Sporadic starting issue
Thread Starter
|
Senior User
Joined: Jan 2011
Posts: 193
Likes: 0
Sporadic starting issue
Hey guys, I have a concern that I need help with. Just last week I had it's replace my PCM, as it was bad, and when I got it back the following seemed weird to be:
1. My chip seemed to be unplugged when they said it was plugged back it...
2. When I start it up sometimes, it had a bump of rpms immediately after I start it but settles back down to idle
3. And it only seems to do it once it has been driven to OT, shutoff and left sitting...
I'm not sure what to do as it is a long drive to any diesel shop to get help... Please, any input would be helpful!
1. My chip seemed to be unplugged when they said it was plugged back it...
2. When I start it up sometimes, it had a bump of rpms immediately after I start it but settles back down to idle
3. And it only seems to do it once it has been driven to OT, shutoff and left sitting...
I'm not sure what to do as it is a long drive to any diesel shop to get help... Please, any input would be helpful!
Cargo Master
Joined: Nov 2010
Posts: 3,244
Likes: 40
So based on your description you are experiencing a lack of power( At least I assume from the #1 listed issue on chip)? What are you getting for boost?
For your romping issue it could be dirty oil, an ICP issue, or tired injectors. A lot of guys swear by a 5w40 T6 Rotella, to get rid of the startup romp. If yall could pull live data that would help a lot.
For your romping issue it could be dirty oil, an ICP issue, or tired injectors. A lot of guys swear by a 5w40 T6 Rotella, to get rid of the startup romp. If yall could pull live data that would help a lot.
Thread Starter
|
Senior User
Joined: Jan 2011
Posts: 193
Likes: 0
Trending Topics
Cargo Master
Joined: Nov 2010
Posts: 3,244
Likes: 40
I have heard about the loping issue with Motorcraft oil. I personally run rotella 15w40, but this winter I am switching to 5w40 synthetic rotella since everyone raves about how awesome it is (especially for this issue that you are describing).
5-9 is about half of what you should be getting.
If yall can run tests for ICP PSI and Duty Cycle, and fuel pressure at idle and also get back in there and look at your up-pipes that would help.
As a simple test yall could unplug your MAP sensor and see if it runs better and has more power. If it does, then you know that your map sensor is bad, or the manifold to sensor hose is internally abraided and closing off reducing PSI saw at the MAP You can blow through this hose with compressed air to see if you feel it on the other side, you can also look through it and see if you see daylight.
5-9 is about half of what you should be getting.
If yall can run tests for ICP PSI and Duty Cycle, and fuel pressure at idle and also get back in there and look at your up-pipes that would help.
As a simple test yall could unplug your MAP sensor and see if it runs better and has more power. If it does, then you know that your map sensor is bad, or the manifold to sensor hose is internally abraided and closing off reducing PSI saw at the MAP You can blow through this hose with compressed air to see if you feel it on the other side, you can also look through it and see if you see daylight.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
More Turbo
Joined: Dec 2002
Posts: 664
Likes: 129
From: Columbia, MD
Is the chip firmly plugged in?
Is the electrical contact for the chip making good contact, and staying put? If it connects to the PCM, perhaps the shop didn't firmly seat it?
Had that problem when I installed my chip.
Had that problem when I installed my chip.
Thread Starter
|
Senior User
Joined: Jan 2011
Posts: 193
Likes: 0
I'm gonna check the map sensor first. But on the next change I'm def switching to 5w40. And I got a new chip bec I never really liked the old one I had anyways so I ordered a custom tunes from dp so ill make sure I install it properly. I will unplug the map sensor and get back to y'all tomorow, BUT won't that set it into limp mode? What are y'all thoughts about a boost fooler? Thanks for everything so far
Cargo Master
Joined: Nov 2010
Posts: 3,244
Likes: 40
I'm gonna check the map sensor first. But on the next change I'm def switching to 5w40. And I got a new chip bec I never really liked the old one I had anyways so I ordered a custom tunes from dp so ill make sure I install it properly. I will unplug the map sensor and get back to y'all tomorow, BUT won't that set it into limp mode? What are y'all thoughts about a boost fooler? Thanks for everything so far
Boost fooler is not needed on your truck. You will not set an overboost code, unless you have upgraded injectors. It is an issue on primarily the SD's, but also the cali trucks.
Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
Dp has great tunes. You won't be hurt on that deal regardless of what we find your issue to be.
Boost fooler is not needed on your truck. You will not set an overboost code, unless you have upgraded injectors. It is an issue on primarily the SD's, but also the cali trucks.
Boost fooler is not needed on your truck. You will not set an overboost code, unless you have upgraded injectors. It is an issue on primarily the SD's, but also the cali trucks.
I have a cali truck how much boost would it take to set a CEL
Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
Just unplug where it says unplug, ignore everything else in the pic
This a picture is from a SD, but the maps are in the same location. Its a simple check.