Heres the deal..i have a 99 F150 V6 that i bought 5 months ago...recently I had two EGR senors replace which took care of a check engine light I had on...since then the truck has been acting strangely as if its not getting enough gas when you do quick acceleration..Sometime the truck also acts as though it does not know what gear to be in. Then last Friday night the OD light started flashing on and off...So i took it in and it read a 0708 code which ford came out with a bulliten to change a transmission piston actuator....Today I had them put in the actuator and also complete a service on the transmission including replacement of the filter and adding new fluids/taking out some old. 20 minutes after being on the road the issue started up again and at some points the truck seemed to be acting worse then before. The mechanic also stated that nothing looked wrong with what he saw while replacing these parts. Does anyone have any insight on what this issue may be?? i have alread spent 350 dollars for this and want to avoid huge amounts of time and money for the problem
Thanks
Brian

fire17cous@hotmail.com

 

you have a fault in your transmission

 

I dont understand why they cant tell me this though?? its like the mechanics dont know what their doing....how is this repaired?

 

You likely have multiple issues.

Looking only at the flashing OD light with a P0708 code, you probably need a new TR sensor (mounted on the outside of the transmissions). A flaky TR sensor will also cause the computer to be confused about what gear to be in since that sensor is supposed to tell the computer the position of the shift lever.

I can find no published TSB for a 99 F150 related to DTC P0708.

Is this a dealership or an independent shop?

As far as trhe sluggish acceleration, it might be due to the transmission not downshifting to first or it may be a problem with the engine, for example, restricted or weak fuel flow, improper intake airflow or measurement, weak spark, or something along those lines.

Steve

 

Check the wiring harnesses underneath the truck. My truck did the same thing awhile ago. It was found that one of the O2 sensor wires rubbed against the exhaust manifold. My truck threw 14 codes as well and entered limp mode. Check the 4 O2 sensors by the catalytic converters for fraying, shorted wires. Also - if you find the shorted wires and fix, be sure to replace fuse F1.23. This fuse blew as a result of the shorted O2 sensor. This fuse is part of the transmission circuitry.

I have also heard that the OD light can flash if the wiring in the steering column gets chafed. Based on the year of the vehicle, I would check there if it hasn't already been checked.

Good Luck!

 

Neither of the possible faults you describe, while common enough on these trucks, apply to his situation....

When fault codes are available, it helps if you look them up and understand what they actually mean and what circumstances can cause them.

Professional troubleshooter for thirty years.

Steve

 

projectSHO89,

I was just trying to give him some additional things to check....What makes you a professional troubleshooter??? If his truck just started acting up, chances are there is one thing amiss...something electrical.

I don't appreciate your comments and if you are not going to add any helpful information, I suggest you shut your hole

 

I am speaking from a position of professional experience, not blind ignorance. I also have a thick enough skin not to be personally offended when an analysis I perform needs to be changed due to error or oversight and to not be offended.

I know how complex systems work, how to diagnose them in them when faults occur, and how to repair them. I've made a very good living for thirty years doing so. When you have comparable experience and education, I'll be happy to entertain further conversation with you about it.

I was pointing out that your suggestions, while common on these vehicles, are NOT APPLICABLE to the symptoms as presented. While you were obviously trying to be helpful, you were providing suggestions that would have resulted in wasted time and, possibly, money and are simply irrelevant to the situation.

If you can find the time to extract your head from your orifice in which it is currently embedded, go back and look at your original thread from last December and notice who gave your the initial direction in which to look when your truck was broken.

G'day!

 

sorry guys....i messed up in the code...its not a P0702 it was a P0782 code (2-3 gear shift error) i talkled to a transmission specialist today and he told me most likely need to rebuild the transmission...he stated he doesnt know until he pulls it out becuase it sounds like an internal problem.....sorry about the code missunderstanding...can someone still give me some input..

 

You sound offended to me....I am sorry if I came on too strong but please try to realize I am just trying to help out. When my rig was busted, I was grateful for all of the suggestions I received. Your suggestion was one of many....That's what this forum is about, right?

Take Care.

 

well it looks like all the three estimates and opninons by area mechanics are the same and it looks like either rebuild the transmission or get a whole new unit from ford....not sure if anyone has any ideas before i do this

 

How much will the rebuild and the new unit cost?