Question about 1992 Ford F150 SuperCab

1 Answer

1992 Ford f150 4.9

I just replace the pcm on the truck for my farther. It started once and ran as normal. The reason for replacing it was that it was causing the truck to over load it self and cause eratic stall's. It finaly got to the point where it would not run at all. I work for GM in the part's dept. One of our tech's said there was in internal ground in the pcm after doing some diagnoseing. If any one could help or point me in the right direction i would greatley appreachitat it

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 31 Answers

Check the nuetral safety swich this is one of many things that is over looked when this type of problem occurs. You can also go to Auto Zone and they will hook a code meter up to your dads truck and may be able to tell you exactly what the problem is. The code meter hook up is usually under the steering colum. on the under side of the dash. If it were my guess, I would say it is the catalac converter may be plugged up casing it not to have the appropriate amount of pressure. When the converter is plugged it creates back pressure casing it to run hot and preventing it from starting. Good Luck. I hope this helps....

Posted on Oct 18, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Car wont start after replacing pcm


What was the reason for replacing the PCM? The best way to fix the PCM for a car is to have it reflashed, that way you will know it will work
on your car. If you replace the PCM it will need programed for your car
with the vin # put in.

Mar 16, 2013 | 2005 Ford Taurus SEL

1 Answer

Truck cranks but won't start


If your fuel is running all the time the PCM is bad if you take your relay out and the fuel pump stays running its a short

Jan 06, 2013 | 1990 Ford Bronco

1 Answer

97 ford ranger code po118


If by ECS you are referring to the engine coolant temp sensor, the most common cause is that the coolant temp sensor goes bad and usually bias' towards the cold side of its sensing range which is around minus 40 degrees,(-40F). When this occurs the PCM had to over fuel to counter act the extreme cold in order to start the engine. But in normal temp areas this strategy just floods the engine. When the sensor is unplugged, the PCM substitutes the missing signal with a generic fail safe protocol which is preprogrammed. If the sensor is -40F, the vehicle just thinks its in Alaska, it doesn't know it has a bad sensor the PCM is just reacting to what the sensor is telling it. Its possible that either the wiring, or sensor connector has and open, short, or high resistance which may be the reason why replacing the sensor didn't work. Or maybe the wrong sensor was replaced, there should be two coolant temp sensors, one for the gauge, and one for the PCM. The PCM sensor is the one in question, to be honest, the PCM could be causing this as well, but at least you have a place to start.
I hope this info helps!~subyguru~

Mar 31, 2012 | Ford Cars & Trucks

1 Answer

High Idle


iac or wiring or pcm or coolant sensor get a iac from the dealor
if the rpm goes normal with scantool hooked up then try a pcm from wreckers

Feb 24, 2012 | Ford Thunderbird Cars & Trucks

1 Answer

Having cold start problems 2006 h.d. f350 ,truck is parked in heated garage all night,starts normal in the a.m.,sits outside all day at work,soon as temp falls below 30 F it starts then stalls immediately...


glow pug indicator and glow plug themself are 2 seperate system
test for power at the glow plug harness conector 1 each side over valve cover
test light clamp on batery neg test each wire going to relay for power on both side
then quick check on glow plug end test light clamp on positive test all wires
going to glow pug on each side f this does ligtht up the test light system should be o.k.
for the FICM i have used a hair blower on hi to warm the surface of if to start up a few of
these motors to get them back to the yard for replacment afterward
run a ffeet of these from 250 to 550 lots of problem and work 26 units
good luck

Feb 25, 2011 | 2006 Ford F 350 Super Duty

1 Answer

Having cold start problems 2006 h.d. f350 ,truck is parked in heated garage all night,starts normal in the a.m.,sits outside all day at work,soon as temp falls below 30 F it starts then stalls immediately...


Follow your glowplug wires towards the Firewall. The glowplug wire goes into a Timer which is suppose to be internally regulated by outside Temperature and feedback from the glowplugs.

When you are in Cold weather, the Timer is suppose to keep the glowplugs on longer. When the engine is fully warm and you shut it off, you will notice it starts up like a gas engine. First you want to remove your glowplugs and check them by using Jumper cables and heating them up.

Be careful because they can melt or distort if on too long. I usually pull out 4 at a time because it is a comparison test and when you find the quickest, brightest glowplug you measure the others against it. When the glowplug stays dark or does not heat as quickly it is bad. Remember when it is in the engine the glowplug only has bumps of current coming from the Timer to warm up.

Once you are confident the glowplugs are okay, try starting the truck. Or for good measure, just change the Timer, but it will add to the cost.

As for the engine light, if you mean the "check engine" light, you can get that checked free at Autozone, Oreillys, or Advance. I believe Advance may be better equipped to test the PCM.

I hope my solutions are very helpful to you and thanks for using this service.

Feb 25, 2011 | 2005 Ford F 350 Super Duty

1 Answer

1992 ford econoline van wont start power going to coil coil good, no power coming out of coil have replaced the following: pcm ecm coil distributor condenser ignition switch ignition module key...


how can you say that you have power going to the coil and lot leaving it and still say its good?
kinda answered your own question there i think
just my opinion...
hope this helps

Jan 23, 2011 | 1992 Ford Econoline

2 Answers

1992 oldsmobile cutlass, ran fine, except the clock stayed on all the time, and ran the battery down, then, I got a gas leak, and had to replace the gas tank, then, replace the fuel pump, now, it starts,...


3300? When it won't start have you checked it for spark. It might be a crank sensor. We need to determine if the reason it won't run is because of no spark or no fuel.

Apr 21, 2010 | 1992 Oldsmobile Cutlass Ciera

Not finding what you are looking for?
1992 Ford F150 SuperCab Logo

Related Topics:

68 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

60769 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Fordexpert

Level 3 Expert

5331 Answers

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

Answer questions

Manuals & User Guides

Loading...