Idle Jumping up and down - Diesel Truck Forum -
Thread Details Posted by Whisperinghorse, this thread has received 5 replies and been viewed 712 times.

LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 08-20-2007, 10:46 PM Thread Starter
Join Date: Jul 2007
Posts: 34
Points: 300
Thanks: 0
Thanked 0 Times in 0 Posts
Idle Jumping up and down

At start mostly when it's warm I shut off and come back and start it the idle jumps up and down! So I was told that the CPS was going and to replace it! I did and right after I installed it did the same thing so I have a spare for when it does. So with the Idle jumps up and down at start what could be the prob?
Whisperinghorse is offline  
Sponsored Links
post #2 of 6 (permalink) Old 08-20-2007, 10:56 PM
Join Date: Dec 2006
Posts: 239
Points: 530
Thanks: 0
Thanked 0 Times in 0 Posts
Most times the condition of the idle jumping up then down is called "the romps", just FYI.

When I asked about the romps on my PSD I was told that the IPR might be to blame, old or poor oil, oil too thick (not an issue this time of year), etc. I never really found anyting I could put my finger on but they went away. Sorry, not much help!
FireHunter is offline  
post #3 of 6 (permalink) Old 08-21-2007, 12:39 AM
Senior Member
CSIPSD's Avatar
Join Date: Sep 2005
Location: Bend OR
Posts: 6,337
Points: 55,719
Thanks: 19
Thanked 78 Times in 70 Posts
When it does it, just blip the throttle and it will settle down!

01 F-250 SC PSD,210k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, GTS Hybrid injectors, Studs, 910 Valve springs, Forged rods Water injection,Swamps tuned, MBRP 4" dual's, Aero, 6" tip's, 100 axl tank, 4" Revtek lift, 37-14.50-17 TOYO MT's 469hp and 1068tq...

Best Auto Insurance | Auto Protection Today | FREE Trade-In Quote
CSIPSD is offline  
post #4 of 6 (permalink) Old 08-21-2007, 04:08 AM
Senior Member
Join Date: Dec 2008
Posts: 190
Points: 109
Thanks: 0
Thanked 0 Times in 0 Posts
Sounds like the IPR o-rings are going bad. On a side not I like my rompy idle in the extreme program. I had a mullet wearing fellow ask me what cam I had in my motor.
blindviper is offline  
post #5 of 6 (permalink) Old 08-21-2007, 06:01 PM Thread Starter
Join Date: Jul 2007
Posts: 34
Points: 300
Thanks: 0
Thanked 0 Times in 0 Posts
When it does it, I can hit the pedal and it will settle down and if I don't it romps about three or four times and then settles down..
Whisperinghorse is offline  
post #6 of 6 (permalink) Old 08-21-2007, 08:54 PM
Senior Member
Join Date: May 2005
Posts: 1,921
Points: 14,679
Thanks: 0
Thanked 2 Times in 2 Posts
Send a message via Yahoo to gtspowerstroke
Some just seem to do that. High ICP seems to cause it sometimes but I'm not sure that's your problem. If you get a chip with a different PCM code it may or may not go away. My friend's truck does it really bad when he first fires it up. He's running a TEE5 chip. Not sure how much it's related though.

'96 F-250 Extended Cab, GT'S injectors, GT'S intercooler install kit, custom turbo kit with a little HX40, Swamp's BIGEST oil.
466 on #2 only
739 with NČO

13.544 in 1/4 mi!

"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford

Yeah I can keep up!:Thumbup:
gtspowerstroke is offline  

Quick Reply

Register Now

In order to be able to post messages on the Diesel Truck 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:


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