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Discussion Starter #1
Any help would be appreciated.

The check engine light, comes on and stays on.
The car is running great. Has oil and water.
I don't notice any problems whatsoever.


I dont understand why this light is on.

Should I be looking at the mass air sensor for this problem?
 

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You need to go get the code read. A local automotive parts place can do it for you if you don't have a scanner.
 

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Make sure you hear exactly three clicks when you tighten your gas cap after putting gas In the tank.
Not to thread jack or anything, but I've been an idiot and forgotten to put my gas cap back on some of my other cars and I've never thrown a code for it. How finicky is that really?

OP, get the code read. Simple. It'll tell you what's up.
 

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Such Administrating
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Not to thread jack or anything, but I've been an idiot and forgotten to put my gas cap back on some of my other cars and I've never thrown a code for it. How finicky is that really?

OP, get the code read. Simple. It'll tell you what's up.
Sometimes it will take cars a couple of cycles for the CEL to come on. It may not have run an evap leak test every time you started the car.

Sounds like the crankshaft.
rotfl

I am gonna go with the cylinder 3 rod! :eek:

But seriously, if nothing else, get the code pulled at autozone and post the results here.
 

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Discussion Starter #8
Thanks guys. Im taking her in tomorrow for a code read.

It's NOT the crankshaft!
 

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Instead of buying a scanner, you can buy a cable that plugs into a USB port on your laptop. I got mine on Ebay for $18.00. No need to buy any software for basic code reads. A bunch of free software is avalable.

Good luck.
 

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Discussion Starter #10 (Edited)
I'm happy to report, on a like new 2005 Lotus Elise ( the best year) with 29,800 miles on her.............

GAS CAP!

Problem solved on this, extremely, exceptionally, well maintained, pristine beauty.
 

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2005 elise touring ardent red
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Mine has an engine light on now. What cable can I buy to scan the
Code and where do I plug in the cable ?
 

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Not to thread jack or anything, but I've been an idiot and forgotten to put my gas cap back on some of my other cars and I've never thrown a code for it. How finicky is that really?

OP, get the code read. Simple. It'll tell you what's up.
You've never owned a Subaru, then. I've owned several. If you simply THINK about a code or wonder if you properly tightened the gas cap, you'll throw a code and light the cel.

Mine has an engine light on now. What cable can I buy to scan the
Code and where do I plug in the cable ?
A code scanner at any auto parts store is $50. Or ask them to read the code for you. Most will do that for free and they'll be fighting each other to do it on a Lotus.
 

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2005 elise touring ardent red
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I bought an innova 3100 obII Scanner.
Plugs into ob2 port under dash and will reset the codes if needed. That way an o2 sensor code from loose gas cap is easily reset.
Cheers,
Andrew


Sent from AutoGuide.com App
 

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Gamera The Atomic Turtle
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I bought an innova 3100 obII Scanner.
Plugs into ob2 port under dash and will reset the codes if needed. That way an o2 sensor code from loose gas cap is easily reset.
Cheers,
Andrew


Sent from AutoGuide.com App
and a $15 rebate on it too thru amazon!
 

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2005 elise touring ardent red
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i did it! i got the code reader from amazon for $15...plugged it in and got the code P0171

from what i googled...this isnt something that will cause my engine to stop but should be taken in to the dealer to fix.

correct>?

where would i find the MAF (mass air flow) so i can try to clean it....anyone got a photo of how to clean it and where it is?
 
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