Wont start. Put in a new rebuilt eec-iv in my 1987 f150 4.9 EFI. When i add a little starting fluid or raw fuel it will only run for 5 to 10 secs each try. I get sweeps on my volt meter ( memery codes ) 11 1 11 11 11 11 1111 then i think it repeats then stops. Does this mean 11 all ok because the truck didn't run?
Thanks
Mike

 

It means it hasn't had time to store any codes in the memory. There has to be some other problem other than the computer if it still won't start. It is promising that you are getting codes out of it this time though. Make sure timing is correct, and that you are getting correct fuel pressure at the fuel rail.

 

11 and 111 are codes for System Pass I believe. I get an 11 code on mine when I do a KOEO test and then my reader goes into the continuous memory codes, which I believe are codes generated while driving that the computer records. When I do a KOER test, the engine runs thru a sequence of controlling all the different components of the engine,e.g. idle,etc., my reader prompts me to depress the throttle to the floor at one point, depress and release the brake pedal at one point and turn the steering all the way to the right and back to center at one point and then starts to read the engine running codes. I guess what I am getting at is, if the engine will not run long enough to generate any codes you won't see any.

 

Thanks, I think its a problem with fuel, I have fuel to the rail though. I disconnect the fuel line in front of the fuel filter and it pumps with both tanks. How do you read this set of sweps? Does it says code 11? Do you count the one sweep and the four sweep? Why does it repeat 11 four times?
11 1 11 11 11 11 1111
mike

 

this'll explain it:

http://fordfuelinjection.com/index.php?p=13

 

I know on my reader it generates a separator code between the actual codes it is reading. I am wondering if you could be seeing an 11 code three times with a separator code of one blink(sweep) between the 11 codes, which would give you (8) blinks(sweeps). Does more time elapse between the first (2) blinks or sweeps and the third sweep or between the fifth and sixth sweeps and the last. I guess you are reading these with an analog multimeter?? Do you have a working check engine light?? I know when I read mine the Malfunction Indicator Light(MIL) or CEL (Check Engine Light) blinks the codes that the reader is reading. I don't know if this would happen if you are reading with an analog multitester too??

guzzler96

 

The output would be 11, 11, 1, 11, 11 for an all clear code. It outputs the continuous codes twice, then a one sweep separator pulse, then the memory codes twice.

 

thanks i'll try again.

 

I did the codes for the fun of it. It only ran total about 20 sconds on starter fluid. Codes i got were (sweeps from my volt meter)
11 then 1 sec pause
1 then 2 sec pause
11 then 1 sec pause
11 then 2 sec pause
11 then 1 sec pause
1111 then 4 sec pause
11 then 1 sec pause
1 then 2 sec pause
11 then 1 sec pause
11 then 2 sec pause
11 then 1 sec pause
1111 then 6 sec pause
1 then 2 sec pause
11 then 1 sec pause
1 then 2 sec pause
11 then 2 sec pause
11 stop for good. I removed the key then waiting 20 sec then re tried for trouble codes. Did 10 times always the same. I had the clutch in, everything off, park brake on and in nutrel. To me it looks like 21, 222 or 212,22 then 12, 122 or 121 and 22. I read codes i went to fordfuelinjection.com and the Haynes and it's not easy. This can't be just 11, 111 can it?

 

It takes some real practice to read the codes accurately.

Looks like codes 21, 22, and 24 for KOEO test. The sequence is dumped out twice. Normal behavior for KOEO codes.

Then the lone separator pulse.

Then codes 21 and 22 in continuous memory

Getting codes 21 and 24 in KOEO makes sense. The test is intended to be run with the engine warmed up. If the engine is cold (which it is, because it won't start) it would be considered normal to get code 21 (ECT out of self-test range) and code 24 (IAT out of self test range).

Code 22 (MAP/BARO out of self test range) is a potential problem. The MAP sensor should be indicating 100 percent load factor, since there is no manifold vacuum with the engine not running.

Now on to the continuous memory codes.

Code 22 has the same meaning as a continuous memory code as it does as a KOEO code. If your MAP sensor is dead (not oscillating), then it would be reasonable to see a code 22 and the PCM mixture control would have to revert to a guess based on TPS. MAP problems may be the source of your fouled spark plugs and failure to start.

Code 21 is not listed as a continuous memory code, so that one I can't explain.

Your reportage would make more sense if it went something like

11 then 1 sec pause
1 then 2 sec pause
11 then 1 sec pause
11 then 2 sec pause
11 then 1 sec pause
1111 then 4 sec pause
11 then 1 sec pause
1 then 2 sec pause
11 then 1 sec pause
11 then 2 sec pause
11 then 1 sec pause
1111 then 6 sec pause
1 then 6 second pause
11 then 1 second pause
11 then 2 second pause
11 then 1 second pause
11 stop for good.

This would be code 21, 22, 24 in KOEO and code 22 in continuous memory. Both KOEO and continuous memory codes are normally repeated. I'd ignore the code 21 and 24, and focus in on the code 22 as a MAP problem.

One piece of good news is that the PCM is no longer brain dead and is capable of dumping out codes. Furthermore, most of the codes make sense.

 

Thanks! I'll check again, I think that's what it was cm 22 then 22. If the CM codes were 21,22. I saw code 21 in KOEO, it was (key on engine off).
Will also check the map voltage tomarrow for voltage.
Mike

 

I checked in FTE advance search for someone that has the same truck as mine. MAP pluged in I get 0 volts at SIG RTN and 5 volts at MAP PB SIGNAL, and 4.2 volts at VREF. MAP unpluged I get 0 volts at SGN RTN, 4.2 volts at MAP BP SIGNAL and 4.5 at the VREF. Map unpluged I get 4.8 volts from the SIG RTN to VREF. I get 4.8 volts from the SIG RTN to MAP BP SIGNAL. The other truck that I matched my votage to had 2.5 volts at the SIG RTN plugged and unpluged??? He said after testing the MAP he replaed another part and truck runs now. ODD???? I believe you guys said that I needed also to test with a scope or a volt meter with a frequence?? to test it. Also test the Map plugged in, test with a vacuum gauge. Do I need to do this? Add 20 inches of HG with the volt meter on the MP PB SIGNAL and see if it drop to 1 volt?

 

Test for a short (continuity) between VREF and the MAP signal wire to see if the reference voltage is going over there. 2.5V should be the correct reading for the signal wire with the MAP sensor plugged in. Unless of course you have an older style voltage varying MAP sensor, which I'm not familiar with. You said you had the same voltage on the MAP signal wire as you had on the VREF wire when the sensor was unplugged though, which is why I'm thinking there's a short.

 

Thanks I'll check again? I found an old post you guys had about testing the Map at https://www.ford-trucks.com/forums/s...34#post2115634

 

Double checked and thats what I get. CM 22, 22 not 21, 22