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Hi so I'm probably just being dumb but I'm getting weird numbers for a trouble code of one of my older trucks. It's an 88 f250, it throttle response is horrible so I figured I'd jump the test circuit and see what the deal is. And I got
2-2-2-2---1---2-2-2-2. Long pause before and after the one. But I thought it was three numbers max/ so now I'm confused someone help a brother out. Btw I'm a tech, so you don't have to dumb stuff down I'm just being dumb, and this is my least favorite fuel injection. Can't wait to rip all this smog crap outta my way
Are you talking about the Key On Engine Off test? If you are, there are 2 sets of codes given. First set (before single flash) is for KOEO. Second set of codes is for Continuious Memory. You can get two completely different set of codes for each test. Also on your truck the codes are all 2 numbers, not three. If I remember correctly both the KOEO and CM code sequences flash twice.
I thought I replied. Yea that is key on engine off. Key on engine on I got other numbers can't find tho.
1-9-8-2-2-9-8-2-2
I would assume the code would be 982 but that's not a code lol
I thought I replied. Yea that is key on engine off. Key on engine on I got other numbers can't find tho.
1-9-8-2-2-9-8-2-2
I would assume the code would be 982 but that's not a code lol
Here is a good description and also a chart for the codes...
like I said in my last post, the codes in an 88 truck are 2 digit, not three. The 2 codes this sequence shows is 98 and 22. 98 is related to "a hard fault" and the 22 is MAP related. Not sure what a "hard fault present" means, but it don't sound good!
Okay so the map sensor I can figure out. Code 98 is for an e40d.... I have a zf5 lol. So not sure what to do about that. Damn I have had lots of Ford but this forum section is super quite compared to the rest
My truck was originally a E4OD but a previous owner converted to a manual, but let the auto PCM in the truck. I got all kinds of E4OD codes before I installed the correct PCM. BUT, you said you got the "98" only with the KOER test. If you note in the chart, the "98" code during this test is not related to the E4OD trans, only a "hard fault". You only mentioned the "22" codes during the KOEO and CM tests.
If you notice there are 2 different explanations for a "98" code. The definition in running mode (R) is that the computer is looking for no errors (code "11") during the KOEO test. You must address the "22" you are getting during that test before running the KOER test.
So now I put a map sensor in the truck. Got 11 and then still 22 but I guess I can run the running tests now. I'm getting 41 and 77 now. With a 3 in between them. So the goose test, I'm not sure how to make it perform that. System lean could be a million things on this truck, it's a mud truck with no cats, air injection, or o2 sensors lol. And now my oil pressure keeps disappearing at low idle. I just got this truck btw. Never been on the road in my possession.
So now I put a map sensor in the truck. Got 11 and then still 22 but I guess I can run the running tests now. I'm getting 41 and 77 now. With a 3 in between them. So the goose test, I'm not sure how to make it perform that. System lean could be a million things on this truck, it's a mud truck with no cats, air injection, or o2 sensors lol. And now my oil pressure keeps disappearing at low idle. I just got this truck btw. Never been on the road in my possession.
Sounds like your number count is off somewhere. It is very easy to do. Sometime have 2 sets of eyes helps. One watch the flashes and yell them out while another writes. If you are truly getting an "11" in KOEO, then that indicates all the tests pass. If that is the case then "22" is appearing during the CM test.
Are you you saying you tried to run the KOER test and got the other numbers? The first "4" that you got could be the engine cylinder count. Four flashes for an 8 cylinder. There is also a single flash that indicates when to do the "goose" test. There is a video I found helpful on YouTube about running the KOER test with an explanation of how to perform the "goose" test. He's using a Taurus but the information still applies.
I am pretty sure that you need at the very least an O2 sensor for this EFI to work properly. That information is not something I'm qualified to make an opinion on. Without it, you would be running in either "open loop" or "limp mode" I would think. It may be better to pose that question in a different post.
here's a thought, back up and punt, then give all truck info you can, yr, model, motor, trans, you know things that would actually help get your truck symptoms diagnosed, could get a Ford OBD I code reader, if your having that hard of time decoding flashes many of us have this one, life is so much easier with it
here's a thought, back up and punt, then give all truck info you can, yr, model, motor, trans, you know things that would actually help get your truck symptoms diagnosed, could get a Ford OBD I code reader, if your having that hard of time decoding flashes
Its a 1988 F250 with a ZF5. He doesn't mention engine size. Also failed to mention that it is missing all the emission stuff including the O2 sensors until his last post! Pretty sure you need them for the EFI to function correctly.
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