when you try to crank it... the system voltage drops below minimum and no go.
Check your charging system...
Have your batteries tested.
Xtof
You may have enough for your injectors to fire with a clutch pop start...
But when you try to crank it... the system voltage drops below minimum and no go.
Check your charging system...
Have your batteries tested.
Xtof
More Turbo
Joined: Feb 2004
Posts: 509
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From: Findlay, Il
I x2 the low voltage. If engine is not rolling over fast enough, they may not want to start. Quick check, try jumping starting off another vehicle.
Post Fiend
Joined: Dec 2009
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From: Livoina,La
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starting problem
I checked the voltage. No luck.
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Post Fiend
Joined: Dec 2009
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From: Livoina,La
What was th voltage dropping to when starting?
OTHER NO START OR HARD START ISSUES
When trying to diagnose hard start or no start issues a scan tool is needed to check and monitor the ICP (Injection Control Pressure), RPM (From the CMP) Vehicle Voltage during cranking and PW (Pulse Width) signal.
1. RPM, minimum 100 rpm cranking speed (When warm it should be over 180 rpm)
2. ICP, minimum required for starting 500 PSI if no rpm signal, ICP won’t go over 400 PSI
3. Voltage during cranking 7-10 volts minimum depending on year
4. Pulse Width; 0 ms means no sync, 1994-1997 .42 ms indicates
that PCM and IDM are in sync (on 99-03 it should be .60 ms) and the PCM is waiting on the ICP to reach the minimum of 500 PSI. When min. ICP is reached PW should change to 1-6 ms
5. If any of the above doesn’t meet the minimum specification, solve the problem as-per the appropriate Ford Diagnostic Manual.
OTHER NO START OR HARD START ISSUES
When trying to diagnose hard start or no start issues a scan tool is needed to check and monitor the ICP (Injection Control Pressure), RPM (From the CMP) Vehicle Voltage during cranking and PW (Pulse Width) signal.
1. RPM, minimum 100 rpm cranking speed (When warm it should be over 180 rpm)
2. ICP, minimum required for starting 500 PSI if no rpm signal, ICP won’t go over 400 PSI
3. Voltage during cranking 7-10 volts minimum depending on year
4. Pulse Width; 0 ms means no sync, 1994-1997 .42 ms indicates
that PCM and IDM are in sync (on 99-03 it should be .60 ms) and the PCM is waiting on the ICP to reach the minimum of 500 PSI. When min. ICP is reached PW should change to 1-6 ms
5. If any of the above doesn’t meet the minimum specification, solve the problem as-per the appropriate Ford Diagnostic Manual.
Post Fiend
Joined: Sep 2003
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From: Mesa AZ
^^^^This would be my first thought as well...
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New User
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turns over fast, won't start
Thanks for all of your suggestions, however, I put in 2 new batteries and it still won't start with key. It was suggested that the reservoir wasn't full when trying to start. We tried to fill it, but it seems to be going down as fast as I put it in. I can't see any oil leaking anywhere. Any thoughts? Thanks.
Postmaster
Joined: Apr 2012
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From: North Georgia
Does the oil drain back down into the oilpan? Check your dipstick. Make DAMN SURE you are not over filled... or you might just get to see one of those fancy viewing window upgrades in the side of your block.
My guess is you have a problem with your lpop.
Xtof
My guess is you have a problem with your lpop.
Xtof
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New User
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turns over fast, won't start
I know it is draining into the oil pan and I know it's not over full. But how is it leaking and is there a way to fix it? Also, could this be the cause of the no start with a key?