hard starting - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 10-14-2011, 12:59 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Oct 2011
Location: Houston Texas
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
hard starting

I have a 97 f 250 and it takes longer to start than it us to. I did a search and replaced the gp relay. When you turn the key on the volt indication on the meter goes down to about 6 volts.It doesn't appear that the relay is coming on. I put a meter on the back side of the relay and there is no voltage and the relay doesn't appear to be coming on when the key is turned on.I do have 12 volts on the red wire when the key is turned on.Where should I look next?
Nicholas B is offline  
post #2 of 5 Old 10-14-2011, 03:17 PM
Compression Ignition Addict
 
Patrick Feeley's Avatar
 
Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 2,226
Thanks: 0
Thanked 86 Times in 84 Posts
Mentioned: 0 Post(s)
Quoted: 5 Post(s)
Feedback Score: 0 reviews
White smoke cloud on startup? Check the voltage drop across the relay by placing the meter leads on the large relay terminals. After the key is turned to Wait-to-Start, what's the reading (you have about 1.5-2 minutes to make the reading)? Anything more than 0.5V and the relay is not working properly (either the PCM is not commanding it to energize ... it does this by grounding one of the small terminals ... usually not the problem OR the relay is just bad). Make sure the batteries are both good (have them checked ... independent from each other, i.e. cables disconnected from both). Check the condition of all the battery cable connections at all ends. Try plugging i the block heater for about 3 hours prior to the first cold startup ... how did it start, better or about the same? Cheers!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
Patrick Feeley is offline  
post #3 of 5 Old 10-14-2011, 04:14 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Oct 2011
Location: Houston Texas
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
There is no white smoke. When I turn the key on the relay is coming on.Earlier today after I replaced the relay it was not coming but the engine was hot. The voltage on the batteries drop to about 11.70 volts. I have plugged the block heater in and will try it in a couple of hours.Tomorrow I will have the batteries checked.
Nicholas B is offline  
post #4 of 5 Old 10-16-2011, 04:07 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Oct 2011
Location: Houston Texas
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
What now? I had the batteries checked and they were both good. When i turn the key on the wait to start light comes on for about 5 seconds and goes out.
The gp relay comes on. The voltage on the indicator in the truck drops to about ten volts and when the gp relay comes on it drops lower and stays down after the truck finally starts.
Nicholas B is offline  
post #5 of 5 Old 10-16-2011, 11:19 PM
Serving Our Country!
 
JSchuricht's Avatar
 
Join Date: Aug 2007
Location: Manor, TX
Posts: 2,973
Thanks: 0
Thanked 25 Times in 24 Posts
Mentioned: 1 Post(s)
Quoted: 0 Post(s)
Feedback Score: 2 reviews
The GPR will stay closed for up to two minutes after the truck starts. Give it some time and see if your voltage comes back up. The WTS light does not indicate if the GPR is closed.

JSchuricht 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