RUNS BAD MORE OFTEN UNDER A LOAD

1997 Ford F-250

Tiny

scottknavel

February, 4, 2013 AT 9:36 PM

Runs bad more often under a load

FOUND 4235 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

11 Answers

Tiny

scottknavel

February, 4, 2013 AT 9:40 PM

I have replaced the coil controle module cap rotor plugs and wires feul pump and filter

Tiny

ASEMaster6371

February, 4, 2013 AT 11:13 PM

More info please? Is the check engine light on? Recent services?

Roy

Tiny

scottknavel

February, 4, 2013 AT 11:25 PM

No check engine light on it seems to be at its worse under a load

Tiny

scottknavel

February, 4, 2013 AT 11:28 PM

It idles ok you can hear a little miss though not all the time it has gotten worse

Tiny

ASEMaster6371

February, 4, 2013 AT 11:30 PM

Ok, recent service? How old are the plugs/coils?

Roy

Tiny

scottknavel

February, 4, 2013 AT 11:39 PM

All new I have replaced coil, controle midule, cap, rotor, plugs, andwires, feul pump front tank and filter and all the relays in the fuse box under the hood

Tiny

ASEMaster6371

February, 4, 2013 AT 11:49 PM

Ok, I assume it is a V6.

Control module? New and did you get it flashed?

Injectors could be fouled. Have them cleaned professionally.

Additive rarely work and is not effective.

Did you do a compression test?

Roy

Tiny

scottknavel

February, 5, 2013 AT 12:07 AM

Its5.8engine I did not flash the module what does that mean? Ok on the ijectors is there a way to test them?

Tiny

ASEMaster6371

February, 5, 2013 AT 12:11 AM

Ok, sorry, I thought you meant the pcm. Thought it was a v6.

Flashing is the programming in the computer. Just like your home computer, there are updates to yours as well.

Roy

Tiny

scottknavel

February, 5, 2013 AT 12:17 AM

With it idleing with hood up you can hear a miss and at the same time it misses I can hear a noise soubds like somthing in the top end

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