Just did Fast Intentions HFC Install, Have "Service Engine Soon" Keep popping up
12-01-2015 | 03:26 PM
#16
Depending on ?year? of your car:
Pre-cat seems to be Denso
Post cat looks to be Bosch, NTK/NGK
I am assuming your issue is with post cat?
Working with Honda MAP sensors I know that small value changes make things happen you don't want. Same with O2 to a degree.
1. Reset ECU via start button and throttle sequence.
2. If you can get the new cats very hot and burn off any residue etc. with the OE sensors in.
3. Swap out with OEM sensors for that year. Drive and reply.
Some have suggested a re-flash of ecu and that sounds like an expensive and unnecessary option. I hope someone else with experience can chime in also.
If you find out who makes your OE sensor (and year) I would like to know.
Pre-cat seems to be Denso
Post cat looks to be Bosch, NTK/NGK
I am assuming your issue is with post cat?
Working with Honda MAP sensors I know that small value changes make things happen you don't want. Same with O2 to a degree.
1. Reset ECU via start button and throttle sequence.
2. If you can get the new cats very hot and burn off any residue etc. with the OE sensors in.
3. Swap out with OEM sensors for that year. Drive and reply.
Some have suggested a re-flash of ecu and that sounds like an expensive and unnecessary option. I hope someone else with experience can chime in also.
If you find out who makes your OE sensor (and year) I would like to know.
Is the reset ECU via start button throttle sequence different than resetting ECU via 10 hour battery unplug?
I swapped back in the OEM o2 sensors now and ordered Denso O2 sensors set to be delivered tomorrow.
I will apply the Ecu reset via start button tonight and drive around and see what happens.
Hopefully when i install the Denso O2 sensors tomorrow. I will do another ECU reset and let it go.
The guy from rock auto said this is the first return for the NTK (OEM) sensors for this car. I'm not sure what is going wrong, as the car drove fine for 70 miles, then all of the sudden went into shudder mode and just flashed the service engine soon light. barely drove, but 5 seconds before that happened, car would drive fine. I dont get it.
I will hold onto the NTK sensors and see if the Densos are no good tomorrow, i might swap them back in and do the ECU reset via steering wheel again.
I had a shop install the cats, so im assuming there is no leaks, but i will check later, I will also look at the MAF and see if that is on tight no leaks.
Anything else that would help? I ordered a bluetooth OBD2 code reader from amazon so i can check O2 sensor volts, what should those read on a normally functional car?
Thanks again for the help! you are awesome man
12-01-2015 | 05:35 PM
#17
Registered Member
Joined: Aug 2015
Posts: 960
Likes: 81
From: Indianapolis->Charlotte
Hey
Is the reset ECU via start button throttle sequence different than resetting ECU via 10 hour battery unplug?
>>>It should be the same but it is less of a hassle.
I swapped back in the OEM o2 sensors now and ordered Denso O2 sensors set to be delivered tomorrow.
I will apply the Ecu reset via start button tonight and drive around and see what happens.
Hopefully when i install the Denso O2 sensors tomorrow. I will do another ECU reset and let it go.
The guy from rock auto said this is the first return for the NTK (OEM) sensors for this car. I'm not sure what is going wrong, as the car drove fine for 70 miles, then all of the sudden went into shudder mode and just flashed the service engine soon light. barely drove, but 5 seconds before that happened, car would drive fine. I dont get it.
I will hold onto the NTK sensors and see if the Densos are no good tomorrow, i might swap them back in and do the ECU reset via steering wheel again.
I had a shop install the cats, so im assuming there is no leaks, but i will check later, I will also look at the MAF and see if that is on tight no leaks.
Anything else that would help? I ordered a bluetooth OBD2 code reader from amazon so i can check O2 sensor volts, what should those read on a normally functional car?
>>>I have no idea at this time. Maybe someone here has the voltages. The FSM may have them also.
Thanks again for the help! you are awesome man
Is the reset ECU via start button throttle sequence different than resetting ECU via 10 hour battery unplug?
>>>It should be the same but it is less of a hassle.
I swapped back in the OEM o2 sensors now and ordered Denso O2 sensors set to be delivered tomorrow.
I will apply the Ecu reset via start button tonight and drive around and see what happens.
Hopefully when i install the Denso O2 sensors tomorrow. I will do another ECU reset and let it go.
The guy from rock auto said this is the first return for the NTK (OEM) sensors for this car. I'm not sure what is going wrong, as the car drove fine for 70 miles, then all of the sudden went into shudder mode and just flashed the service engine soon light. barely drove, but 5 seconds before that happened, car would drive fine. I dont get it.
I will hold onto the NTK sensors and see if the Densos are no good tomorrow, i might swap them back in and do the ECU reset via steering wheel again.
I had a shop install the cats, so im assuming there is no leaks, but i will check later, I will also look at the MAF and see if that is on tight no leaks.
Anything else that would help? I ordered a bluetooth OBD2 code reader from amazon so i can check O2 sensor volts, what should those read on a normally functional car?
>>>I have no idea at this time. Maybe someone here has the voltages. The FSM may have them also.
Thanks again for the help! you are awesome man
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NeoNz (12-01-2015)
12-01-2015 | 10:18 PM
#18
Hey
Is the reset ECU via start button throttle sequence different than resetting ECU via 10 hour battery unplug?
I swapped back in the OEM o2 sensors now and ordered Denso O2 sensors set to be delivered tomorrow.
I will apply the Ecu reset via start button tonight and drive around and see what happens.
Hopefully when i install the Denso O2 sensors tomorrow. I will do another ECU reset and let it go.
