Penog1

Hello, I have a 2003 Ford F150 XLT V8 5.4. Starts with no problem from cold, runs fine with no problems. Sometimes if I make quick stop after running and engine is warmed up, when I go to start it it just keeps cranking but won't start. If I wait a few minutes it will start again fine. Doesn't always happen when starting it when it is warm, it has only happened a few times. I'm wondering if anyone has seen this before or has an idea on what it could be. Thanks.

papa tiger

Spark plugs first.

Penog1

Plugs are good.
Had the problem again today. Opened the hood and jiggled the PCM power relay a little, then tried again and it started. Went somewhere, came back out, wouldn't start again, so I repeated the process and it started up again. I'm going to get a replacement for relay. Could that be the sole cause? I'm just hoping it's not the fuel pump. Always a pain having those replaced.

02sport4

Check your battery terminals for corrosion and that there tight. Also try cleaning your maf sensor and IAC

barefootenn9

i am having same problem i have changed fuel filter and the relay,will change pump next.lots of these trucks having this problem

oakshadsows

98 explorer with same problem. battery terminal was corroded which caused it. after cleaning have not had problem. what did you do ?