ok. so i got my 91 f250 to throw a check engine light at me again after being reset when i disconnected the battery. turns out it does this after idling around in low gears. pulled the codes, got 11, 11, 13, 14, 1. is that last one just letting me know that the check is complete? or is it supposed to be a 141? and what, for sure, are the 13 and 14? i looked em up, at my truck never did the thirteen, so i want some reassurance here. thanks!

 

I hate those blinking lights... I can never seem to read them right so I purchased me a OBD1 scanner. Makes life much easier. You can pic them up for 20-40 bucks on ebay every now and then.


http://cgi.ebay.com/ebaymotors/Digit...1%7C240%3A1318

 

sweet im going to have to go get one of those, about the codes do it a bunch of times and compare your readings because its kinda tricky sometimes

 

i did it three times. i know what im getting. im good at reading em. im just not sure about the separation of that one.

 

there is a OBD1 scanner available at amazon at the moment.

Amazon.com: Equus 3173 Import OBD1 Code Reader: Automotive

 

and i have to have money to buy one of those... lol.

 

On my 1988 F250 I usually see two 11's followed by a long(er) pause then 1 blink, (the separator) another longer pause then the stored codes. Just like the two 11's before the separator, the stored codes repeat twice.

 

I agree with the single seperator blink, the KOEO codes start with a single blink then the code(s) then the code(s) repeated, single blink, then the CM code(s) and then the Code(s) repeated. So you should get four sets of codes with half being repeats of the stored codes.

 

It can't be 141, as you'll only have 2 digit codes. 3 digit codes started in 93 (and some late 92s).

You can use a sweep multimeter to count codes as well, it might be a bit easier to interpret...I hate counting the lights too.

 

get the code reader.

the one posted earlier is what i have.

i HATED trying to read the blinking lights.

 

11 is not an error. Indicates a pass.

13 RPM out of range.
Check curb idle.
Check engine vacuum hoses.
Check that throttle plates can fully close.
Check throttle linkage and or speed control linkage for binding.
Clean IAC passages/clean throttle body.
If OK replace IAC (Idle speed control). Mounted on throttle body.

14 PIP Ignition profile pickup failure
Code 14 indicates two successive erratic profile ignition pickup pulses occurred resulting in a possible engine miss or stall. The PIP sensor is located inside the distributor. Looks like this. To replace it requires the distributor shaft be pressed off.

 

Tell me about it! My truck and 2 and 3 digit codes. I had two codes for TPS while back ago and i got all sort of codes even after doing it 4 times. It seems the more i read it the more codes i got... so i said screw this hopped in my little import and went across town and bummed a friends garage scanner which i later purchased.

 

ok. i realize what the code IS. but my truck never did that. it never studered or stalled. i was just idling around in granny low. and as far as i can tell, my idle is normal, unless letting it lug is whats causing the codes?

 

I think it may be 11, 31, 41, which would be an all clear, EGR related code, and an O2 sensor switching not detected code, respectively.

Here is another website that may help to separate the blinks: EEC IV Self Test hookup

To each his own, but counting has never been much of a problem for me and I can put the $30 on something other than a code reader.

 

when checking the egr check the vac resevior too... looks like a tomato juice can with two vac lines connected to it. I just did this the other day and when I took it off the whole bottom was rusted out. Looked ok from the top though. I've read that alot of the egr codes can be caused by this or by a vac line and not necessarily the egr valve itself. good luck with all that though