Question about 1994 Ford F350 Crew Cab

4 Answers

Static throttle misfire

I have a 1994 ford e350 motorhome 460 cid.engine cuts out and sometimes dies at idle or mild accelaraton.feels like random misfire or ign.switch is turned off than on.have already replaced sparkplugs,dist.cap,rotor,ign wires,fuel filter,ign module,dist accembly,coil,i took it to ford dealer and they couldnt fix it.please could you help me

Posted by on

  • 2 more comments 
  • David Melrose Jan 07, 2009

    1996 Ford E-350 van with 7.5L intermittantly acts like ignition is totally cutting out for about a tenth of a second when at idle or under slight throttle. Intermittant individual cylinder missing under WOT acceleration. Only 45,000 miles on the vehicle which is driven mainly on short trips in tropical location.

  • E S Feb 22, 2009

    My 95 E-350 does the exact same thing! Will start here...I've done EXTENSIVE research on this problem. Since we have the same thing exactly down to the PCM not communicating to the "scan tool".
    I'm going to get a fuel pressure reading from the fuel rail just inside the the motor cover. Warnings associated with this type of test!

    Too much pressure can "load up" the cylinder and produce a "random" misfire. I can start my e-350 fine and it seems as though the problem starts 100 seconds after it has been sitting for some period of time longer than a couple of hours. Also it doesn't matter if it's a super cold day or warm. After the van say builds up fuel pressure 100 sec after running you can cut if off immediately and begin all over again. The problem shows immediately. I would say this is not a warm or cold thing and not an EGR thing. No EGR in neutral / park and this is were we see it plus in overdrive or cruising in 3rd with minimal load. Makes sense doesn't it. We'll see after i go and purchase a fuel pressure gage set.

    I got the codes from the self
    test watching the dash light and came up with the EGR Position Sensor.
    I replaced that and no change. After another forum guy said
    to replace it....but didn't explain why i was getting the "miss" while
    in park/neutral. EGR doesn't flow in park/neutral! Just wanted my
    money. Also spent 1k for distributor/plugs and other maintenance with
    no change. So I have also replaced the EGR solenoid as well. Gone down
    that EGR road. Started to think it's my coil or ignition after thinking
    that i loose volt at that vacume can just to the left of the EGR
    solonoid while this "miss" occurs. I put my vac tester on the top
    nipple which when this can opens up will allow vac to pass through.
    When the miss happens i loose vac instantanously since the can looses
    Also thought this could be an ECM problem like you since my
    "X-Ray" brand scanner will not work on this van. However works on my
    other cars fine??? What fixed your E-350 please tell !!!

  • E S Apr 19, 2009

    One thing i can say is the fuel pressure test where you turn the key and the pump should produce pressure in the line before starting does give the pressure. However this pressure should stay UP steady for no less than 5 minutes so the manual says. My pressure falls immediately after returning the ignition to previous state.

    So i thought i might send my injectors to to get them diagnosed and repaired. Report listed bad patterns but NO leak down on any of them. So what would cause the fuel pressure to drop? Could this be the fuel pressure regulator even thought when i did the vac test on the regulator it changed pressure in relation to vac being added and removed. I would rather replace these items before going to the tank to replace the fuel pump. thanks!

  • Mike P Jun 15, 2016

    Check the EEC-IV engine control module. The 90's era modules develop leaky capacitor(s) on the circuit board and fail. I also replaced most parts on the engine with no change. Finally discovered there was a problem with these modules. Remove the module from the firewall where the main wire harnesses connect. Take off cover and examine the circuit board. Look for the tell tale signs of the leaking capacitor(s) including a fluid stain ring around it on the circuit board and green crud corrosion where it solders onto the board. Mine caused erratic misses about every 20-30 seconds at idle and random misses under load on grades...and stalling once in a while at idle. I had it rebuilt for $216 and it runs normal again.



4 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Change the ignition modules that helps 955 of the miss, I then changed fuel pump as it was heating up and I feel stress the ign module curcuits.

all fine now,, Spend a fortune up till this point.. plugs, wires, injectors, relays, coil, EGR, o2, exhaust manifolds....urgh

Posted on Oct 28, 2009

  • danny hicks May 14, 2013

    my 460 has 30,000 miles, ran perfect then lost power and died. now it won't start at all. it trys but will not has fire and anyone help.poppa mike fuel. can

  • danny hicks May 14, 2013

    it has fire and fuel


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 94 Answers

Possible bad fuel pump or fuel pump relay.

Posted on Dec 03, 2008

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

Wish I could answer your question, then I would have my problem solved. I have a 1994 For E-350 w/ 460 engine & exactly the same problems. Replaced all the same items as you explained, still have the same problem. If you find the problem, please let me know. This is also a Rockwood Motor Home. Very frustrating. I cannot even find a Ford Dealer to check out the computer on this thing, they are always to busy .
E-Mail me at
Thank You
my name is Jerry Noerr

Posted on Feb 28, 2013

  • Mike P Jun 15, 2016

    Check the EEC-IV engine control module on it. The early to mid 90's control modules develop over time a problem with leaking capacitor(s) on the circuit board. This will cause a seeming random miss at idle and under load. I replaced about every part on the motor without success until I read a post about it. Remove the EEC module from the firewall in the engine compartment and open the top plate. Look for the tell tale signs of a leaking capacitor including a fluid ring around it on the circuit board and green crud corrosion where it solders onto the board. I had mine rebuilt for $216 and it runs great again. The capacitors go bad over time and eventually leak. Have all 3 (in my case one of 3 had leaked) replaced if you have it done.


