Ecm Codes?
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Ecm Codes?
Where Can I Get A List Of Computer Codes? I Have A 1987 F-150 W/4.9, It Started Running Like Crap Just Out Of The Blue. I Pulled The Codes And For The Key On /engin Off I Got 67 & 33. For The Running Test I Got 352. Help Me Please!!!!
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I think you can get the codes at fordfuelinjection.com. Do you have EEC - IV or something earlier?? Are you sure that you got a (3) digit code on an '87?? I think (3) digit codes came on OBD II systems on later models?? If you "Google" by whatever EEC system you have you should find numerous sites with the codes explained, i.e. EEC IV Codes.
guzzler96
guzzler96
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Some newer EEC-IV's (around 92 or so) have three digit codes, and has nothing to do with OBD-II. An '87 is EEC-IV, and uses two digit codes. OBD-II has a letter and then four digits for the codes.
IHUNT, be sure you are holding the clutch pedal to the floor during the test, as this is likely the cause of the code 67. Code 33 means the computer can't detect opening of the egr valve, meaning either the position sensor is bad, the valve is stuck closed, there could be a vacuum leak, could be a bad evr, etc. If you don't have a repair manual of some sort, I recommend getting one - it will be a valuable resource for tracking down the problem and troubleshooting the egr system.
IHUNT, be sure you are holding the clutch pedal to the floor during the test, as this is likely the cause of the code 67. Code 33 means the computer can't detect opening of the egr valve, meaning either the position sensor is bad, the valve is stuck closed, there could be a vacuum leak, could be a bad evr, etc. If you don't have a repair manual of some sort, I recommend getting one - it will be a valuable resource for tracking down the problem and troubleshooting the egr system.
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I've Checked My Codes Again Had A Bad Egr Poition Sen. Replaced Code Cleared.one Down. I Have No Koeo Codes Or Contious Codes And Only Run Code That Is Bad Is The Power Steering Pressure Switch. However The Truck Still Runs Like Crap! It Almost Sounds Like Its Running On 4 Cylinders. Any Ideas What To Check Next????
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Did you turn the wheel left and right during the KOER test? The computer expects you to do this right after the 4 flash cylinder ID sequence. This will trip the PSPS switch and provide the input the computer expects.
The computer has only limited visibility into the functioning of the TFI module and pickup coil. These can cause poor running without setting codes. Check your grounds as well.
Another thing you can do is check your fuel pressure and adequacy of delivery volume. Here again, the computer "trusts" the fuel system to deliver +/- 10% of what it is asking for. It can compensate for modest errors through the oxygen sensor feedback, but big errors cause over or underfueling.
Pull the vacuum hose off the fuel pressure regulator and verify there is no fuel there.
Does it "run like crap" at idle, or only under load? KOER should set some sort of code, at least codes 12 and 13, if the problem badly impacts idle quality.
The computer has only limited visibility into the functioning of the TFI module and pickup coil. These can cause poor running without setting codes. Check your grounds as well.
Another thing you can do is check your fuel pressure and adequacy of delivery volume. Here again, the computer "trusts" the fuel system to deliver +/- 10% of what it is asking for. It can compensate for modest errors through the oxygen sensor feedback, but big errors cause over or underfueling.
Pull the vacuum hose off the fuel pressure regulator and verify there is no fuel there.
Does it "run like crap" at idle, or only under load? KOER should set some sort of code, at least codes 12 and 13, if the problem badly impacts idle quality.
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