Hesitation

ANDDOR10

MEMBER
1998 FORD E-SERIES VAN
5.4L
V8
2WD
AUTOMATIC
215,515 MILES

Thanks upfront for your help.

Going up a hill (30 Degree) incline, when I get to 45 MPH the van stumbles as if it were a misfire but there are no codes. It doesn't do it on the regular flat road.

I appreciate your thoughts.

Thank you.

5 Replies

SQM

MECHANIC
6,383 POSTS

Hello,

This could be due to fuel starvation.
Do you know how much fuel you had in the tank when this happened?
It is possible on the steep incline the fuel pump was not able to get proper amount of fuel and cause it to lose power and cuts out.

Try to fill up the gas and see if this issue exists. If it does not, that it was simply a fuel delivery issue. As you know 30 degrees is a very significant amount of incline.

Let me know of any questions.
Thank you.

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Monday, May 16th, 2022 AT 8:07 PM

ANDDOR10

MEMBER
8 POSTS

Hi Sean,

Thanks for replying. I had a 1/2 of a tank of fuel. Also, the fuel pump is about 8 months old plus a new fuel filter was added a couple weeks ago.

I'll wait for your reply.

Thanks.

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Tuesday, May 17th, 2022 AT 5:29 AM

SQM

MECHANIC
6,383 POSTS

Well, since it only happened on the incline it is possible that at that angle the pump was just not producing enough fuel due to not being able to pump enough fuel. If this does not happen any other time, then the issue was simply being on steep incline. Which does happen depending on the fuel pump set up from the factory. Which is not uncommon on these vehicles.

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Tuesday, May 17th, 2022 AT 10:16 AM

ANDDOR10

MEMBER
8 POSTS

Hi Sean,

Thanks for replying. I had a 1/2 tank of fuel. Also, the fuel pump is about 8 months old plus a new fuel filter was added a couple weeks ago.
I'll wait for your reply.

Thanks.

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Tuesday, May 17th, 2022 AT 2:48 PM

SQM