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Poor Fuel Economy On Camry 010 - Car Talk - Nairaland

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Poor Fuel Economy / Oil Shortage On Camry Pencil Light / Parts Of A Car That Has The Biggest Impact On Fuel Economy (2) (3) (4)

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Poor Fuel Economy On Camry 010 by adesanyadotun: 12:46pm On Aug 20, 2020
I observed that my Camry 2010 has poor fuel economy. When scanned it was observed that fuel efficiency is fine while in motion but very poor at stationery.
The exhaust line has been checked and panel says no leak.
The exhaust tail is clear, no black.
What could be the course of the poor fuel economy.
Re: Poor Fuel Economy On Camry 010 by legionISproteus: 2:34pm On Aug 20, 2020
A heavy right foot

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Re: Poor Fuel Economy On Camry 010 by mejai(m): 2:39pm On Aug 20, 2020
legionISproteus:
A heavy right foot
Abi he may be aggressive in revving grin

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Re: Poor Fuel Economy On Camry 010 by EngRichie: 6:53pm On Aug 20, 2020
Maybe the smart fuel Guage is confusing you.

Guage drops faster while the car is stationary because of very low miles per gallon. When the car is set in motion, you will notice that the Guage will rise or drop more slowly.

Your concern might be real though.
Re: Poor Fuel Economy On Camry 010 by adesanyadotun: 7:01pm On Aug 20, 2020
EngRichie:
Maybe the smart fuel Guage is confusing you.

Guage drops faster while the car is stationary because of very low miles per gallon. When the car is set in motion, you will notice that the Guage will rise or drop more slowly.

Your concern might be real though.
I don't think so. Scan confirmed that the car takes more fuel at idle. It was scanned at idle and in motion .
Re: Poor Fuel Economy On Camry 010 by adesanyadotun: 7:14pm On Aug 20, 2020
legionISproteus:
A heavy right foot
Heavy right foot at idle?
Re: Poor Fuel Economy On Camry 010 by AutoMoTech(m): 7:32pm On Aug 20, 2020
adesanyadotun:

I don't think so. Scan confirmed that the car takes more fuel at idle. It was scanned at idle and in motion .
Can you provide scan data to buttress this?

Higher fuel consumption at idle compared to when the vehicle is in motion is usually a factor of the presence of a vacuum leak.
Because at idle the unmetered air makes the ECU/PCM spray more fuel to compensate for extra air. However when in motion the extra air getting in is negligible since the amount of air intake is more and might be closer to atmospheric pressure.
Reverse is the case if the MAF was dirty.
So OP kindly check for vacuum leaks among other things...

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Re: Poor Fuel Economy On Camry 010 by Itulah(m): 7:46pm On Aug 20, 2020
AutoMoTech:

Can you provide scan data to buttress this?

Higher fuel consumption at idle compared to when the vehicle is in motion is usually a factor of the presence of a vacuum leak.
Because at idle the unmetered air makes the ECU/PCM spray more fuel to compensate for extra air. However when in motion the extra air getting in is negligible since the amount of air intake is more and might be closer to atmospheric pressure.
Reverse is the case if the MAF was dirty.
So OP kindly check for vacuum leaks among other things...


A Vacuum leak will throw a P0442/P0456 code and trigger the Check Engine Light.
Re: Poor Fuel Economy On Camry 010 by AutoMoTech(m): 7:57pm On Aug 20, 2020
Itulah:



A Vacuum leak will throw a P0442/P0456 code and trigger the Check Engine Light.
Sorry not always.
Not all vacuum leaks throw codes. Some will cause an ignition misfire, some will cause a rough idle etc. If you follow error codes, you will keep fixing stuffs that aren't broken. Don't be deceived. Not all vacuum leaks throw codes.
For the codes you dropped;
P0442 Evaporative Emission Control System Leak Detected (small leak) - this is a leak in the emissions system. The only way this will cause higher fuel consumption is if the purge valve is stuck open thereby allowing fuel vapour directly into the engine. This will result in negative fuel trim figures.
Re: Poor Fuel Economy On Camry 010 by ZIMDRILL(m): 9:00pm On Aug 20, 2020
adesanyadotun:
I observed that my Camry 2010 has poor fuel economy. When scanned it was observed that fuel efficiency is fine while in motion but very poor at stationery.
The exhaust line has been checked and panel says no leak.
The exhaust tail is clear, no black.
What could be the course of the poor fuel economy.

please show us the results from you scan


especially the poor fuel economy at idle aka stationery
Re: Poor Fuel Economy On Camry 010 by EngRichie: 4:31am On Aug 21, 2020
Let's see the scan result that shows higher fuel consumption at idle for further analysis. You might just mention the error code.

adesanyadotun:

I don't think so. Scan confirmed that the car takes more fuel at idle. It was scanned at idle and in motion .
Re: Poor Fuel Economy On Camry 010 by adesanyadotun: 10:05am On Aug 21, 2020
OK, I will try whether I can retrieve the scan result.
No check engine light though, my auto tech suspected vacuum leak.
Scan did not bring up any trouble code.
The fault was detected checking the life data of the car.

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