Pulled my codes, Holy Cow!
Thread Starter
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Senior User
Joined: Oct 2003
Posts: 130
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From: Near Green Bay
Just replaced fuel pump on Saturday night in hopes of curing problem. (I only had 38 psi of fuel pressure, now I have 58)
Right now I just want to know an absolute way to clear out all the codes. That way I will know, if it is still throwing all the same codes or if they are just the same ones that are stuck in there.
How would I check to see if the pump is cutting out? It runs fine during the self test that I did to check pressure.
Let me know,
Mike B
Right now I just want to know an absolute way to clear out all the codes. That way I will know, if it is still throwing all the same codes or if they are just the same ones that are stuck in there.
How would I check to see if the pump is cutting out? It runs fine during the self test that I did to check pressure.
Let me know,
Mike B
Thread Starter
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Senior User
Joined: Oct 2003
Posts: 130
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From: Near Green Bay
I am actually using a piece of 14 gauge wire with the ends flatened. I just call it the paperclip method. I am going out to the garage now to try to clear them.
Talk to you soon,
Mike B
Talk to you soon,
Mike B
Lead Driver
Joined: Nov 2002
Posts: 9,557
Likes: 44
From: Concord, NC
The 4.9 computer monitors the power side (wire going to the pump) of the fuel pump relay to make sure the relay is working. That's what the 95 is for I believe. Since your truck runs, I don't know why this code would come up, maybe just a wiring fault.
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Thread Starter
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Senior User
Joined: Oct 2003
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From: Near Green Bay
Well round two.....
I cleared the codes as per 95BlackF150. It worked. That cleared them all out. I then performed the tests again. This is what I got.
Much fewer this time.
KOEO
23 TPS out of range during self test (
I just changed it out with a new one!!!)
Continuous
None recorded. I just got the 11 to let me know it was in continuous mode and then a 11 again and then nothing.
KOER
12 Cannot control RPM during high RPM test
13 Cannot control RPM during low RPM test
23 Same as above
25 knock sensor not detected during Dynamic Response Test
65 Key circuit low voltage
Could I have a bad brand new TPS? The resistance tests out in parameters, but I can't get a good reading on the voltage coming in. Any suggestions on how to get a good reading?
So that got rid of a bunch of wierd stuff.
Now what?????
Mike B
I cleared the codes as per 95BlackF150. It worked. That cleared them all out. I then performed the tests again. This is what I got.
Much fewer this time.
KOEO
23 TPS out of range during self test (
I just changed it out with a new one!!!)Continuous
None recorded. I just got the 11 to let me know it was in continuous mode and then a 11 again and then nothing.
KOER
12 Cannot control RPM during high RPM test
13 Cannot control RPM during low RPM test
23 Same as above
25 knock sensor not detected during Dynamic Response Test
65 Key circuit low voltage
Could I have a bad brand new TPS? The resistance tests out in parameters, but I can't get a good reading on the voltage coming in. Any suggestions on how to get a good reading?
So that got rid of a bunch of wierd stuff.
Now what?????
Mike B
Last edited by topdeadcenter; Dec 2, 2003 at 07:51 PM.
Lead Driver
Joined: Nov 2002
Posts: 9,557
Likes: 44
From: Concord, NC
If the tps is good, I would check to see if any of the wires are shorting to ground. I'd also check continuity between the tps plug and the tps wire at the computer. Also look for the knock sensor to make sure it is connected and the wiring is good. Check the computer grounds as well, and the fusible links (if there are any) that feed the computer. For the rpm code, I'd try cleaning the IAC and making sure all of those wires are good as well. That code could be due to a bad ground too, if the IAC isn't getting proper voltage from the computer. This should get you started looking at some things anyway. Hope you get this tracked down.
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Senior User
Joined: Oct 2003
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From: Near Green Bay
Auto with overdrive. Don;t know which one. Could it be an AOD? Or is it E40D? How would I find out?
Mike B
By the way, I did check the tranny fluid level. It actually appeared to be a bit overfull.
Mike B
By the way, I did check the tranny fluid level. It actually appeared to be a bit overfull.
Last edited by topdeadcenter; Dec 3, 2003 at 06:49 AM.
Thread Starter
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Senior User
Joined: Oct 2003
Posts: 130
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From: Near Green Bay
The problem just doesn't seem tranny related. It shifts nice and smooth when I can get it going fast enough. I even tried to run without the OD to see if it would make a difference. It didn't.
Mike B
Mike B