Topic Sponsor

Intermitent start problem

Thread Tools
 
Search this Thread
 
Old Jul 8, 2019 | 09:04 PM
  #1  
1995pita's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2019
Posts: 1
Likes: 0
Default Intermitent start problem

Hello new to this forum and forums in general.
1995 F150 4x4 with a 5.0 engine mass air and automatic.
I am having a starting issue. sometimes it won't start turn on the key fuel pump cycles engine turns fast like it should but no start.
This happens hot or cold.
I have sprayed starting fluid in the intake when it wouldn't start and it won't start on it either.
After some time anywhere from five to forty five minutes it will start.
I started to check the coil for voltage when i heard the fuel pump cycle again and it started right up and runs perfectly when it starts.
every time it doesn't start its the same thing eventually you hear the fuel pump cycle a second time and it will start.
I am out of ideas and I hate to just start swapping parts.
Please help.
Reply
Old Jul 8, 2019 | 10:17 PM
  #2  
Steve83's Avatar
Member
 
Joined: Jan 2018
Posts: 11,256
Likes: 1,770
From: Memphis, TN, Earth, Milky Way
Default

Originally Posted by 1995pita
1995 F150 4x4 with a 5.0 engine mass air and automatic.
That's not enough detail, and it all needs to be in your signature as this caption explains:


(phone app link)
Originally Posted by 1995pita
sometimes it won't start turn on the key fuel pump cycles engine turns fast like it should but no start.
This will be MUCH easier if you take a few extra seconds to try to use normal punctuation & capitalization so we can understand you better.

That description sounds like an ignition or EEC fault, but EEC failures are very rare except in '87-93 trucks.
Originally Posted by 1995pita
I have sprayed starting fluid in the intake when it wouldn't start and it won't start on it either.
That suggests an ignition system fault. If the ignition system was working & the EEC was dead, the engine would still run on anything flammable.
Originally Posted by 1995pita
...eventually you hear the fuel pump cycle a second time and it will start.
That suggests EEC, but I still think you should start by diagnosing the ignition system.
Originally Posted by 1995pita
I am out of ideas...
Do you have a Haynes? Now's the time to get one, but read this caption first:


(phone app link)


When you have one, you need to read it cover-to-cover at least once so you know what's in it & where to find things. Right now, you need to follow the ignition diagnostic procedure in this caption because the 2 in Haynes are only for older trucks:


(phone app link)
Originally Posted by 1995pita
...I hate to just start swapping parts.
Don't - that will waste time & money, and make diagnosis harder.
Reply




All times are GMT -4. The time now is 06:24 AM.