  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

Ford 7.5 ltr engines have 2 fuel pumps a high pressure and a low pressure when replacing the pump did you replace both?

Posted on Sep 20, 2013

  • Jeff Morin
    Jeff Morin Sep 20, 2013

    Ford 7.5 ltr engines have 2 fuel pumps a high pressure and a low pressure when replacing the pump did you replace both?


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Starts up but runs rough, exhaust smells, and when you give it gas it wants to shut off.

How To Fix P0300 random misfire codes in your car ...

? 2:56
Feb 5, 2010 - Uploaded by Scotty Kilmer
Scotty Kilmer, mechanic for the last 46 years and counting, shows how to fix your car if the check engine light ...

P0300 - OBD-II Trouble Code - RepairPal > Encyclopedia > OBD II Codes
OBD II Fault Code. OBD II P0300. Fault Code Definition. Random, Multiple MisfireDetected. Symptoms. Check Engine Light flashing; Rough running, hesitation ...

P0300 - Check Engine Light Diagnostic Trouble Code ...
The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. The computer can also normally identify the ...

Random-Misfire Page

Jan 24, 2016 | Cars & Trucks

1 Answer

Motorhome runs 2 miles down highway then will sputter. I put shifter in neutral then turn ignition off then back on and the engine runs great for another 2 miles and it happens again.

I had this problem, it was water in the gas tank from condensation from sitting .
I had to replace the gas tank which had rusted through, and have a supply of fuel filters to change regularly, I also had to regularly add additive to the tank to absorb moisture ( I think they didn't work).
I surely hope that is not your fix, but it was mine.
God bless your efforts.

Sep 04, 2015 | Ford Cars & Trucks

2 Answers

Ford 460 engine

You did not supply the year of the engine. Many defects are picked up by the self-diagnostics in models which have self-diagnostics.

You may not notice that the engine is still missing at higher speeds. One of the tests that can be run is a cylinder-balance test. This electronic test systematically disables individual cylinders and shows how much power each cylinder is contributing to engine power. It will pinpoint the problem cylinder.

It is a lot easier than removing each plug to examine misfires. A Noid light is a tester for fuel injector harnesses. A Ohmmeter can test the fuel injector for continuity.

Once you get a cylinder balance test, it will reduce the testing time and you can concentrate on 1 cylinder.

Sep 23, 2013 | Lincoln Cars & Trucks

1 Answer

E350 v10 econoline

You did not say what year the truck chassis is, so I will give a generic answer.
If the throttle position sensor was at fault, the computer should set a trouble code. So if there are no codes, I would question the fuel pressure or venting in the tank. Fuel pressure could drop off to just enough to keep the engine running but not have enough to rev up. Or the pressure vent valve in the tank may not be working and the tank could be building up a vac. Its also possible the fuel filter is clogged up enough to restrict fuel pressure or volume.
You would need to check base fuel pressure and the condition of the gas tank when the problem occurs which could be tough to do on the road. You could take the gas cap off and see if it will rev up to check the venting. That will probably turn the check engine light on due to the tank being open with the engine running.

May 14, 2013 | Cars & Trucks

1 Answer

1993 f350 460 cid wont start unless you press gas pedal to the floor

my truck starts right up if I hold the petal to the floor but wont start if I don't hold petal to floor

Feb 12, 2013 | 1993 Ford F350

1 Answer

Ck engine light is on and miss fire #5

There are few possibilities that can cause engine misfire issues. It can be issue with spark plugs or faulty spark plugs. Also get the compression test done for cylinders. If any of cylinder shows low compression then required, then that particular cylinder will cause misfire.

Also get obd codes scanned, the error code will let you know which cylinder is misfiring or all cylinders are misfiring.


For your trouble shooting I suggest you to refer the help oinks below. It has step by step details for many engine misfire issues.


Click the link below:-----

Ford Explorer Cylinder Misfire?


Engine Misfire codes on Chevrolet Malibu?


Cylinder 6 Misfire?


Misfire on cylinder 4?


While stop engine idles like cylinder missing?


Ford Explorer 5.0L: Engine Miss?


Oil on spark plugs and car misfires?


Can cylinder misfire Damage the Catalytic converter?


Car misfires and error code P0306 and P0303 is shown?


Chevrolet K1500 No spark, random misfire


2004 Ford F150: Engine Misfire and Lean Code?


1995 Toyota LS: Misfire at idle or low RPM


Toyota Corolla: Random Misfire?


2006 Ford Freestar: Misfire on Cylinder Number 2?


This will help.


Nov 28, 2012 | 1994 Lincoln Town Car

1 Answer

Having Issues with motorhome enging, will not go beyond 30 MPH

Assuming its not a shifting problem with your trans: Have you chkd your fuel filter? Also what is it doing while your trying to gain speed?

Aug 25, 2012 | Ford Econoline Cars & Trucks

1 Answer

Abs rear light stays on

The sensor is located I believe on the differential housing,could be faulty or corroded

Jul 10, 2009 | 1993 Ford Econoline

Not finding what you are looking for?
1994 Ford F350 Crew Cab Logo

2,734 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers


Level 3 Expert

5613 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides