1988 E350 sputtering issue
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2nd Gear
Joined: Feb 2026
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1988 E350 sputtering issue
Hi I just had my in tank pump changed. After roughly 60 miles in town I tried hitting the interstate. It wants to sputtering getting up over 45/50 mph. And when I came to a stop after getting off the interstate it stalled out. Was able to start it up after a minute of trying. Runs fine at 35/40 mph in town. Trying to see if there's something I can do before the shop i had dob it can get it in in a few days. Normally try to do work on my own when I can but being in MN and not having a garage I can fit it in I lose it to the weather sometimes. Thanks for any help you can give me.
Hotshot
Joined: Jul 2020
Posts: 10,519
Likes: 2,654
From: Near Salt Lake City
You could test the EEC and any codes present
You could test the fuel pressure and replace the filter less reservoir if needed
You could look up the reservoir recall and see if yours was involved
I would drive it around with a fuel pressure gauge taped to the windshield for 2 days
Fuel may not be your problem at all, but a pressure test and a code check is the first thing a shop is going to do
Yours is old enough to receive a "stamp" for big money
At the dealer, our drivability guy would "stamp" them with 1500 for maintenance and injector cleaner / top end service / throttle plate clean
Then hope they stumbled on the real problem during the process
We called our drivability guy "the weatherman"
You could test the fuel pressure and replace the filter less reservoir if needed
You could look up the reservoir recall and see if yours was involved
I would drive it around with a fuel pressure gauge taped to the windshield for 2 days
Fuel may not be your problem at all, but a pressure test and a code check is the first thing a shop is going to do
Yours is old enough to receive a "stamp" for big money
At the dealer, our drivability guy would "stamp" them with 1500 for maintenance and injector cleaner / top end service / throttle plate clean
Then hope they stumbled on the real problem during the process
We called our drivability guy "the weatherman"
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