Can someone please help me!
Thread Starter
|
New User
Joined: Mar 2009
Posts: 11
Likes: 0
Can someone please help me!
I have a 1989 F-150 that I recently rebuild. I added stainless Steel pipes and other than new gaskets for the whole motor and heads I left it stock. I have 1100 miles on the motor now and another problem has come about.
The motor runs fine at idle. Its a 5 speed 4x4 and seems to be great under 2500 rpms. But it seems to lose all power and die after reaching 2600. I have replaced the throttle
positioning senor with no effect. It seems to be loading up, but I don't have a carb. Its injected? Can anyone help me with this problem? Email at richardshull166@yahoo.com if you think of something.
The motor runs fine at idle. Its a 5 speed 4x4 and seems to be great under 2500 rpms. But it seems to lose all power and die after reaching 2600. I have replaced the throttle
positioning senor with no effect. It seems to be loading up, but I don't have a carb. Its injected? Can anyone help me with this problem? Email at richardshull166@yahoo.com if you think of something.
Thread Starter
|
New User
Joined: Mar 2009
Posts: 11
Likes: 0
Hey thanks for the reply. Let me ask you something. Is it possible that maybe the injectors are in the wrong order. Could it be throwing fuel to the wrong cylinder causing this. I will check everything you told me about. Drop me an email at Richardshull166@yahoo.com. This truck is worrying me to death.
Thanks for your help
Thanks for your help
Thread Starter
|
New User
Joined: Mar 2009
Posts: 11
Likes: 0
I have checked all that and changed the fuel filter. Under power it is getting fuel fine. It just doesn't seem to be sending it to the right place. I have checked the timing twice a week for a month that, isn't the problem either. I wonder about the order of the injectors being wrong. Is it possible that the injectors could be in the wrong order causing a misfire and feeding fuel to the wrong piston. I wonder if its possible for it to only happen at or below 2500 rpms. It really seems as if a carb was loading up but that isn't possible without one.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Check fuel pressure at the fuel rail, if its not maintaining 40psi as rpms increase then the motor will starve and lose power. If the motor idles smoothly there's nothing wrong with the injectors, the EFI on this truck fires them in batches of 4 anyway so you could have any small block ford cam in there and it would still run.
