Car doesnt accelerate as fast anymore

NISMO IX · 02-17-2018, 06:37 PM

I am pretty sure there are code readers out there that pinpoint exactly what the problem is... For all you know it could just be that the mass airflow sensors just need cleaning. You should maybe find a more competent shop and tech.

I remember seeing BrosFourSpeed on YouTube check a code on the fly and found it was his HFC and was able to clear the code too. Sounds like they want your money.

radix023 · 02-17-2018, 07:12 PM

I hate to recommend this, but take it to a Nissan dealer. Many independent shops do not pay for the subscriptions (or in some cases they are not available) to look up all the diagnostic codes. If you want to spend the money, you can get the code yourself. There are cables and software where you can read them with a laptop and there are bluetooth adapters and software for smartphones/tablets where you can read them. If you do that and post on this site, you may be able to get someone to tell you exactly what it means.

The symptoms you describe could plausibly be caused by a bad O2 or MAF sensor. A cheap thing to try would be cleaning the MAF.

Good luck. That must be frustrating as all get out.

Jhill · 02-17-2018, 10:09 PM

Quote:

Originally Posted by NISMO IX

I am pretty sure there are code readers out there that pinpoint exactly what the problem is... For all you know it could just be that the mass airflow sensors just need cleaning. You should maybe find a more competent shop and tech.

I remember seeing BrosFourSpeed on YouTube check a code on the fly and found it was his HFC and was able to clear the code too. Sounds like they want your money.

Please do not ever say a code reader will pinpoint exactly what is wrong. All a scan tool will do is give you the issue the pcm is seeing and what area the problem is in. This is where knowledge and diagnotstic techniques kick in to do testing and troubleshoot the sensor, wiring, signal etc. This is what separates a true tech from the parts changers. From his story it sounds like he has already been hit by the parts changers and this second shop sounds like they are ready to start throwing more parts.

Op it's time to find yourself a reputable shop that will actually do diagnostics, and don't expect it to be free or you can bet you've just found yourself another parts cannon shop.

NISMO IX · 02-17-2018, 10:50 PM

Quote:

Originally Posted by Jhill

Please don't not ever say a code reader will pinpoint exactly what is wrong. All a scan tool will do is give you the issue the pcm is seeing and what area the problem is in, this is where knowledge and diagnotstic techniques kick in to dontesting and troubleshoot the sensor, wiring, signal etc. this is what separates a true tech from the parts changers. From his story it sounds like he has already been hit by the parts changers and this second shop sounds like they are ready to start throwing more parts.

Op it's time to find yourself a reputable shop that will actually do diagnostics, and don't expect it to be free or you can bet you've just found yourself another parts cannon shop.

"...what area the problem is in," is what I meant. "...don't not..." Is a double negative btw. Thanks for the correction...

Jhill · 02-18-2018, 01:27 AM

Quote:

Originally Posted by NISMO IX

"...what area the problem is in," is what I meant. "...don't not..." Is a double negative btw. Thanks for the correction...

Well apple helps me make all kinds of mistakes and proof reading on a 5c is a bit of a challenge.

Spooler · 02-18-2018, 01:08 PM

Quote:

Originally Posted by Jhill

Please do not ever say a code reader will pinpoint exactly what is wrong. All a scan tool will do is give you the issue the pcm is seeing and what area the problem is in. This is where knowledge and diagnotstic techniques kick in to do testing and troubleshoot the sensor, wiring, signal etc. This is what separates a true tech from the parts changers. From his story it sounds like he has already been hit by the parts changers and this second shop sounds like they are ready to start throwing more parts.

Op it's time to find yourself a reputable shop that will actually do diagnostics, and don't expect it to be free or you can bet you've just found yourself another parts cannon shop.

LOL, We have always called them Easter Eggers. They keep looking for the easter egg.

