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94 eclipse -- engine light, rattling, rough idle, idles to 0 and dies when a/c is turned up
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winterlight
Anonymous Poster
samuelaxon@gmail.com
May 26, 2008, 7:44 AM
Post #1 of 2
(2258 views)
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94 eclipse -- engine light, rattling, rough idle, idles to 0 and dies when a/c is turned up
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I have a 1994 Mitsubishi Eclipse with 110,000 miles on it, manual transmission. It ran pretty nicely for a while but then I drove from Phoenix to Kansas City and back. Ever since, four things have begun happening:
1) The engine light is always on.
2) The engine or something near it rattles loudly when the car is running.
3) The car normally idles at around 1100rpm but it periodically (once every two or three seconds) drops 200-300 rpm when I'm sitting at the stop light. Doesn't matter if I'm in nuetral or not, it always does it so long as I don't have my foot on the gas.
It's not so bad when the A/C is off, but for each notch I turn the A/C up the idle dips lower, and if I have the A/C on full-blown, it drops all the way and dies instantly every single time I take my foot off the gas. This is a big problem since I live in Phoenix!
It seems like the problem is worse when it's really hot outside (like 95 degrees plus, and this is separate from the A/C issue), but I could just be imagining things.
4) It seems to sometimes be leaking something -- not enough that you'd notice it happening, but I'll notice wet stains beneath the car on the driveway if I haven't driven it in several days. The car also has started to generally smell like fuel or something.
I know very little about cars, but I was hoping someone might be able to point me in the right direction. Thanks!
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dave284
Enthusiast
/ Moderator
May 26, 2008, 2:00 PM
Post #2 of 2
(2245 views)
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Re: 94 eclipse -- engine light, rattling, rough idle, idles to 0 and dies when a/c is turned up
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These vehicles are a pain (if) they are in need of repairs, Its gonna take a high-tech scanner for the check engine to be diagnose,and for the rattle, loose heat shield/motor mount/muffler and other related parts of the exhaust system...trace the sound and inspect and check the pulleys.The air flow sensor/ or the idle control which is built in the throttle body/or the ecm could be at fault...a diagnostic would help out a lot,the stains under the car might be fuel....oil doesn't evaporate and the presence of fuel odor would suggest that you could have a fuel leak ......the fuel line is located next to the firewall and the filter is mounted there too....if you have a leak just follow your nose and inspect under the car for wetness.
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