teh 5.0 is running like crap

[J-rod]

started yesterday morning. it was running really rough, exhaust sounded different, and at a stop, idle, it began shaking....i thought it was cuz i was low on gas. put gas in it and still the same. it feels even lower on power than it is. the idle surges, and i can feel it surging at part throttle. i just changed plugs,wires,cap,rotor, last saturday and it drove great up until yesterday morning.

i have a new fuel filter here, just need to get the fuel line tool to swap it out.

could this be a fuel issue? i was thinking it maybe an air intake/vacuum problem but only thing i disconected was the MAF meter and plugged it back in. maybe a vac plug came off from where the smog pump was disabled. if it is a fuel issue has anyone used the seafoam stuff in the gas tank as a fuel system cleaner? ive used it for the crankcase but not fuel system. any other brand like better?

[scott5]

all your plug wires on completely?

[J-rod]

all your plug wires on completely?

yep....triple checked it last night before the ER.

[blkp42e]

TPS sensor

[scott5]

TPS sensor

yea.. that maybe it

[madmaxin22]

dont need the fuel line clip tool, just two small screwdrivers....any vacuum lines come off when you did your tune up??

[J-rod]

dont need the fuel line clip tool, just two small screwdrivers....any vacuum lines come off when you did your tune up??

hmm looked like the tool was needed.

anyways yea i lost a screw that was capping something, but i got a new screw and capped it all....like i said it ran great from saturday-tuesday night.

it was the plugs i have circled here. they were capped and i had to recap one. i think that is smog related. im still learning the 5.0

[coralcoupe1993]

Did you ever change your fuel pump? I have to do that with every FOX I get. I will have a 155lph for sale soon if you want it. It has about 3500 miles on it.

[J-rod]

Did you ever change your fuel pump? I have to do that with every FOX I get. I will have a 155lph for sale soon if you want it. It has about 3500 miles on it.

nope i havent done anything to the fuel system yet. i have a fuel filter ready to go in.

[coralcoupe1993]

nope i havent done anything to the fuel system yet. i have a fuel filter ready to go in.

I had to cycle the key in the vert 3 times before it would build presure when I first got it.

[J-rod]

I had to cycle the key in the vert 3 times before it would build presure when I first got it.

ive never had a problem with anything until yesterday morning/

[coralcoupe1993]

ive never had a problem with anything until yesterday morning/

Most of mine just went over night.

[J-rod]

Most of mine just went over night.

so i now have 3 possibilities

1. fuel pump - ~70-100+
2. TPS - $35
3. IAC - $75

:o

[blkp42e]

id try TPS 1st

[coralcoupe1993]

Test the voltage of the TPS before you take it off. It may be off. I had one that was way over a volt and it did the same thing.

[J-rod]

Test the voltage of the TPS before you take it off. It may be off.

how

and whats it supposed to read?

[coralcoupe1993]

how

and whats it supposed to read?

Between 0.8 and 1.0 V.

Key on test one of the wires going to it with a volt meter.

[J-rod]

Between 0.8 and 1.0 V.

Key on test one of the wires going to it with a volt meter.

will do tomorrow. (raining now and steph is pissed at me so i need to go home and be good.) lol

[coralcoupe1993]

Yea, if it makes you feel better, the drop is running like crap too. On my way in to work today it was dropping power between 2-3k rpms.

[wick]

Did you ever change your fuel pump? I have to do that with every FOX I get. I will have a 155lph for sale soon if you want it. It has about 3500 miles on it.

Thought that was going to me.

Jarad, do you have a check engine light on?