91 f150 power loss - Truck Engine Repair


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91 f150 power loss

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jackbass
New User

Sep 9, 2010, 6:15 PM

Post #1 of 3 (3532 views)

91 f150 power loss	Sign In

1991 f150 302 5spd. today runs ok. Tomorrow i will get speed up and it boggs down, jerks & jumps. installed new plugs,wires,dist. cap,button,fuel filter,Tp sensor, fuel filter. Performed self-test reads code98 electronic pressure control driver open in PCM(E40d) also error code -Tp sensor low voltage. Any ideas?

Sidom
Veteran / Moderator
Sidom profile image

Sep 9, 2010, 10:39 PM

Post #2 of 3 (3524 views)

Re: 91 f150 power loss	Sign In

Ok....I gotta know.....If everything is running good right now......Today...... How could you possibly know that it's gonna do all that tomorrow....

Man you have some serious powers.......

The 1st thing you need to find out is if the power loss is due to a trans or engine problem...... Sometimes not the easiest thing to do...

If it's from the trans then the code would need to be traced down. Most of the tests require a breakout box so it's not real DIY friendly.

If it's an engine problem, the root needs to be determined. If it's electrical & not mechanical, then once again that code would need to be traced out to be sure it's not part of the problem...

What you could do would be to make sure you have a good battery, all the connections, especially grounds are clean and secure. Take a look at the engine & trans harness, make sure everything is tight & undamaged. Make sure all the fuses are good.

Try to eliminate as much as possible on your end until you get up against the "special tools required" wall and then, unfortunately you'll be stuck.....

(This post was edited by Sidom on Sep 9, 2010, 10:39 PM)

melkinny360
User

Jan 21, 2011, 12:43 AM

Post #3 of 3 (3391 views)

Re: 91 f150 power loss	Sign In

Thread is about a Ford F-150 - not a Honda, Nissan or Escort (Mazda) - appreciate the thoughts but pointless and removed,

Tom

(This post was edited by Tom Greenleaf on Jan 21, 2011, 3:44 AM)

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