no staŕt
Thread Starter
|
Tuned
Joined: Apr 2006
Posts: 331
Likes: 4
From: grorgetown,in
it doesn't just default to 2300 even if disconnected it still would gradually increase based on ipr%. I find looking at icp voltage works for ruling out sensor. Could have ipr issue and duty cycle will climb like it's working even though the valve isn't opening. Same with icp.
Junior User
Joined: Dec 2021
Posts: 63
Likes: 9
Thread Starter
|
Tuned
Joined: Apr 2006
Posts: 331
Likes: 4
From: grorgetown,in
Try disconnecting the ipr and see if ur readings still look the same u might be seeing default values also monitor voltage while cranking on the earlier models if voltage falls below 10.5 volts while cranking injectors will not fire. Check your voltage reference on one of the easier sensors to get to make sure the pcm is sending it's 5 volts to sensor, they probably are since u don't have any relevant codes to this issue but it doesn't hurt. I'm leaning towards oil issue. I find it hard to believe that u would loose fuel pressure only to the rails let alone both at the same time and you have already confirmed cam sensors is functioning. Disconnect your 42 pin connector and make sure u don't have any bent pins inspect the connectors for anything you have touched u swapped pcm and idm check both those connectors Ive seen countless times where pins have been bent being reinstalled.
Laughing Gas
Joined: Oct 2008
Posts: 1,106
Likes: 154
From: Kansas City KS
i think he meant try cranking with icp unplugged, and report that value. Does it climb or immediately read 2300?
im wondering if its the icp pigtail or wiring there
im wondering if its the icp pigtail or wiring there
Thread Starter
|
Tuned
Joined: Apr 2006
Posts: 331
Likes: 4
From: grorgetown,in
all good now. cps was reading 176 rpms on scanner while cranking. decided just for hec k of it I swapped sensor out with another new one. even though guy just changed it. it fired up. so I put other back in and no start. put my new one in and fired up. so just cause it's reading rpms don't me it's good. thanks for all the info hope it helps someone else
Tuned
Joined: Oct 2020
Posts: 467
Likes: 158
Glad to hear you got it sorted out. Dang what a headache! Keeping this one in mind if mine decides to act up
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Got Data?
Joined: Dec 2012
Posts: 4,269
Likes: 1,404
From: Lake Stevens, WA
This one is a surprising fix. @ballbandit I did not see if you tried to read trouble codes - did you see any codes that might have pointed to the CPS?
Thread Starter
|
Tuned
Joined: Apr 2006
Posts: 331
Likes: 4
From: grorgetown,in
This one is a surprising fix. @ballbandit I did not see if you tried to read trouble codes - did you see any codes that might have pointed to the CPS?
Thread
Thread Starter
Forum
Replies
Last Post