The guy from rock auto said this is the first return for the NTK (OEM) sensors for this car. I'm not sure what is going wrong, as the car drove fine for 70 miles, then all of the sudden went into shudder mode and just flashed the service engine soon light. barely drove, but 5 seconds before that happened, car would drive fine. I dont get it.
I will hold onto the NTK sensors and see if the Densos are no good tomorrow, i might swap them back in and do the ECU reset via steering wheel again.
I had a shop install the cats, so im assuming there is no leaks, but i will check later, I will also look at the MAF and see if that is on tight no leaks.
Anything else that would help? I ordered a bluetooth OBD2 code reader from amazon so i can check O2 sensor volts, what should those read on a normally functional car?
Thanks again for the help! you are awesome man
Is the reset ECU via start button throttle sequence different than resetting ECU via 10 hour battery unplug?
I swapped back in the OEM o2 sensors now and ordered Denso O2 sensors set to be delivered tomorrow.
I will apply the Ecu reset via start button tonight and drive around and see what happens.
Hopefully when i install the Denso O2 sensors tomorrow. I will do another ECU reset and let it go.
The guy from rock auto said this is the first return for the NTK (OEM) sensors for this car. I'm not sure what is going wrong, as the car drove fine for 70 miles, then all of the sudden went into shudder mode and just flashed the service engine soon light. barely drove, but 5 seconds before that happened, car would drive fine. I dont get it.
I will hold onto the NTK sensors and see if the Densos are no good tomorrow, i might swap them back in and do the ECU reset via steering wheel again.
I had a shop install the cats, so im assuming there is no leaks, but i will check later, I will also look at the MAF and see if that is on tight no leaks.
Anything else that would help? I ordered a bluetooth OBD2 code reader from amazon so i can check O2 sensor volts, what should those read on a normally functional car?
Thanks again for the help! you are awesome man
I did the manual reset, threw in the old OEM o2 sensors but im not sure what is causing the way it runs.
The car ran fine for the first 2 mins when i did the "long reset", once it realized what was wrong, BAM back to square one, same way it drove yesterday with the NTK o2 Sensors. Not really sure what to do at this point
I did another reset and i'll let it sit again. will start it back up. I can tape the idle for you guys if that helps or mimic the noises that happens. I have to really press my footdown on the gas, like its bogging and doesn't want to go anywhere after 2 mins of the reset.
No engine codes, yet, but im sure those are bound to come.
Checked the exhaust bolts for leaks, nothing i could find. re-tightened the intake as well.
please help
12-02-2015 | 11:14 AM
#19
Registered Member
Joined: Aug 2015
Posts: 960
Likes: 81
From: Indianapolis->Charlotte
Leaking exhaust should not cause any of this. If it leaks you will see it in the cold and hear it if it is too bad.
You may try one of the 350 or 370 sites as they have more knowledge of these cars. O2 sensor voltages, Did you get the FSM from here?
I am new here and to the car. It sounds like it is running rich or lean for some reason. I tried to read back through all your posts and get the full story like which o2 sensors made it run or not. If in doubt and nothing else works go back to stock. It sucks but it may be the cats. I hope someone else will chime in on the FI cat/o2 code problem.
You may try one of the 350 or 370 sites as they have more knowledge of these cars. O2 sensor voltages, Did you get the FSM from here?
I am new here and to the car. It sounds like it is running rich or lean for some reason. I tried to read back through all your posts and get the full story like which o2 sensors made it run or not. If in doubt and nothing else works go back to stock. It sucks but it may be the cats. I hope someone else will chime in on the FI cat/o2 code problem.
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NeoNz (12-02-2015)
12-02-2015 | 03:00 PM
#20
Leaking exhaust should not cause any of this. If it leaks you will see it in the cold and hear it if it is too bad.
You may try one of the 350 or 370 sites as they have more knowledge of these cars. O2 sensor voltages, Did you get the FSM from here?
I am new here and to the car. It sounds like it is running rich or lean for some reason. I tried to read back through all your posts and get the full story like which o2 sensors made it run or not. If in doubt and nothing else works go back to stock. It sucks but it may be the cats. I hope someone else will chime in on the FI cat/o2 code problem.
You may try one of the 350 or 370 sites as they have more knowledge of these cars. O2 sensor voltages, Did you get the FSM from here?
I am new here and to the car. It sounds like it is running rich or lean for some reason. I tried to read back through all your posts and get the full story like which o2 sensors made it run or not. If in doubt and nothing else works go back to stock. It sucks but it may be the cats. I hope someone else will chime in on the FI cat/o2 code problem.
I will do my best to start a post on there. Called FI and they believe it is a vacuum leak somewhere. I will start looking around.
Regards,
Brett
12-11-2015 | 04:16 PM
#23
I'm wondering the same thing I had a failed header install and the didn't want to drive home CEL light blinking every now and then and misfiring big time . I flashed the car from my one map to stock and did the same thing, did the ecu reset same thing I can't eve start the car goes right into a misfire . Cars been at the dealer for two days and I've heard nothing :/
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NeoNz (12-18-2015)
12-18-2015 | 04:20 PM
#24
I'm wondering the same thing I had a failed header install and the didn't want to drive home CEL light blinking every now and then and misfiring big time . I flashed the car from my one map to stock and did the same thing, did the ecu reset same thing I can't eve start the car goes right into a misfire . Cars been at the dealer for two days and I've heard nothing :/
The following users liked this post:
NeoNz (12-19-2015)
12-19-2015 | 12:58 PM
#26
12-29-2015 | 11:55 AM
#28
The dealer tossed in an ECU. Been dealing with a P2A00 code , new sensor and just fixed some exhaust leaks yesterday. We'll see