Khanxyz0z · 04-09-2018, 03:48 PM

So i took it to a shop to do the cleaning, but light came back on after 100 miles. got fed up took it to nissan and they said well diagnose it and all we need to do is reset ecu , i told them idk how you gonna do it just fix it, i feel like a N54 driver now, so they did their thing and light came after 800 miles. went back and they said we can change throttle bodies for 1600, im like im out.
back to the Z forum

Desert Rat · 04-09-2018, 04:20 PM

Quote:

Originally Posted by Khanxyz0z

So i took it to a shop to do the cleaning, but light came back on after 100 miles. got fed up took it to nissan and they said well diagnose it and all we need to do is reset ecu , i told them idk how you gonna do it just fix it, i feel like a N54 driver now, so they did their thing and light came after 800 miles. went back and they said we can change throttle bodies for 1600, im like im out.
back to the Z forum

Don't throw money and parts at it. Get the codes read. Autozone does it for free, as has been mentioned.

Khanxyz0z · 04-09-2018, 05:09 PM

nissan read the codes,
even they said its like 3-4 of them
mass air flow
throttle bodies
some minor ones from engine.

they said if you want all the code areas changed, its gonna be 4-5k. im like that is a set of new pss, nice rims, and other upgrades.
i kind of just want to change whats causing the light to come on, not spend a fortune on things that are not eveb going to get the light off

02-17-2018, 06:37 PM	#1 (permalink)
NISMO IX Track Member Join Date: Sep 2015 Location: Southern Maine Age: 48 Posts: 742 Drives: 2014 370Z MB M6 Rep Power: 586	I am pretty sure there are code readers out there that pinpoint exactly what the problem is... For all you know it could just be that the mass airflow sensors just need cleaning. You should maybe find a more competent shop and tech. I remember seeing BrosFourSpeed on YouTube check a code on the fly and found it was his HFC and was able to clear the code too. Sounds like they want your money. jchammond likes this. __________________ 2017 Ford Focus RS Nitrous Blue "KB43VER" 2014 370z Mag Blk 6M "KOKURYU" (Black Dragon) Last edited by NISMO IX; 02-17-2018 at 06:40 PM.

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02-17-2018, 07:12 PM	#2 (permalink)
radix023 Base Member Join Date: Mar 2017 Location: ATL Posts: 114 Drives: 2016-370z-silver-m6 Rep Power: 10	I hate to recommend this, but take it to a Nissan dealer. Many independent shops do not pay for the subscriptions (or in some cases they are not available) to look up all the diagnostic codes. If you want to spend the money, you can get the code yourself. There are cables and software where you can read them with a laptop and there are bluetooth adapters and software for smartphones/tablets where you can read them. If you do that and post on this site, you may be able to get someone to tell you exactly what it means. The symptoms you describe could plausibly be caused by a bad O2 or MAF sensor. A cheap thing to try would be cleaning the MAF. Good luck. That must be frustrating as all get out.

04-09-2018, 03:48 PM	#7 (permalink)
Khanxyz0z Base Member Join Date: Jul 2015 Location: Brooklyn Posts: 21 Drives: 2013 370z metallic Rep Power: 12	So i took it to a shop to do the cleaning, but light came back on after 100 miles. got fed up took it to nissan and they said well diagnose it and all we need to do is reset ecu , i told them idk how you gonna do it just fix it, i feel like a N54 driver now, so they did their thing and light came after 800 miles. went back and they said we can change throttle bodies for 1600, im like im out. back to the Z forum

04-09-2018, 05:09 PM	#9 (permalink)
Khanxyz0z Base Member Join Date: Jul 2015 Location: Brooklyn Posts: 21 Drives: 2013 370z metallic Rep Power: 12	nissan read the codes, even they said its like 3-4 of them mass air flow throttle bodies some minor ones from engine. they said if you want all the code areas changed, its gonna be 4-5k. im like that is a set of new pss, nice rims, and other upgrades. i kind of just want to change whats causing the light to come on, not spend a fortune on things that are not eveb going to get the light off