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I have a '95 Eclipse with just under 200k miles on it. Maintenance has generally been very prompt, and over the past four or five years I've replaced damn near everything short of the exhaust system and the block - tranny, clutch, water pump, timing belt, fan belt, radiator. Maybe a couple other minor things, but those are the biggies.
Recently, my car has occaisionally decided to just die in the middle of the road. This is, you know, disconcerting, although luckily it's summer and there's next to no traffic. It seems to happen only when I clutch - the tach just immediately bottoms out, the engine dies, and the "Check Engine" light comes on. I can start it right back up and it runs fine, but that's not, you know, good, and I'd hate for it to happen when I really need to accelerate.
In addition to it flat dying, there are also occasions where the tach is just erratic as shit when I clutch - drops below normal idle, then powers to above normal idle, then stabilizes or continues to ping-pong within a 1k RPM range. It may or may not be worth noting that over the past couple months there's been rather a lot more bass in the engine sound, but I'm pretty sure that something in my muffler got knocked loose by constantly bottoming out my car on the turn into my street (it's like a 40% grade on a two-foot ramp, there's no way an Eclipse can make it without bottoming out. Believe me, I've tried.)
The only thing I could think of that might do this would be some kind of weirdness with either the fuel sensor or the fuel pump itself, but I'm not terribly knowledgeable about cars. I also have negative dollars right now, so I'm really really hoping it's something I can fix myself, cheaply, without a hoist or weird specialty tools.
Fuel pumps either work, or don't. When they don't work, your car dies altogether. Sometimes they intermittently don't work at all, causing your car to die altogether, as I once found out.
I don't know what you are referring to by "fuel sensor." You may be concerned that your now leaking exhaust is now interfering with your O2 sensor, but, though I know nothing specific about Eclipses, I'd say it's a safe assumption that your o2 sensor, if you have one, is further upstream.
There's a lot of sensors that it could be, as well as vacuum leaks. You need to do quite a bit of reading about your car's fuel delivery before you'll be able to diagnose this online.
Might want to check out the fuel injectors too. I had an older Honda that I would have similar issues with. Also, the (and bear with me here) idle stall inhibitor or something like that could be an issue. Basically, it is what tells the car where to idle at, or more specifically where NOT to idle at. But if that was the issue it would be more consistant and not an on again off again issue.
I'd go with Air problem. Check your air intake after the Air sensor and your vacuum lines. I had a similar problem once, turned out the air intake was cracked after the MAF, so at random tiems and under heavy acceleration, it would pull in air through that crack. Since the car didn't know that extra air was coming in, it screwed up the air/fuel mixture and the car would sputter and sometimes die.
The good news is the fix was a tube of epoxy and some duct tape.
It could be the actual sensor though, which would be more money.
Anyways, check vacuum lines and air intake. Tell us how it goes.
This space eventually to be filled with excitement
Just as an option, it looks like the Cash for Clunkers program is going to be extended.
A '95 Eclipse is rated at 26MPG (which is surprisingly close to what I actually get) and therefore does not qualify, unfortunately.
Yeah, O2 sensor was what I was thinking of. Someone on another board suggested the fuel filter might be clogged, so it looks like this weekend - weather permitting, and assuming I can find someone with ramps - I'll be crawling around under the car.
This sounds to me like a mass air-flow sensor problem, but honestly with something this elusive it may be worth it to spend the $60 and have a shop spend an hour hunting it down.
An O2 sensor problem will almost certainly not cause this unless you have something else going on with the car as well; furthermore, an O2 sensor going out will usually cause the engine light to be on all the time. (It isn't, right?)
I suppose it could be some sort of weird wiring fault causing the fuel pump to shut out intermittently but that just seems unlikely to me.
I recently had a fuel pump problem with my 98 Mustang 6 banger.
Once it started it ran fine. No stalling at all, but getting it started was the problem. When turning the key on I could hear a poot, poot, poot sound coming from the fuel pump as it tried to push gas through the line. Early on I had to crank it a few times to start it but once it was running it never stalled, probably because of the vacuum in the fuel line. Eventually it got to the point where it wouldn't start at all. Took it in for service, replaced the pump and all was good again.
This sounds to me like a mass air-flow sensor problem, but honestly with something this elusive it may be worth it to spend the $60 and have a shop spend an hour hunting it down.
An O2 sensor problem will almost certainly not cause this unless you have something else going on with the car as well; furthermore, an O2 sensor going out will usually cause the engine light to be on all the time. (It isn't, right?)
I suppose it could be some sort of weird wiring fault causing the fuel pump to shut out intermittently but that just seems unlikely to me.
This man makes sense.
Also, Car Talk is the best thing ever.
This space eventually to be filled with excitement
Posts
I don't know what you are referring to by "fuel sensor." You may be concerned that your now leaking exhaust is now interfering with your O2 sensor, but, though I know nothing specific about Eclipses, I'd say it's a safe assumption that your o2 sensor, if you have one, is further upstream.
There's a lot of sensors that it could be, as well as vacuum leaks. You need to do quite a bit of reading about your car's fuel delivery before you'll be able to diagnose this online.
The good news is the fix was a tube of epoxy and some duct tape.
It could be the actual sensor though, which would be more money.
Anyways, check vacuum lines and air intake. Tell us how it goes.
When I had some vacuum problems my tach was erratic.
A '95 Eclipse is rated at 26MPG (which is surprisingly close to what I actually get) and therefore does not qualify, unfortunately.
Yeah, O2 sensor was what I was thinking of. Someone on another board suggested the fuel filter might be clogged, so it looks like this weekend - weather permitting, and assuming I can find someone with ramps - I'll be crawling around under the car.
-but-
By all means change it to eliminate a variable.
An O2 sensor problem will almost certainly not cause this unless you have something else going on with the car as well; furthermore, an O2 sensor going out will usually cause the engine light to be on all the time. (It isn't, right?)
I suppose it could be some sort of weird wiring fault causing the fuel pump to shut out intermittently but that just seems unlikely to me.
I recently had a fuel pump problem with my 98 Mustang 6 banger.
Once it started it ran fine. No stalling at all, but getting it started was the problem. When turning the key on I could hear a poot, poot, poot sound coming from the fuel pump as it tried to push gas through the line. Early on I had to crank it a few times to start it but once it was running it never stalled, probably because of the vacuum in the fuel line. Eventually it got to the point where it wouldn't start at all. Took it in for service, replaced the pump and all was good again.
Or, just do a search or poke through the archives.
If you did get on the show, though, they'd probably just blame the catalytic converter and call it good.
This man makes sense.
Also, Car Talk is the best thing ever.