Another new guy needing help
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Another new guy needing help
New to the group and need help. I have a 1999 F350 7.3 Lariat with 355k miles. Just recently it started revving up when I go from drive to park, about 1500rpm for a few seconds. It also wants to stutter on takeoff like it wants to die, but not every time. And yesterday, the O/D off light started flashing on and off and started stuttering again. It reset after a few minutes. Any ideas where to start? Thanks in advance.
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Joined: May 2014
Posts: 27,354
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From: Lake Hartwell, GA
@Pepsiman , welcome to the FTE! Hopefully we can help you get things sorted out.
Without an OBDII scan tool like BAFX , OBDLink MX+ or a wired adapter, there is no way for us or you to know what the codes are that are stored from the O/D light flashing. This is why the O/D light was flashing in your cluster, the transmission is telling you there is something wrong and the code will be a finger pointing in the direction of where the problem is. Chances are the light flashing will become more and more frequent.
You can try to have the code read at a local parts store like AutoZoo or the Irish place, but most of them will not have the proper scan tool that is capable of reading J1850-PWM protocols. Our era trucks are a bit different than most other vehicles.
If you feel the desire to check the stored codes yourself, some information is below to help with that.
Many FTE'rs have gone above and beyond in making your code reading ability as cheap and easy as possible.
Lets start here: FORScan and FSL Q&A by FTE'r BWST
Next stop is: 7.3L PSD Tech Folder
Some more FORScan information is below based on your choice of devices. FORScan is the best application we have available to us as consumers and home wrench turners. Some of the other choices for applications are not as powerful or will only read a select few codes.
FORScan
Again, welcome to the FTE and we are eagerly looking forward to helping you out, but we need you to do some leg work for us in order to get you to a viable resolution.
Without an OBDII scan tool like BAFX , OBDLink MX+ or a wired adapter, there is no way for us or you to know what the codes are that are stored from the O/D light flashing. This is why the O/D light was flashing in your cluster, the transmission is telling you there is something wrong and the code will be a finger pointing in the direction of where the problem is. Chances are the light flashing will become more and more frequent.
You can try to have the code read at a local parts store like AutoZoo or the Irish place, but most of them will not have the proper scan tool that is capable of reading J1850-PWM protocols. Our era trucks are a bit different than most other vehicles.
If you feel the desire to check the stored codes yourself, some information is below to help with that.
Many FTE'rs have gone above and beyond in making your code reading ability as cheap and easy as possible.
Lets start here: FORScan and FSL Q&A by FTE'r BWST
Next stop is: 7.3L PSD Tech Folder
Some more FORScan information is below based on your choice of devices. FORScan is the best application we have available to us as consumers and home wrench turners. Some of the other choices for applications are not as powerful or will only read a select few codes.
FORScan
- FORScan Instructions - PC
- FORScan Lite Instructions - Android
- FORScan Lite Instructions - iOS
- FORScan Data Log Conversion
- FORScan + FORScan Lite: Class Tutorial Q&A
Again, welcome to the FTE and we are eagerly looking forward to helping you out, but we need you to do some leg work for us in order to get you to a viable resolution.
Cargo Master
Joined: Oct 2007
Posts: 2,712
Likes: 107
From: BoCoMo
How long have you owned the truck? If very long you will know the sounds and smells and how it acts.
I believe that the revving and OD light may be two different issues.
Take things slow and do not throw money at this, we will narrow this down.
Have you every had the Exhaust back flow sensor and tube cleaned out??
Welcome to guzzle's Exhaust Backpressure Sensor Cleaning Maintenance Web Page
Is there any oil around the ICP (Injection Control Pressure Sensor) connection?
I believe that the revving and OD light may be two different issues.
Take things slow and do not throw money at this, we will narrow this down.
Have you every had the Exhaust back flow sensor and tube cleaned out??
Welcome to guzzle's Exhaust Backpressure Sensor Cleaning Maintenance Web Page
Is there any oil around the ICP (Injection Control Pressure Sensor) connection?
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So I got FORScan lite, pulled codes P1690, P1780, and P0500. I changed to Wastegate solenoid and harness and the vss sensor. I reset the codes and P1780 went away but the others didn’t. No SES or CEL. Truck has ran great for 3 days now so not sure if anything else needs done. Also, my alternator is only putting out 13.8, and with headlights and a/c on its 13.4. This seems low to me but not sure.
Cargo Master
Joined: Oct 2007
Posts: 2,712
Likes: 107
From: BoCoMo
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