Without warning....it just quit
Thread Starter
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Senior User
Joined: Jul 2008
Posts: 212
Likes: 0
From: Cumming, Ga
Without warning....it just quit
Guys,
My 95 4.9 E40D just plain quit without warning on the expressway yesterday. I was running about 70, 3/4 tank of gas, no check engine lights, normal tempature, no noises...it just quit. It will turn over and I hear the fuel pump energizing but it won't fire. I tried switching tanks but it still made no difference. Where do I start?
Scott
My 95 4.9 E40D just plain quit without warning on the expressway yesterday. I was running about 70, 3/4 tank of gas, no check engine lights, normal tempature, no noises...it just quit. It will turn over and I hear the fuel pump energizing but it won't fire. I tried switching tanks but it still made no difference. Where do I start?
Scott
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Guys,
My 95 4.9 E40D just plain quit without warning on the expressway yesterday. I was running about 70, 3/4 tank of gas, no check engine lights, normal tempature, no noises...it just quit. It will turn over and I hear the fuel pump energizing but it won't fire. I tried switching tanks but it still made no difference. Where do I start?
Scott
My 95 4.9 E40D just plain quit without warning on the expressway yesterday. I was running about 70, 3/4 tank of gas, no check engine lights, normal tempature, no noises...it just quit. It will turn over and I hear the fuel pump energizing but it won't fire. I tried switching tanks but it still made no difference. Where do I start?
Scott
Do you mean you can hear the fuel pump run for one second and quit when you turn on the key or do you mean you can hear it run all the time the key is on with the engine not running?
If it is the second part of the question then I would say you lost the PCM Computer.
If it is the first part of the question then I would say you have a bad PIP sensor in the distributor.
May not be either one but the above would be your best bets.
Thread Starter
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Senior User
Joined: Jul 2008
Posts: 212
Likes: 0
From: Cumming, Ga
Thanks for the responses
Yes, I do hear the fuel pump energize and continue to run.
No, the engine will not run after it cools, it will crank but won't start.
I did pull the cap and rotor off to look for moisture or other signs of trouble but nothing was obvious. What does the PIP look like and how do I get to it?
Thanks, Scott
Yes, I do hear the fuel pump energize and continue to run. No, the engine will not run after it cools, it will crank but won't start.
I did pull the cap and rotor off to look for moisture or other signs of trouble but nothing was obvious. What does the PIP look like and how do I get to it?
Thanks, Scott
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Then I would say you have a bad Computer.
To get to the PIP you have to pull the distributor out and completely take it apart.
But you do not have to worry about the Ignition system if the fuel pumps run all the time the key is on with the engine not running.
To get to the PIP you have to pull the distributor out and completely take it apart.
But you do not have to worry about the Ignition system if the fuel pumps run all the time the key is on with the engine not running.
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Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
air, fuel and spark are the three things needed for an engine to run.
an engine with bad compression will still run.
an engine with bad compression will still run.
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Cargo Master
Joined: Jul 2009
Posts: 2,541
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From: Des Moines
Do a compression check anyway- it won't hurt. And have you tried checking spark strength? If there's a weak spark the problem is likely still in the ignition circuit.
Logistics Pro
Joined: Sep 2009
Posts: 4,821
Likes: 53
From: Fulton County, Pa.
True but it depends on how bad the compression is and how many cylinders have it. I believe 90 PSI is the minimum needed- I'm sure that can vary by a few PSI and still be okay, but basically anything lower than that is a dead cylinder.
Do a compression check anyway- it won't hurt. And have you tried checking spark strength? If there's a weak spark the problem is likely still in the ignition circuit.
Do a compression check anyway- it won't hurt. And have you tried checking spark strength? If there's a weak spark the problem is likely still in the ignition circuit.
Cargo Master
Joined: Jul 2009
Posts: 2,541
Likes: 54
From: Des Moines
I may have been wrong about the 90 PSI- that's why I said "I believe it's 90" and not "It's 90." 
And it could depend on the engine I suppose- most engines I have experience with, 90 [or thereabouts] is the minimum.
And it could depend on the engine I suppose- most engines I have experience with, 90 [or thereabouts] is the minimum.
Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
did not run well but it did run.
drove it from l.a. to san diego on the interstate.
you have mentioned the three things you think you need to have an engine run before and i am just trying to clear things up for you.
Cargo Master
Joined: Jul 2009
Posts: 2,541
Likes: 54
From: Des Moines
i have bought and driven home a car with a v8 and 2 dead cylinders.
did not run well but it did run.
drove it from l.a. to san diego on the interstate.
you have mentioned the three things you think you need to have an engine run before and i am just trying to clear things up for you.
did not run well but it did run.
drove it from l.a. to san diego on the interstate.
you have mentioned the three things you think you need to have an engine run before and i am just trying to clear things up for you.
I wasn't trying to say that you were completely wrong, and I'm not trying to start an argument here- just making the point that bad compression can and does keep an engine from running depending on how bad it is.
Logistics Pro
Joined: Sep 2009
Posts: 4,821
Likes: 53
From: Fulton County, Pa.
Apologize if anybody thought I was saying they were wrong, was just trying to list what me experience was with the compression issue. For what it's worth, just got a new message from him & now he tells me the entire left side is only showing about 60 - 65 lbs. I'm starting to get that 
feeling. Still say it was running great before I took it in to them.
feeling. Still say it was running great before I took it in to them.
