"Check Engine Light"

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1999 Honda Civic CNG, Flashing check engine light

I have a 1999 Honda Civic CNG with 140,000 highway miles. Initially, while driving the car at highway speed, the check engine light would flash and the car would lose power. I would have to stop and ...
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2answers
1k views

Engine Revving/Misfiring - Formerly Running Lean - No Trouble Codes Now

For a few months now my 1999 Toyota Avalon XLS (California model - this apparently affects the emissions specs - I'm in NY however) with around 105k miles has been giving me these totally random ...
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1answer
381 views

2004 Buick LeSabre sputters in wet weather only when accelerating

My 2004 Buick LeSabre recently started behaving strangely. At first I thought I had filled up with some "bad gas." I used Heat to treat and after a week or so it seemingly started to work fine. Then ...
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1answer
552 views

2002 Ford Focus CEL blinked for a minute and then turned off

I have a 2002 Ford Focus with around 100k miles on it. I just brought it back from the mechanic for a fuel pump replacement. As this question shows. Anyway I was driving around going uphill when I ...
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1answer
2k views

CEL 12, 21, and 55 on '94 Jeep Grand Cherokee

So, I've pulled the codes from my car based on the helpful information provided here: Check Engine Light on '94 Jeep Grand Cherokee Now, I need just a little help understanding what the codes ...
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2answers
4k views

Key cycling to determine cause of check engine light

The check engine light is on in my 1989 Ford E250 Econoline van. I heard from a mechanic (who changed my oil) that there's a "key cycling" process that will cause the light to flash in a certain ...
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1answer
320 views

2004 ford crown victoria - Fuel Cap pressure

My check engine light came on yesterday. with that another little light that says "check fuel cap" also lights up but only stays on for about a second or two. I have never noticed this before so ...
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2answers
540 views

Check engine light on for O2 sensor (Oxygen) but O2 sensor has been replaced

Someone told me it could be a minor leak somewhere but the check engine light does indicate the above on Mazda 626,year 2000. Could the code be misleading?
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1answer
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How to fix Accord 1998 EX V6 OBD-II trouble code “P0108” — MAP (Manifold Absolute Pressure) Pressure Circuit High Input?

A few days ago, my Honda Accord 1998 V6 EX's "check engine" light came on. Since then, the engine experiences instability during idle. At stop lights, I can hear the engine having trouble stay running ...
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1answer
360 views

Difference between steady and flashing CEL?

What is the significance of a flashing CEL, vs. a steady one? I recently read and cleared the codes on my 1996 Lincoln Mark VIII. After driving it for awhile, the CEL came back on. During that ...
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1answer
9k views

Check Engine Light on '94 Jeep Grand Cherokee

How do I get Check Engine Light codes (ODB-I) from a '94 Jeep Grand Cherokee, and where can I look them up?
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1answer
1k views

Cause of P0440 on 1999 Subaru Legacy Outback

I get a P0440 code on my Outback on almost every highway trip over 5 miles. Is this caused by the leak in the gas tank or could it be something else?