1997 hard cold start - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 9 Old 10-30-2009, 08:44 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2007
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Angry 1997 hard cold start

Replaced GPR & GPS and it takes about 3-5 cycles turning key on and off before it will start when cold. When it does start there is a big plume of white smoke. Any ideas? Thanx
T.Nelson is offline  
post #2 of 9 Old 10-30-2009, 09:02 AM
Serving Our Country!
 
Join Date: Feb 2009
Location: albuquerque
Posts: 140
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews

possible uvch or your compression is low. Just an idea i am sure a tech should come along soon with more insite. There are a tone of guys here with good advice.
sharky1320 is offline  
post #3 of 9 Old 10-30-2009, 09:59 AM
Powerstroke.org Rookie
 
Join Date: Oct 2009
Location: Bellingham
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
That's the test every mechanic told me to do, for a quick check on Compression. I'd spend the $150 to get it looked at.
Proc is offline  
post #4 of 9 Old 11-01-2009, 04:55 AM
Compression Ignition Addict
 
cndrm's Avatar
 
Join Date: Aug 2009
Location: Albuquerque, Nm
Posts: 777
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Ok. Well, while your compression is most likely not where it was when the motor was new, I doubt it's that low. How many miles on motor? Yes, you could spend $150 to have your compression tested, or you could spend $30 on a manual, and $45 on a compression tester, and do it yourself. Or, if you really think your compression is THAT low, then just go to a shop and have your top end rebuilt. Personally, unless you've got well over 350K miles, I highly doubt your compression would be that low, unless the motor got dusted really bad.

What GPR did you install? Have you checked your output voltage on the new GPR? It is possible to get new parts that are bad.

mike

Don't burn your bridges, you might have to cross them again in life.

Don't sugar coat things. It covers up the taste of real life.

Providentia Remedium Belli

Early 1995 F-350 Crew Cab Long Bed
33" Hankook RT03 Muders
DIY Intake w/ Napa 6637 filter
3" DP to 4" exhaust

Want:
Charge Air Cooler
Adrenaline HPOP
Fuel System
Custom Tunes
Upgraded gear reduction starter
Bypass Oil System
Bypass/ Coolant filter system
Gauges
Built Tranny
cndrm is offline  
post #5 of 9 Old 11-14-2009, 08:03 AM
Member
 
jrcrane1's Avatar
 
Join Date: Nov 2008
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Talking Hard Cold Start Exactly

Did you get this fixed? If not check to see if your relay is activating and for how long. Try unplugging your Oil Temp Sensor on the back ot the HPOP. I had the same symptoms and the mechanic showed me this. I know the GPR's are a problem but this problem with the OT Sensor should be included in the troubleshooting dialog more. Just a thought.

97 F-250 Ext Cab 4X4 Auto
298000 Miles
3" Down Pipe
4" Cat Delete Exhaust
6637 Filter Mod
Heavy Duty Stancor GPR
Baby Swamps Injectors "OMG"
jrcrane1 is offline  
post #6 of 9 Old 11-16-2009, 02:08 AM
Compression Ignition Addict
 
Join Date: Aug 2009
Location: Suffolk County
Posts: 177
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by jrcrane1 View Post
Did you get this fixed? If not check to see if your relay is activating and for how long. Try unplugging your Oil Temp Sensor on the back ot the HPOP. I had the same symptoms and the mechanic showed me this. I know the GPR's are a problem but this problem with the OT Sensor should be included in the troubleshooting dialog more. Just a thought.
so if you unplug the oil temp sensor what will that cause or what problem does that isolate?


2000 F350 (7.3l)
2003 F550 (7.3l)
2004 f550 (6.0l)
2005 f750 (Cat C-7)
2006 f250 (6.0l)
2008 f350 (6.4l)

www.Zullo-Design.com
JasonZ is offline  
post #7 of 9 Old 11-16-2009, 04:27 AM
Member
 
jrcrane1's Avatar
 
Join Date: Nov 2008
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Thumbs up Oil Temp Sensor

The way the mechanic explained it (also credit to cndrm on this site):
The GP's are controlled ultimately by the PCM. The PCM takes data from the Baro sensor, and the oil temp sensor, and determines how long to open the GPR (to send power to the GP's) for. So, in theory, if either the Baro sensor, or the Oil temp sensor were bad, then the whole system would not work correctly.

If when the dealer unplugged the oil temp sensor, and the GPR cycled regularly, and the GP's worked fine, then I would agree that your Oil Temp sensor is poo, and needs to be replaced.

Your problem I think, IS being caused by the oil temp sensor. If it's sending bad data to the PCM, then the PCM won't actuate the GPR for the correct amount of time. Change out the OTS, and go from there.

So far this has been the case as it has started everytime without being plugged in and it is getting colder here at night. 20's and below.

97 F-250 Ext Cab 4X4 Auto
298000 Miles
3" Down Pipe
4" Cat Delete Exhaust
6637 Filter Mod
Heavy Duty Stancor GPR
Baby Swamps Injectors "OMG"
jrcrane1 is offline  
post #8 of 9 Old 11-16-2009, 04:29 AM
Member
 
jrcrane1's Avatar
 
Join Date: Nov 2008
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Cool OTS

As a side note the new sensor came with a new connector and pigtail.
Maybe Ford knew!?

97 F-250 Ext Cab 4X4 Auto
298000 Miles
3" Down Pipe
4" Cat Delete Exhaust
6637 Filter Mod
Heavy Duty Stancor GPR
Baby Swamps Injectors "OMG"
jrcrane1 is offline  
post #9 of 9 Old 01-24-2010, 10:26 AM
Powerstroke.org Rookie
 
Join Date: Jan 2010
Location: St. Louis, Mol
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Will a snap-on scan tool be able to check cam sensors and oil temp sensors. I have a 96 7.3 very hard to start cold, gpr tests good, glow plugs an harness new, enigne sounds like it has no compression, cranks very fast, and times only sounds lke it wants to start when letting off of the key, when it finally does start, ruins fine.
trunner_2000 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome