PLEASE HELP ME FIGURE OUT THE PROBLEN

2002 Ford F-150

Tiny

HollySA12

July, 7, 2012 AT 1:31 AM

My 2002 f150 4.2l v6 is having problems. It will drive fine then lose power. U can floor it and it will not move it will only idle. Then it will catch power and go. It does this often now help please

FOUND 14751 RELATED QUESTIONS

10 Answers

Tiny

ASEMaster6371

July, 7, 2012 AT 1:51 AM

Check fuel pressure.

Check for back pressure from cat converters.

Roy

Tiny

HollySA12

July, 7, 2012 AT 1:55 AM

Done did cats r fine and fuel pressure is good

Tiny

ASEMaster6371

July, 7, 2012 AT 2:01 AM

Ok, what is the pressure on the fuel and the back pressure on the cats?

Roy

Tiny

HollySA12

July, 7, 2012 AT 3:06 AM

I am not sure my dad did it and he is a mechanic. But this problem has stunned us we have checked and changed everything. Lol. At a lost really I wanna say fuel pressure was 35

Tiny

mikederouin88

July, 7, 2012 AT 8:46 AM

Did the car run hot?

Tiny

tachains

July, 7, 2012 AT 9:43 AM

There could be a build up of debris in the fuel tank when the fuel pump is drawing fuel it will catch the debris and cause low pressure put a fuel pressure gauge on it and check pressure as you are driving it

Tiny

HollySA12

July, 9, 2012 AT 12:41 AM

We done the fuel pressure at autozone and they said it was fine for that truck. Fuel tank was cleaned bout 4 days ago we put a new fuel pump in it

Tiny

HollySA12

July, 9, 2012 AT 12:50 AM

No truck is not running hot

Tiny

HollySA12

July, 9, 2012 AT 12:50 AM

No truck is not running hot

Tiny

miltondacusjr

November, 16, 2012 AT 6:43 PM

Got the EXACT same problem on a truck im working on, getting codes P0174, P1131, and P0135, not running hot, fuel press around 35-40 while driving down the road, when it stalls out to nothing, its still idling but wont accelerate, the fuel pressure DOES NOT change at all as this is happening, then after a few seconds. Vrroom right back to running perfect. What the hecks going on?

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