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Old 07-11-2010, 04:27 PM   #1
XenoWolf
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Default I need engine advice. I've run out of ideas.

Here's the story:

Tuesday - Drove the car to and from work (~70 mi) with no issues.
Wednesday - Got up in the morning, started the car and let go of the ignition too quickly. It started, but was chugging like crazy and had NO power.

I've reset the ECU. Didn't help
I've checked the cats -- they're fine.
I've replaced the timing belt -- it's fine and the car is timed correctly.
I've replaced plugs and plug wires. The two front plugs had gas/oil all over them. Didn't help.

Here's the thing. Twice the car has started up and worked PERFECTLY. Once immediately after I removed the cats, and once immediately after I replaced the timing belt. It doesn't last though. It went right back to chugging the next time I started it up.

My next step is taking it to a garage to do a compression test. I suspect that it's something electrical since it has worked fine twice, but I want to be sure.

Any ideas? Could this possibly be a bad alternator or bad CPS? Bad ECU? I'm getting really pissed off at this car teasing me.

Oh, and I had one CEL that popped up, but after replacing the timing belt it went away. No more CELs are active.

1999 Impreza L 2.2L w/ 5-speed
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Old 07-11-2010, 04:46 PM   #2
Jard
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Spark distribution block thing that the wires plug into? Swap yours with a friend's and check.

If the plugs really have oil on them you have some other issues but that shouldn't cause this.
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Old 07-11-2010, 04:46 PM   #3
anders8
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Is there an air idle control valve on that engine? They get sticky and stop working...
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Old 07-11-2010, 04:59 PM   #4
XenoWolf
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Quote:
Originally Posted by anders8 View Post
Is there an air idle control valve on that engine? They get sticky and stop working...
Yeah, my IAC valve has had a personality for years now. It messes with my idle from time to time but I don't think that it would affect the engine this badly. The engine feels like it's misfiring.

Jard: Maybe. I could probably grab one off of Andrew to test. I'm just baffled by the lack of a CEL though if it is electrical/ignition related.
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Old 07-11-2010, 07:31 PM   #5
XenoWolf
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Update: I believe that it may be the coilpack.

Cylinders 1 and 3 are both dumping fuel. They're also connected to the exact same coil.

Can anyone verify if each coil uses a separate CPS? If so, I imagine that the CPS may also be a culprit.
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Old 07-11-2010, 11:04 PM   #6
Jard
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My '95 SOHC 2.2 would not spark at all with a bad cam sensor...
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Old 07-12-2010, 07:46 AM   #7
Patrick Olsen
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CPS? Not familiar with that term.
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Old 07-12-2010, 10:53 AM   #8
Jard
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Quote:
Originally Posted by Patrick Olsen View Post
CPS? Not familiar with that term.
I think he means either crank or cam position sensor, but I'm just guessing.
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Old 07-12-2010, 02:08 PM   #9
Patrick Olsen
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Didn't really catch this before...
Quote:
Originally Posted by XenoWolf View Post
Cylinders 1 and 3 are both dumping fuel. They're also connected to the exact same coil.
Are they? I always thought 1 & 2 and 3 & 4 were paired. I know on all of the various coil packs I've seen you could actually see (just based on the construction of the coil pack) the two coils - one for the front 2 cylinders, one for the rear 2 cylinders. Like so:



I've had coils with both male and female terminals and they were all the same.

Pat
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Old 07-12-2010, 03:26 PM   #10
XenoWolf
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Pat: You're right. I'm retarded and can't read apparently. I read it as 1 & 3 last night when I was looking at it for some reason.

Sorry about the vagueness of the CPS term. I was referring to the crank position sensor, not thinking about having a cam sensor. I've since found that I have one of each and where they're located.
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