well my code 67 must be from something else unrelated to the clutch switch. l do not have a clue where to go from here. had 1.6 volts at the terminal u sent the diagram to. i wish i could close the chapter on this so ii could read the codes for koer. book says i have to get a code 11 before i can proceed. is this a fact? oc continous memory codes i get a code 11. did get the air conditioner fixed today so all has not been in vain.

 

you can run a KOER test even if you don't have a code 11 in the KOEO test, Its the Cylinder Balance test that you can't perform without Code 11 first. I'd order a new switch for your clutch and I remember the manual saying one switch on the transmission, (I will Check This)the only other options after that are to check your A/C Clutch circiut as in that manual. Without a Breakout Box it gets tricky but more fun to dive into. Tell me what transmission you have and I'll see if it has another switch.

1.Use a continuity tester on the switch with pedal up it should show open No continuity, with the pedal to the floor it should show closed and the continuity tester will beep constantly

 

Jim - I can't see the entire FA pages you posted, only the top third or so. Am I the only one who sees them that way?

 

Ok Dort, I have a 4 in the floor. You know I have not tried to test the code since I put Freon in the truck. The clutch on the compressor would not turn on till I charged it up. All tested fine and no leaks were found think goodness. I did put a new dryer on it and pumped it down and it held the vacuum just fine. Well I am going to go out there and freeze to death and see if I get my famous Code 67 once again. The only switch I saw on the transmission was the one to the backup lights. Hope I answered your questions. Richard

 

Ct .If your referring to post #50 I can see the whole thing when I click on the link. The whole pages are not shown in full because if I photographed the whole page nobody could read it. I took photos only of anything relating to the flow charts regarding code 67.Steps FA4, FA10, FA11, are the only 3 steps to resolve that error code.Each step has 2 choices leaving the mechanic with 6 options to resolve it.

 

Ok Richard I went looking hard and reading through like a champ, There is no switch on the trans except for the backup switch. Which means it's pointing towards a fault in the A/C circuit. If you can verify the (The Clutch Pedal One)clutch switch operation on the switch itself it eliminates the switch. I would check for a bad chassis ground in the A/C Clutch circuit.If the voltage was 1.6 Volts then the flow chart says there is a short to power in the A/C Clutch circuit. I'm referring to step FA 4 1.0 Volt or greater.A/C INPUT CHECK.By the way my name is Jim LOL, like my son used to say when he was smal,l I'm not a Dort I'm an Alex.XD

 

Jim - this is the post I'm talking about - I can see only the top ~half of the pages.

 

lLike this?

 

 

 

This works, can see both halves this way. The stuff in your Album, I see only partial pages.

 

Ok we start out at FA 10. then go to FA4 or FA11. at FA11 you can go to FA4 or rerun quick test replace open switches.At FA4 Service the short in A/C or replace processor

 

I wonder why?

 

Your photos are clean and are perfect. Tomorrow I will start looking for a short to the A/C I may have a processor issue or dirty contacts at the processor. Nice to get to know you Jim, bet you all are still in the deep freeze weather wise. Tidbit off topic, If it is the processor then it's back to the wrecking yard to hunt one down. I know I saw one on a 1986 wonder if that year model will work on my 1985 F250. It has the same 302 with EFI. Guess the processor is under one of the kick panels. Jim thanks for all you input and troubleshooting. These Haynes manuals are worthless when you get this involved.

 

its cold up here too. an 86 processor should work instead of an 85 processor. I would check the 60 pin connector, grounds, connectors, and switches before i replace the processor. There is one more test EEC IV has built into them, it's called the (Wiggle Test) or continous code test it's activated my De-Activating the KOEO test and turning the key to the on position. I'll post it tomorrow, but it can be activated while the engine is off or on, What it does is it lets you wiggle all the connectors and harness from sensors to Processor while it constantly monitors and records any short it sees, however its a little more in depth so some photos might be in order. Since the test is a last resort. There's also a Quick test timing check that can be used as well as the cylinder balance test and an output state check.
1.To perform an OUTPUT STATE CHECK you wait until the KOEO test is complete then you can actuate all relays and solenoids on or off by briefly opening the throttle to its wide open position after all codes are given. Useful for checking vacuum solenoids and thermactors and various EEC IV relays.
The processor is located under the dashboard near your gas pedal and it slides out, the Cruise Amplifier is attached to it as well.I 'll work on this somemore tomorow, and a different processor might be used for trucks with a manual transmission.(Need To Confirm). For these tests we don't use a code reader, we use a Volt Ohm Meter and look for voltage spikes of 10.5 Volts to find the shorts

Haynes is ok for novice to intermediate knowledge people(no offence intended to anyone who reads this), but when an issue occures like this you need the real deal.