Evil Idle
01-27-2006, 08:12 AM
#1
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Evil Idle
I've noticed my gas consumption being ridiculous lately, and started to investigate. Finally, after a few tests I found that I burn a ton of gas while waiting in line to leave my school(car is running). I usually wait 10-15 minutes a day and i've noticed that I lose 2-3 notches of gas on average every day I wait. I have the latest PCM flash and my car just turned 30,000 miles.
Some other symptoms I've found include higher oil consumption and a hesitation when starting.
Any ideas?
Some other symptoms I've found include higher oil consumption and a hesitation when starting.
Any ideas?
01-27-2006, 08:17 AM
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Ugh!
Thats horrible.
Can you describe this idle? Is it... going up and down from like 3k to 1k, and repeat?
Does it fix when she warms up? Does it only happen on cold starts?
What mine does (And is normal to all cars) is it will idle high (2k) until she warms up - steadily decreasing.
Also, describe the hesitation when starting - anything major? All of our rotaries are hesitant to start, they dont single-crank like some piston engines
Thats horrible.
Can you describe this idle? Is it... going up and down from like 3k to 1k, and repeat?
Does it fix when she warms up? Does it only happen on cold starts?
What mine does (And is normal to all cars) is it will idle high (2k) until she warms up - steadily decreasing.
Also, describe the hesitation when starting - anything major? All of our rotaries are hesitant to start, they dont single-crank like some piston engines
01-27-2006, 10:50 AM
#3
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engine running but not going anywhere= high gas usage for short miles. besides that its winter so you have oxygenated fuel. plus you are sitting there while the car is in open loop so it uses even more gas.
quite normal.
quite normal.
01-27-2006, 11:00 AM
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I had an idle problem with mine where it would rise to 1500rpm, then drop to 800 and do this repeatedly every 3 seconds. Turned out it was a bad "neutral switch". It was replaced under warranty and it's been fine ever since. I have 38k miles on mine.
You may also need new plugs; the dealer replaced mine at 37k miles and things have improved. My mileage had dropped to 16.8 before, and after it went to 17.6 and keeps slowly improving as I drive it.
You may also need new plugs; the dealer replaced mine at 37k miles and things have improved. My mileage had dropped to 16.8 before, and after it went to 17.6 and keeps slowly improving as I drive it.
01-29-2006, 10:55 AM
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Rotary engines use a lot more fuel to cold start and warm up than a piston engine. I guess that is why they are more susepcatble to flooding.
Actually, if there was some way to keep heat in the engine when the car was sitting, I bet the fuel consumption would really improve. I notice big differences in fuel economy between my normal 2 mile trips and when I drive greater distances.
Actually, if there was some way to keep heat in the engine when the car was sitting, I bet the fuel consumption would really improve. I notice big differences in fuel economy between my normal 2 mile trips and when I drive greater distances.
01-30-2006, 07:14 PM
#9
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Originally Posted by buyinan8
Finally, after a few tests I found that I burn a ton of gas while waiting in line to leave my school(car is running). I usually wait 10-15 minutes a day and i've noticed that I lose 2-3 notches of gas on average every day I wait.
Any ideas?
Any ideas?
My junior year in high school I was on the wrestling team - straight to practice, not done until 7pm. No traffic jam then.
Senior year I had several A.P. classes so no sports. I'd half drag my younger sister to the car and shove her into it so we could get out of the parking lot before the exits jammed.
College is even easier - plan a study period in the library or buy a Pepsi.
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