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Search: Posts Made By: subford
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 05:40 PM
Replies: 3
Views: 148
Posted By subford
Also check fuse #3 as it could be bad also check...

Also check fuse #3 as it could be bad also check the fuel shutoff Inertia switch as it could be open.

If the fuel system checks out you could have a problem with the ICM or PIP sensor.
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 12:57 PM
Replies: 14
Views: 133
Posted By subford
So you are saying that the 542 & the 565 codes...

So you are saying that the 542 & the 565 codes are KOEO and the 181 and 332 are CM codes.

KOEO 542:
DTC 542 indicates that one of the following has occurred:
No Start:
-- Inertia Fuel Shutoff...
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 12:43 PM
Replies: 14
Views: 133
Posted By subford
When you run the KOEO test it will display its...

When you run the KOEO test it will display its codes twice and then there will be a single pulse and then the CM codes will flash out twice.
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 12:38 PM
Replies: 14
Views: 133
Posted By subford
That would mean that the 565 code is KOEO and the...

That would mean that the 565 code is KOEO and the 181 is a CM code.
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 12:35 PM
Replies: 14
Views: 133
Posted By subford
The 452 code is an CM code only so it will only...

The 452 code is an CM code only so it will only show up after driving the truck.

You are not telling us what the other codes are from.
Are they KOEO, CM or KOER codes?
The same code number can...
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 10:08 AM
Replies: 14
Views: 297
Posted By subford
Did you check the PCM Computer ground wires? ...

Did you check the PCM Computer ground wires?

The PCM Computers ground wires are the two small wires going to the body ground as in the below photo. Also make sure you have the large wire going to...
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 10:01 AM
Replies: 14
Views: 133
Posted By subford
The ASB light is on because of the 452 code so...

The ASB light is on because of the 452 code so something is taking out the the signal train from the rear end or it is not being generated by the sensor in the rear end.

Check the oil gauge by...
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 09:47 AM
Replies: 9
Views: 212
Posted By subford
Idle Air Control (IAC): Electrical control of...

Idle Air Control (IAC): Electrical control of throttle bypass air.

It is used during deacceleration for emission control and to maintain idle RPM.
Has nothing to do with the fuel mixture or the...
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 09:32 AM
Replies: 14
Views: 133
Posted By subford
The braided ground straps are for the radio...

The braided ground straps are for the radio static only and have nothing to do with the operation of any electrical devices.
452 is only a CM code.
Continuous Memory DTC 452 indicates the PCM...
Forum: 1987 - 1996 F150 & Larger F-Series Trucks Yesterday, 08:01 AM
Replies: 10
Views: 295
Posted By subford
If the blower does not turn on at any speed then...

If the blower does not turn on at any speed then you have a bad fuse #9 (30 amp) or a bd selector switch in the dash or and open wire.

First check for power at each end of fuse #9 with a loading...
Forum: 1987 - 1996 F150 & Larger F-Series Trucks 07-23-2016, 07:32 PM
Replies: 3
Views: 148
Posted By subford
Pull the doghouse and jump the oil pressure...

Pull the doghouse and jump the oil pressure switch on top of the engine at the very back.
See if it will run then.
There may be a screw in fuel filter where the fuel line enters the Carb.

The...
Forum: 1987 - 1996 F150 & Larger F-Series Trucks 07-23-2016, 07:04 AM
Replies: 15
Views: 317
Posted By subford
Note the truck will start and run on either a...

Note the truck will start and run on either a black or gray. It just will not run as well on the wrong one.
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 07-23-2016, 06:51 AM
Replies: 636
Views: 7,205
Posted By subford
34 codes can be caused by to much vacuum at the...

34 codes can be caused by to much vacuum at the egr valve.
Lack of vacuum will not cause a 34 code.

The EGR valve is either stuck open or he has and electrical problem at the EGR sensor or wiring...
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 07-22-2016, 01:52 PM
Replies: 636
Views: 7,205
Posted By subford
Does your truck use fuel injectors?

Does your truck use fuel injectors?
Forum: 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 07-22-2016, 01:49 PM
Replies: 636
Views: 7,205
Posted By subford
CM codes do not clear so you must be talking...

CM codes do not clear so you must be talking about the KOEO or KOER code 34:

Service Code 34 in Key On Engine Off or Engine Running Self-Test indicates that the EGR valve and/or EGR Valve Position...
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