Question about 1994 Ford F150 Styleside Supercab

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Check engine code 512

I did an eec-iv test KOEO & have code 512. I had to do the KOEO test because the engine will not run only crank. Thanks for any help. KAM test faild. what does this mean & how can I fix this problem? I have 3 other codes I need help with so,should I ask them separately or all in one question?

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  • Contributor
  • 14 Answers

KAM is keep alive memory. check your battery and see if it is holing enough voltage to keep the memory. If not odds are your pcm is on the way out.

Posted on Jul 13, 2014

Testimonial: "Do you mean,if the battery is holding enough charge then,the PCM is on the way out! KAM is keep alive memory. check your battery and see if it is holing enough voltage to keep the memory. If not odds are your pcm is on the way out. This is your answer.Confusing."

  • Neil Williams
    Neil Williams Jul 14, 2014

    "If not". Do you mean "if it is"? Thanks for your answer.

  • mackamitsu
    mackamitsu Jul 14, 2014

    Yes sorry, local slang. If your battery is holding charge then your ECM is on its way out.

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Run a compression test on the cylinders.If reading is low on any drop a little engine oil into the pot. If compression rises you have compession ring problems. Remove all plugs before you try this and place leads away from engine.

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clean the egr valve port on intake use piece of clothes rack clean the built up carbon on inside of port.

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SOURCE: check engine code of PO430.

P0430 - Catalyst System Efficiency Below Threshold (Bank 2)


What does that mean?
Basically this means that the oxygen sensor downstream of the catalytic converter on bank2 is detecting that the converter is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.


Symptoms:
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook You will likely not notice any drivability problems, although there may be symptoms such as a rough/hard idle when cold.


Causes:
A code P0430 may mean that one or more of the following has happened:

  • The catalytic converter is no longer functioning properly
  • An oxygen sensor is not reading (functioning) properly
  • There is an exhaust leak

Possible Solutions:First, inspect for exhaust leaks.
Next step is to measure the voltage at the oxygen sensor on Bank 2. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.

One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.

Hope helps.

Posted on Jul 12, 2010

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SOURCE: 2008 Ford F450 6.4 code P0088 3 times, ( check

Hello, you might try a new fuel rail pressure sensor. This Code 0088 is for high pressure at the fuelrail. It would be possible to rig a testing pressure gauge to the truck and drive it to see what the pressure really is. If the dealer has a Dyno, he could run it in the shop.

Some of the reports I am reading is the Turbo boost for other owners is starting to max out about 70-75 MPH with a load and usually going up a grade before this light comes on. A certified Pressure gauge would show whether the sensor is tripping too early.

I want to believe there are some specs the Dealer could use to bench test this sensor. But if the end result is buying a sensor and paying Labor you could just go Aftermarket and install a New sensor yourself.

Would like to know the final solution on this.

Posted on Feb 04, 2011

Testimonial: "Thanks, the ford dealer got the same fix, cab off"

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DCL is Data Communincations Link... the communication connection between the computers in the instrument cluster and the rest of the car. its usually caused (99% of the time) by a bad connection.

The Data Communications Link (DCL) is a wiring system that allows the sharing of information between the Electronic Engine Control System (EEC-IV) , the Electronic Instrument Cluster (EIC) and external equipment.

The EEC-IV system transmits the following information through the DCL to the EIC:
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The DCL system transmits Malfunction Indicator Lamp (MIL) information to the EIC. The EIC uses MIL information to generate a CHECK ENGINE warning in the event of an engine sensor failure.

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