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please help with codes

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Old Jan 20, 2014 | 04:51 PM
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please help with codes

So i did the manual code test in my 89 f150 i6 5 speed
on tbe koeo i got a code 32 and 64
On cm codes i got 32 67 and 81
And on koer i got 21 41 32 and 77
If anyone can help with any of these codes or knows a website that has all of them that would really help me out.
 
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Old Jan 20, 2014 | 05:13 PM
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Plenty of excellent info here: Fuel Injection Technical Library » 2 Digit Self-test Codes 11-32


KOEO
Code 32: EVP circuit below minimum voltage of 0.24 volts.
Code 64: ACT sensor is less than the Self-Test minimum of 0.2 volts.

CM
Code 32: EVP circuit has intermittently failed below minimum voltage of 0.24 volts.
Code 67: Neutral safety circuit failure.
Code 81: MAP sensor vacuum was not greater than 2 in-Hg (7 kPa) during normal vehicle operation.

KOER
Code 21: ECT out of self test range 0.3 to 3.7 volts.
Code 32: EVP circuit below minimum voltage of 0.24 volts.
Code 41: No HEGO switching detected always lean (right side).
Code 77: System failed to recognize brief WOT during Dynamic Response Test (user error).

EVP info: Fuel Injection Technical Library » EGR Valve Position sensor (EVP)
ECT info: Fuel Injection Technical Library » Engine Coolant Temperature Sensor (ECT)
ACT info: Fuel Injection Technical Library » Air Charge Temperature (ACT)
MAP info: Fuel Injection Technical Library » Manifold Absolute Pressure Sensor (MAP)

Your Neutral Safety Switch code is probably caused by not holding the clutch in during the tests. This is a requirement for trucks w/4.9L engine and manual trans.

Code 77 is user induced, you did not goose the throttle at the proper time.

What issue(s) are you trying to resolve?

Welcome to FTE!
 
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Old Jan 20, 2014 | 06:06 PM
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Thank you thats exactly what i was looking for.
I was driveing down the road and i noticed it was running hot and i was in the middle of know where, i drove about another 10 miles to a gas station but before i got there it started sputtering and lost all top end power, i had to down shift twice to go up a hill. when i reached the gas station i was coasting and i took it out of gear and it died on me, i towed it home today and pulled codes. Theres white smoke coming from the exaust, alot of it, does this mean i blew a head gasket or worse cracked my head?? And could any of those codes be causeing this or is it definettly a head/gasket?
 
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Old Jan 20, 2014 | 07:08 PM
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Code 41 indicates lean, that could have caused the overheating condition. At this point you need to go back to the basics. You need to do a compression test and possibly a leak down test
 
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Old Jan 21, 2014 | 03:57 PM
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so I did compression test on my 89 f150 i6 and cylinder
#1 was 95 psi
#2 was 90 psi
#3 was 75 psi
#4 was 80 psi
#5 was 75 psi
#6 was 0 psi
does this mean my head/gasket is bad, and why does cylinder 6 have no compression?? Please help
 
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Old Jan 22, 2014 | 01:20 AM
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And all cylinders were the same after leak down test
 
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Old Jan 22, 2014 | 01:36 AM
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did you double-check #6 to make sure that the compression gauge was seating properly ?
 
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Old Jan 22, 2014 | 01:40 AM
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I checked it like 6 times and put pliers on it the last time to make sure was tight.
 
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Old Jan 22, 2014 | 07:51 PM
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I don't want to sound mean, but this is why you pull over and shut it down immediately when you notice its running hot.

that being said, there's a ton of damage that could have been done. you could pull the head and see whats going on. I'm guessing that its a head gasket. if it was me, not knowing if the head is cracked, valves are burnt, ect. i might be tempted to just replace the motor. these motors are pretty available from the yards around here for about the same money or less than the machine work and gaskets.
 
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