Need help.
Thread Starter
4th Gear
Joined: Apr 2012
Posts: 4
Likes: 0
Need help.
Newbie here, although I've read the site for years, never had a reason to post until now. I have a 95 vert that is idling high and experiencing a pretty significant drop in fuel efficiency (around 22mpg on freeway when it should be getting around 28-29). Took it to my dealer and they swear its idling within specs. I've owned these cars for years and know it shouldn's be turning 2400 @ 70mph.
I had a SES light come on and computer is showing a bad o2 sensor. It is being replaced today but the SA told me that a bad o2 sensor wouldn't be causing a high idle and also wouldn't cause enough of a drop in fuel efficiency to even notice.
Any suggestions/ideas would be most appreciated.
I had a SES light come on and computer is showing a bad o2 sensor. It is being replaced today but the SA told me that a bad o2 sensor wouldn't be causing a high idle and also wouldn't cause enough of a drop in fuel efficiency to even notice.
Any suggestions/ideas would be most appreciated.
Race Director
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
I'm not sure what rpm your motor was turning @ 70mph before, but if it is higher now, your converter may not be locking up during cruise conditions which will greatly affect fuel economy.
Thread Starter
4th Gear
Joined: Apr 2012
Posts: 4
Likes: 0
Thanks 383, it is bone stock and turned around 1900 @ 70mph before. I'll report back my findings after the new o2 sensor.
I guess my main question is could that possibly be the cause for the high idling? Maybe the computer forcing it into close loop?
It's a low mileage car @ 41k.
Any help/suggestions appreciated.
I guess my main question is could that possibly be the cause for the high idling? Maybe the computer forcing it into close loop?
It's a low mileage car @ 41k.
Any help/suggestions appreciated.
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