Word...
Car bogging while driving
- Thread starter SHOstuff
- Start date
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Word...
SHOstuff
SHO Member
Ok guys. I got the codes and here they are:
KOEO:
14
51
91
95
I know 11 is system check ok but 14 is system pickup is erractic...what is that?
But then 91 and 51 I don't understand. Does 91 mean that one of the O2 sensors are bad, if so which one? But it shows that I have a bad fuel pump though.
NOw for the KOER test codes:
21
26
73
25
But could someone explain 26 and 25?
KOEO:
14
51
91
95
I know 11 is system check ok but 14 is system pickup is erractic...what is that?
But then 91 and 51 I don't understand. Does 91 mean that one of the O2 sensors are bad, if so which one? But it shows that I have a bad fuel pump though.
NOw for the KOER test codes:
21
26
73
25
But could someone explain 26 and 25?
Last edited:
14 says that the pip signal is inconsistent. that is the crank sensor, and that code tells you that you need to change the crank sensor soon, or you will be stranded on the side of the road. I can tell you from experience that that failure tends to happen at night, in the rain, when you are on your way to something very important.
51 says that the engine coolant temp sensor is grounded (the sensor the pcm uses, the one w/ 2-wire connector), which means that the pcm thinks the engine is cold all the time, which is bad for mileage, emissions, and your engine.
91 says that the front bank o2 sensor reads lean all the time, this is usually a bad o2 sensor but could be due to a vacuum leak on that bank as well.
95 says that the fuel pump secondary fuel pump circuit faulted, which is usually a junk code that gets set when the engine is stalled for any reason.
21 says that the engine coolant temp was out of range during the koer test, which just confirms the earlier code is still valid.
26 says that the mafs is out of range, which could be a bad mafs or bad wiring.
73 says that the throttle position was not changed enough - there is a point during the koer test where you need to goose the throttle & you did not step on it hard enough or at the right time.
25 says that the knock sensor was not detected during the koer test, likely the knock sensor is bad or the wiring is bad to it.
I would assume the last 2 are operator error at this point, and ignore them. I would concentrate on fixing the crank sensor, the temp sensor and the mafs, after which I would reset codes and drive it a while before pulling codes again to see what is still there or has popped up new.
51 says that the engine coolant temp sensor is grounded (the sensor the pcm uses, the one w/ 2-wire connector), which means that the pcm thinks the engine is cold all the time, which is bad for mileage, emissions, and your engine.
91 says that the front bank o2 sensor reads lean all the time, this is usually a bad o2 sensor but could be due to a vacuum leak on that bank as well.
95 says that the fuel pump secondary fuel pump circuit faulted, which is usually a junk code that gets set when the engine is stalled for any reason.
21 says that the engine coolant temp was out of range during the koer test, which just confirms the earlier code is still valid.
26 says that the mafs is out of range, which could be a bad mafs or bad wiring.
73 says that the throttle position was not changed enough - there is a point during the koer test where you need to goose the throttle & you did not step on it hard enough or at the right time.
25 says that the knock sensor was not detected during the koer test, likely the knock sensor is bad or the wiring is bad to it.
I would assume the last 2 are operator error at this point, and ignore them. I would concentrate on fixing the crank sensor, the temp sensor and the mafs, after which I would reset codes and drive it a while before pulling codes again to see what is still there or has popped up new.
SHOstuff
SHO Member
So you're telling me the fuel pump isn't bad at all?
SHOstuff
SHO Member
so the maf is what's causing my slow acceleration? if they say to clean the maf sensor because they had those symptoms and i did that with no results then it only leaves me to believe that it may be a bad maf. right?
SHOstuff
SHO Member
Would a bad MAF result in bad performance? What are the symptoms?
SHOstuff
SHO Member
Ok cool. I'll try that and post back afterwards.
SHOstuff
SHO Member
Ok guys. I un plugged it and it drove the same so I'll be replacing that sensor today. Thanks for y'all help!
SHOstuff
SHO Member
Just changed the MAF and I'm still having that problem. Any ideas? This is highly frustrating, especially when I just spent $86 on a part that I thought was the problem THAT showed up in the code list.
SHOstuff
SHO Member
Idk if it eliminted the code just yet but all I know is its still running the same.
SHOstuff
SHO Member
I just had the car checked by a mechanic and he did a fuel pressure check and it came out fine. Now I'm really wondering whats going on. Please, does anybody have any other ideas of what it might be?
SHOstuff
SHO Member
The mechanic cleared the codes and the only thing he picked up was the o2 sensors. After driving it home, I checked them again and got codes: 79, 19 and it blinked once before it was finished.
19 says the cid circuit failed. this is the cam sensor and if it is sick or the connections are intermittent, then it will cause the engine to run like crap. you need to get this sorted out.
79 says that you left the a/c on during the koer test, which is of no particular importance.
79 says that you left the a/c on during the koer test, which is of no particular importance.
SHOstuff
SHO Member
So is this causing the lack of power?
kevinspann
Don't take my advice.
Seems that way.
SHOstuff
SHO Member
So why didn't that show up in the first test when it still was having the same symptoms?
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