Hard Starting Issue

[svtfiveoh]

I have a 2003 Ford Expedition with a 5.4 150k . I bought it about a year ago. Im having a hard start issue where it will crank about several times and then starts, Once it starts it sputters a bit and then smooths out. It runs perfect and idles perfect, I dont have any power issues and overall is a good vehicle. When I bought the Exp it had this issue, I have swapped out the Fuel Pump,Fuel Filter,Fuel tank Cap,MAF. I cleaned the Throttle body and also cleaned the IAC. The only thing is if I prime it a few times It crank once and start right up, and then sometimes I dont have to prime it and it will start right up with no issues. It stumps me because, Im not getting any codes and it drive perfect.....

Im wondering if new plugs would make a change even tho it runs fine besides the starting issue..

 

[smo0othride]

I have a 2003 Ford Expedition with a 5.4 150k . I bought it about a year ago. Im having a hard start issue where it will crank about several times and then starts, Once it starts it sputters a bit and then smooths out. It runs perfect and idles perfect, I dont have any power issues and overall is a good vehicle. When I bought the Exp it had this issue, I have swapped out the Fuel Pump,Fuel Filter,Fuel tank Cap,MAF. I cleaned the Throttle body and also cleaned the IAC. The only thing is if I prime it a few times It crank once and start right up, and then sometimes I dont have to prime it and it will start right up with no issues. It stumps me because, Im not getting any codes and it drive perfect.....

Im wondering if new plugs would make a change even tho it runs fine besides the starting issue..

What about the check valve or the fuel pump relay?

 

[svtfiveoh]

What about the check valve or the fuel pump relay?

Check valve ? where is that located? Would a check valve cause this starting issue? Also if the relay were defective would that cause the hard start issue???

 

[ELVATO]

Weird, it sounds like it would be the filter, but you've already swapped that out...

 

[svtfiveoh]

yeah I have swapped out the filter several times.. I mean other then a starting problem, It drives great and I get about 18-19 mpg on the highway...

 

[GAINMOB]

could be CoPs

 

[svtfiveoh]

could be CoPs

You think coils would do that ?

Im stumped, I guess I could swap the coils from my mustang since they have the same part #.. and see if they make a difference

 

[GAINMOB]

from what i've read from other people...misfiring may cause hard starts...i could be wrong...someone will get in and inform properly...

 

[svtfiveoh]

from what i've read from other people...misfiring may cause hard starts...i could be wrong...someone will get in and inform properly...

Hmm Not really getting a mis fire. Its wierd because all day today, Its started fine but I know its going to come back.

 

[raree]

I had this same problem. Took about 2000 miles til I started throwing a code. Ended up being COP #7. Swapped it. Problem solved. This is after I changed plugs and my EGR pressure sensor.

 

[raree]

It did progressively get worse and start running rough when it finally reached the point that my CEL came on.

 

[FordCustSrvc]

It did progressively get worse and start running rough when it finally reached the point that my CEL came on.

I’m sorry to hear you had to go through that raree, but I’m glad you solved the problem.

Cory

 

[svtfiveoh]

I’m sorry to hear you had to go through that raree, but I’m glad you solved the problem.

Cory

You should hear of the problems I had with my 2004 Mustang GT,Tranny went out, 4 coils went out, MAF went bad, Rear axle bearing and abs light wont go away. Dealer cant figure out the ABS.


but for some reason I still own it.. I love it !!!
LOL

 

[GAINMOB]

could be CoPs

^^^^^^didnt i say CoPs...i dont know what im talking about but i can remember what others are talking about...dude said he change #7 CoP above and another part...

 

[Expynewbee]

I have same hard starting issue doesn't happen every time runs great after it starts I've replaced plugs and all eight coils. Starter was replaced last year. No engine codes

 

[GAINMOB]

i have to change my fuel pump...then prob is solved for me...slowly getting worse...

 

[svtfiveoh]

i have to change my fuel pump...then prob is solved for me...slowly getting worse...

I was tOld by a friend/ ford mechanic that my fuel pump was getting bad. So I went to ford and bought a new one. It didn't change any of the starting issues.

 

[FordCustSrvc]

You should hear of the problems I had with my 2004 Mustang GT,Tranny went out, 4 coils went out, MAF went bad, Rear axle bearing and abs light wont go away. Dealer cant figure out the ABS.


but for some reason I still own it.. I love it !!!
LOL

I’ve been in the same boat svtfiveoh! I’m sorry to hear your ABS light is staying on. I hope the dealer can find the issue for you.

Cory

 

[svtfiveoh]

A year later and I still have the problem. Put in all new cops and injectors ...

 

[panda24619]

try this, dont know if its been said before. but key to on and wait for pump to stop. then start. i do this EVERY time i start my truck.