Poor Fuel Economy
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Poor Fuel Economy
I have a 2001 For Explorer 4x4 XLS.
I am getting 430KM off of 70 liters, so that is 270 miles off of 18 gallons. I used to get closer to 375 miles of of 18 gallons.
I have had the air filters cleaned, new O2 sensor, I run medium octane gas, synthetic oil and have not changed my driving patterns.
This is getting rediculous! Sometimes I feel like I have lots of power, other times it is very sluggish. I run injector cleaner every 4 fill ups.
Can anyone recommend something for me to look at or to get my mechanic to look at?
Thanks
Matt
I am getting 430KM off of 70 liters, so that is 270 miles off of 18 gallons. I used to get closer to 375 miles of of 18 gallons.
I have had the air filters cleaned, new O2 sensor, I run medium octane gas, synthetic oil and have not changed my driving patterns.
This is getting rediculous! Sometimes I feel like I have lots of power, other times it is very sluggish. I run injector cleaner every 4 fill ups.
Can anyone recommend something for me to look at or to get my mechanic to look at?
Thanks
Matt
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Joined: Nov 2004
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From: Salt Lake City, Utah
I agree, the plugs are wires have probably not been replaced in a while. Use only Motorcraft or Autolite plugs and wires.
You say you have had the air filters cleaner? Are you a cotton gauze type air filter? If that is the case, I would strongly consider that you may have a contaminated MAF sensor. Consider switching to a better air filter, such as Volant Powercore or AFE ProDry. They may not flow quite as well as a K&N, but they still flow more air than the engine can use.
You say you have had the air filters cleaner? Are you a cotton gauze type air filter? If that is the case, I would strongly consider that you may have a contaminated MAF sensor. Consider switching to a better air filter, such as Volant Powercore or AFE ProDry. They may not flow quite as well as a K&N, but they still flow more air than the engine can use.
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I am about 10000 miles away from my next service. Bare with me as I am converting from KM to miles but I had the 100,000KM service done at 120K and will do it again at 220K. that is plugs, transmission kit, coolant.
I will look into a better air filter, I am just using one provided by my mechanic, I beleive it is cotton based.
I also recently had my transmission rebuilt 100%. I lost 1st and 3rd, it is still under warranty but I am not sure if the transmission can affect the fuel economy.
I have 205,000 KM or 130k Miles on it.
Thanks for you input and please keep the suggestions coming....
Matt
I will look into a better air filter, I am just using one provided by my mechanic, I beleive it is cotton based.
I also recently had my transmission rebuilt 100%. I lost 1st and 3rd, it is still under warranty but I am not sure if the transmission can affect the fuel economy.
I have 205,000 KM or 130k Miles on it.
Thanks for you input and please keep the suggestions coming....
Matt
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OK, now the truck is ideling high. When I first start it, it is around 750. I drive around and it will stay at 1500 rpm, even at a dead stop and put into park or neutral.
My mechanic thinks there may be a vacume leak. Has anyone had a similar experience?
Thanks
Matt
My mechanic thinks there may be a vacume leak. Has anyone had a similar experience?
Thanks
Matt
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Joined: Oct 2005
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Also could be a bad thermostat. Same symptoms happened to me a couple of months ago. temp gauge only showed a small increase in temp, but this put the expy into limp home mode and 1500 rpm idle after a short warm up..
Scucci
Scucci
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thanks for the tip, I hope to hear from my mechanic today. He also said it may be a bad ground, I have not had any cables changed over the last 6 years so they are probably due......
Matt
Matt
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OK, I got a call from my mechainc, the engine is running hot at about 105-110. They are going to change the thermostat and perform the cooling system maintenance that I was due to get done in a few months.
I wonder if this would explain why my transmission went at the end of August all of a sudden??
Matt
I wonder if this would explain why my transmission went at the end of August all of a sudden??
Matt
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