5.4 triton v8 '99 expedition

M

Makdaddymac

New Member

May 28, 2005

323

1

0

orlando

Jan 19, 2008

#1

• Jan 19, 2008

• #1

hey guys, got some quick ?'s about a 5.4 on a 99 expedition....
first the guy wants to know if he can replace the distributor, but i told him its coil pack,so we went to look at it and i couldnt see anything cause it was night time, but i couldnt even see spark plug wires or anything coming off the heads...and i had a little mini flashlight.....im sure the car is coil packed correct?
the main reason he wants to know is because he is lacking power sometimes and tonight it took a long time to crank over, it just spins for like 5-6 seconds and then it fire up, and he says it fires up immeditely every blue moon or so......
could it be a dieing coil pack. what other possibilities could it be...
he changed the spark plugs recently, and fuel filter...

 

faststang90

10 Year Member

Nov 5, 2007

522

16

49

baytown texas

Jan 19, 2008

#2

• Jan 19, 2008

• #2

expedition

they have coil packs they are up by the intake by the vavle covers and inj they run down inside and u cant see them just a single little bolt holds them down . i have replaced some on mine. mine was doing the same thing u would have to turn the motor over and over then it would start then 1 day it just stop running i had it took to a shop that a guy i race with has and he looked at it and it was the fuel pump that went out.also we have a autozone here and they can check the the codes and it will tell u what one it is for free i dont know if u have 1 there hope this helps on the coil packs

 

SVT32VDOHC

waiting for the next hack atta

Founding Member

Nov 22, 2001

3,501

28

119

Motor City

Jan 19, 2008

#3

• Jan 19, 2008

• #3

They are coil on plug. One per cylinder.

 

85ragtop

BTW, I like dudes.

10 Year Member

Nov 29, 1999

823

475

123

NC

Jan 19, 2008

#4

• Jan 19, 2008

• #4

Thread moved.

 

the pony boy

Founding Member

Apr 19, 2002

358

0

16

10512

Jan 19, 2008

#5

• Jan 19, 2008

• #5

if you had a bad c.o.p you would no it.i had one go on me on my old expy and the thing wun chug andbuck at 3000 or so rpm's.i found which one was bad by using a obd2 scanner and chnged it.just a word of caution on those engines there are notorious for spitting out spark plugs so i dont know if your looking at this truck to purchase but thats something to keep in mind if the plugs are not torqued correct.phil

 

68stang351

Founding Member

May 16, 2002

850

9

39

Savoy TX

Jan 21, 2008

#6

• Jan 21, 2008

• #6

One thing you can do if you know what cylinder its misfiring on, is to change the swap out the coil with the one next to it and clear the code. Then when the DTC comes back on see if the misfire has moved to the other cylinder. This will let you know wether or not its a coil.

Those coils are notorious for going out though.

 

M

Makdaddymac

New Member

May 28, 2005

323

1

0

orlando

Jan 21, 2008

#7

• Jan 21, 2008

• #7

there is no code thought,(this is my friends truck)

 

Darkwriter77

Resident Ranting Negative Nancy

5 Year Member

Jul 1, 2005

314

281

134

Apache Junction, AZ

Jan 22, 2008

#8

• Jan 22, 2008

• #8

Sounds like a fuel issue to me. Have you hooked a gauge up to the fuel rail and checked the fuel pressure while cranking, yet?

 

1red95gt

New Member

Dec 22, 2006

31

0

0

Three Rivers, Mi

Apr 10, 2008

#9

• Apr 10, 2008

• #9

+1 my vote is on the fuel pump...