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1997 chrysler concorde
03-14-2016, 02:09 PM
Post: #1
1997 chrysler concorde
1997 chrysler concorde, over filled engine oil and drove car a few days. now having problems lack of power bad mileage. how much damage did i do and what to do to fix.
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03-14-2016, 08:54 PM (This post was last modified: 03-14-2016 08:58 PM by Garner.)
Post: #2
RE: 1997 chrysler concorde
How much did you over fill it? Unless you REALLY over did it I would think you could just drain the extra oil out and; if it was smoking (Blue Smoke), maybe change the plugs. There's also the possibility that it ruined that catalectic converter. Has the Check Engine Light come on? If so, a Scan could point to the problem saving time and money. Record all of the code NUMBERS, post them here, and have the computer cleared.
Thanks, please get back to us.

Thanks for using the forum,
Garner

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03-15-2016, 10:39 AM
Post: #3
RE: 1997 chrysler concorde
(03-14-2016 08:54 PM)Garner Wrote:  How much did you over fill it? Unless you REALLY over did it I would think you could just drain the extra oil out and; if it was smoking (Blue Smoke), maybe change the plugs. There's also the possibility that it ruined that catalectic converter. Has the Check Engine Light come on? If so, a Scan could point to the problem saving time and money. Record all of the code NUMBERS, post them here, and have the computer cleared.
Thanks, please get back to us.

car was about 1 to1 and a half quart over, no smoke, no codes. could you tell me how the converter is effected.
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03-15-2016, 04:48 PM
Post: #4
RE: 1997 chrysler concorde
What can happen if to much oil gets into the converter is it can foul the internal parts just like a fouled spark plug. It would be like a hard baked on gummy substance, which would render it useless in it's job of cleaning up the exhaust gas.

Now, at maybe a quart over I'd venture a guess there's no long term damage provided you lower the level and drive it normal. I'd do that then see what happens over a few days of regular driving. I'd also double check for leaks under the car to make sure you didn't blow out any seals.

Can that extra oil cause a lack of power and poor MPG? Anything is possible. If the converter became clogged with that oil build up I spoke of above that's a distinct possibility. OTOH, if it's not too bad it may burn off in a week or so. The check engine light will give us a clue if it comes on. IOW, there will be a code in storage for an O2 sensor or similar, which will tell us the condition of the cat converter itself.

Let us know how you make out in a few days.
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