Question about Ford E-250
Check the voltage at every cylinder and its coil one by one.Any of the one is not getting appropriate voltage.,Either its got loose or overheated .The overheating can be due to many reasons.Oil got leaked or spilled on the injectors.Check the voltage at each coil pack one by one.It should show 12 volts.If its low then this will be the problem and the cylinder has to be replaced.
The other reason for misfiring is Problem is fuel system.The fuel pump or fuel filter blocked.
Check out.Also check the fuel pressure.A oil getting mixed with the gas will make the vehicle misfire.
Another cause of misfire is blocked IAC or Dirty MAF.
That is.Idle Air Control Valve or Mass Air Flow Sensor.
This both has to be checked.
The IAC is located up near the intake and throttle body, it will be a cylinder shaped part that bolts on and has wires going to it. The part is about 2-3 inches long.
It could be a dirty MAF sensor. Clean MAF sensor wire with brake cleaner. The MAF sensor is located near the air filter element. The wires are exposed to the air flow to the engine. Unplug battery for 15 minutes to rest PCM and road test for any changes.The MAF sensor is near the air cleaner box.
It is possible that you have a fuel delivery problem. You will need to check the fuel pressure with a gauge and hose long enough to drive and watch what the fuel pressure is doing especially under a load. Pressure should be around 28-39 psi and rise a little under a load. Could be a weak or faulty fuel pump. If that is the case, replace fuel pump. Use only Ford dealer parts. Aftermarkets don't last or work as well as Ford dealer parts.
Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.
Posted on Jul 14, 2010
a 6ya expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 31, 2016 | 2000 Jeep Grand Cherokee Laredo
Jan 31, 2016 | Cars & Trucks
Dec 25, 2014 | 1996 Toyota T100
Apr 25, 2011 | 2002 Ford Mustang
Apr 16, 2011 | Buick Regal Cars & Trucks
Fig. Engine Ignition, Page 01 (2002, System overview)
Fig. Engine Ignition, Page 02 (2002, Duratec-VE)
Fig. Engine Ignition, Page 03 (2002, ZETEC-VCT)
Feb 22, 2011 | 2002 Mercury Cougar
Feb 11, 2011 | 2002 Toyota Tacoma
Aug 11, 2010 | 2002 Ford Taurus
Sep 26, 2008 | 1996 Dodge Caravan
Aug 08, 2008 | Volkswagen Jetta Cars & Trucks
26 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: