97 Powerstroke very rough idle - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 1 Old 12-24-2012, 10:41 AM Thread Starter
Powerstroke.org Rookie
Join Date: Dec 2012
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
97 Powerstroke very rough idle

Hey everyone. First time posting anything on here. Have had quite the fight with my 97 PS for a long time now. Hoping someone can help me out. Here is a link to a video showing exactly what my truck is doing on start up. 97 Powerstroke with rough idle problems...help - YouTube

Happens when cold or warmed up engine and in all weather temps whether it's 30 degrees or a 100 degrees. If I get on the throttle as shown in the video it smooths out and is fine. Happens almost every single start up. Parts replaced include : GPR, GP's, Valve cover gaskets(wires and UVCH) MAP sensor, CPS (Cam sensor), cleaned out FPR screen which was clogged by the way, ICP sensor plug is dry and looks fine. Unplugged ICP sensor while running and truck runs rough and dies with CE light so assuming ICP sensor is working properly. Partially cleaned IPR (did not take out of HPOP) Plug in seems fine. Heater element inside fuel bowl does work. Only 3500 miles on the engine oil which I use DELO 15w-40. HPOP reservoir is topped off. Bled HPOP lines but did not seem to have any air in them anyway. NO CODES and Buzz test was good. Fuel filter is fairly new too same with air filter. Plug in's to valve cover harnesses right and left side look good and plugged in all the way. GPR seems to work fine and will stay on for about a minute if block heater not plugged in. Truck is a mother to start if not plugged in overnight in barely 30-40 degrees nights. Replaced with FPR spring kit with the newer california spec spring and fuel pressure is pretty steady at about 70psi at idle. Have had this issue since I bought the truck almost a year ago. Straight piped one hundred percent with 3" diamond eye downpipe. Tried starting in Neutral to see if I have TRS(transmission range sensor) issues and still no difference. Truck runs better since replacing MAP sensor used to get 13lbs of boost now back up to about 15-16lbs. Please help. Open to any suggestions. Truck runs very strong other than this problem.
Truck_driver06 is offline  
Sponsored Links

Quick Reply

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


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

Email Address:


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