05 quest that will not speed up and no codes. Act all bogged down. Can let sit awhile and it will be fine for 3 min then boggs down and will not go over 20 miles per hour. No fuel filter any other ideas?
Country: United StatesMake: Nissan/DatsunModel: QuestYear: 2005Engine: 3.5
no codes in computer
Hello and thank you for using JustAnswer.com
Most of the time it's the MAF sensor based on your description
90% of the time the MAF ( Mass Air Flow ) sensor heated element which meters the air so the computer can add the proper fuel mixture has fallen out of spec. Not enough to cause a Service Engine Soon light but enough to cause the Air and fuel Mixture to be so off it can cause No Start, Stalling, poor acceleration, won't rev over a certain Rpm, and running issues. I would have the Air and Fuel mixture readings checked to verify. Checking the voltage will not show the fault, the air and fuel mixture will. If found to be bad, do not replace with a After Market one. After market MAF sensors never seem to work properly. There heated element doesn't work right which can cause 02 sensors to flat line and have you chasing you tail trying to figure out what is wrong. So the only way to correct this issue if you do have a bad MAF sensor is to replace it with a OEM.
If you have any more questions on this, please feel free to ask. Thanks Jay!
can you unplug the mass and try it? on most models if you unplug them it will run better and then you replace
No, not on these cars
It will idle fine
can you clean them?
but you can't drive with it unplugged
Yes, you can try that, absolutely.
But make sure you use MAF sensor cleaner
If that doesn't work, then you will need to replace the MAF sensor
This what you should use to clean it.
can you think of anything else? if not ok thanks
Na, when there is no codes, and based on your description, this is normally a MAF sensor problem. Also check the air intake boot to the throttle chamber, make sure that isn't cracked or come loose some where also.
If you have any more questions on this, please feel free to ask. Also let me know if your satisfied with my help. Thanks Jay!
Man your not going to believe this.......whe too the 2 o2 sensors out before the back converter and it runs like a bat out of hell... I just ordered the rear converter for it
your right.. I don't believe it...
How many miles on the car?
Catt Converters are covered under warranty for 8 year or 80k miles
Glad you found the problem..
the new one was $467
az direct bolt in
Is there anything else I can do for you?
20 yrs experience with Nissan & Infiniti Trained & Certified.Currently still working for Dealer