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Old 06-30-2019, 01:19 PM   #1
Imprezive2.5
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Default I need help with 95 ej18

I just purchased a 95 Impreza L wagon for 700 bucks. Surprisingly the thing still runs. Not great by any means, but good enough to the point that I think itís worth to fix up the motor that is in it instead of just going straight to a swap.

Iíll go through a list of things that I need help diagnosing.

The motor:

Seems to be building power pretty decent. For the condition it is in at 177k miles I expected worse. The only real issues I see with the engine are oil leaks from the pan gasket, drain plug, and valve covers. And then a misfire issue. But itís not a constant.
In neutral, if I slowly open the throttle body, the engine fires fine. No misses. And I can do this all the way up to 4-5k rpm. (Havenít pushed it past that) At idle it also, fires normally. But if I dump the throttle, or even rev it at any quick rate. There are misfires all over the place. Until the revs reach 3k rpm then it disappears. I checked the MAF and it looks brand new. Squeaky clean. Throttle body also appears the be pretty clean. Air filter isnít that dirty.

Previous owner said he had the fuel pump replaced recently. Not sure if maybe itís a fuel issue? And the work done was improper? I donít find that likely, but Iím not an expert. My coworker suggested replacing the fuel filter. And possibly injectors.

The spark plug wires have what looks like a little corrosion where they plug into the distributor. Previous owner also stated he replaced spark plugs.


The trans:

Clutch feels good to my foot. But maybe itís not in good shape. There is grinding When having clutch full disengaged and putting it into any gear unless itís at low rpm, or I slam the shifter quickly.

Iím also getting a very ďbouncyĒ acceleration rate from lower rpm. Not sure if this is drivetrain related or if itís from the misfire issue. There is also a noticeable grinding noise after 35mph that remains even in neutral. It may be a wheel bearing from what Iíve read. If Iím in neutral and I put my foot on the brake it quiets down significantly. And returns the moment the calipers release. It also is much louder when Turning right where the weight would be on the front left wheel.

I bought this car to rally with and maybe auto cross. So Iím already in the mindset of a full motor and trans swap in the future. But Iím thinking it wouldnít be a bad idea to feel the car out with low power and build the chassis till the motor gives then ej205 swap.
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Old 06-30-2019, 08:34 PM   #2
Boxcar80
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Being a 95 it should be OBD2. This is the first year of the OBD2. Have you checked to see if there are any codes?
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Old 06-30-2019, 10:47 PM   #3
Imprezive2.5
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Quote:
Originally Posted by Boxcar80 View Post
Being a 95 it should be OBD2. This is the first year of the OBD2. Have you checked to see if there are any codes?
I was not aware. Theres no check engine light appearing
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Old 06-30-2019, 10:54 PM   #4
Imprezive2.5
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Quote:
Originally Posted by Boxcar80 View Post
Being a 95 it should be OBD2. This is the first year of the OBD2. Have you checked to see if there are any codes?
I was not aware. Theres no check engine light appearing
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Old 07-01-2019, 04:08 AM   #5
00imprezars
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Quote:
Originally Posted by Boxcar80 View Post
Being a 95 it should be OBD2. This is the first year of the OBD2. Have you checked to see if there are any codes?
96 was first year of OBD2, I have 2 95's with OBD1.
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Old 07-01-2019, 04:13 AM   #6
00imprezars
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Quote:
Originally Posted by Imprezive2.5 View Post
I just purchased a 95 Impreza L wagon for 700 bucks. Surprisingly the thing still runs. Not great by any means, but good enough to the point that I think itís worth to fix up the motor that is in it instead of just going straight to a swap.

Iíll go through a list of things that I need help diagnosing.

The motor:

Seems to be building power pretty decent. For the condition it is in at 177k miles I expected worse. The only real issues I see with the engine are oil leaks from the pan gasket, drain plug, and valve covers. And then a misfire issue. But itís not a constant.
In neutral, if I slowly open the throttle body, the engine fires fine. No misses. And I can do this all the way up to 4-5k rpm. (Havenít pushed it past that) At idle it also, fires normally. But if I dump the throttle, or even rev it at any quick rate. There are misfires all over the place. Until the revs reach 3k rpm then it disappears. I checked the MAF and it looks brand new. Squeaky clean. Throttle body also appears the be pretty clean. Air filter isnít that dirty.

Previous owner said he had the fuel pump replaced recently. Not sure if maybe itís a fuel issue? And the work done was improper? I donít find that likely, but Iím not an expert. My coworker suggested replacing the fuel filter. And possibly injectors.

The spark plug wires have what looks like a little corrosion where they plug into the distributor. Previous owner also stated he replaced spark plugs.


The trans:

Clutch feels good to my foot. But maybe itís not in good shape. There is grinding When having clutch full disengaged and putting it into any gear unless itís at low rpm, or I slam the shifter quickly.

Iím also getting a very ďbouncyĒ acceleration rate from lower rpm. Not sure if this is drivetrain related or if itís from the misfire issue. There is also a noticeable grinding noise after 35mph that remains even in neutral. It may be a wheel bearing from what Iíve read. If Iím in neutral and I put my foot on the brake it quiets down significantly. And returns the moment the calipers release. It also is much louder when Turning right where the weight would be on the front left wheel.

I bought this car to rally with and maybe auto cross. So Iím already in the mindset of a full motor and trans swap in the future. But Iím thinking it wouldnít be a bad idea to feel the car out with low power and build the chassis till the motor gives then ej205 swap.

As a first step, I would suggest to pull the plugs, see how they look, make sure they are properly gapped, clean up all the terminals, buy new wires, change the fuel filter.
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Old 07-01-2019, 06:03 AM   #7
Boxcar80
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Quote:
Originally Posted by 00imprezars View Post
96 was first year of OBD2, I have 2 95's with OBD1.
Actually it was introduced 1/95 so some of the 95s were OBD2.
I would check to see what kind of fuel pressure you are getting. For port injection you should be getting around 40 psi.
For your grinding noise I would lift the car on all 4 corners and check for slop in the wheels.
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Old 07-01-2019, 07:19 PM   #8
Imprezive2.5
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Quote:
Originally Posted by 00imprezars View Post
As a first step, I would suggest to pull the plugs, see how they look, make sure they are properly gapped, clean up all the terminals, buy new wires, change the fuel filter.
Doing fuel filter and and spark plugs today. (If the plugs in it are good Iíll replace wires.) I also got seafoam for my injectors. Not so sure how effective it is but I hear lots of good things about it
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Old 07-01-2019, 07:19 PM   #9
Imprezive2.5
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Anyone have any advice for the transmission issue?
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Old 07-01-2019, 07:21 PM   #10
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Quote:
Originally Posted by Boxcar80 View Post
Being a 95 it should be OBD2. This is the first year of the OBD2. Have you checked to see if there are any codes?
I was not aware. Theres no check engine light appearing
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Old 07-02-2019, 12:45 AM   #11
CosmoTheCat
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98 My FMIC
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No distributor, it's a coil pack. If it's corroded, clean it up. It might be time for a new one.

Trans sounds like your syncros are shot. Junkyard it, or if you're feeling froggy, do the transmission swap.
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Old 07-02-2019, 03:33 PM   #12
Imprezive2.5
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Quote:
Originally Posted by CosmoTheCat View Post
No distributor, it's a coil pack. If it's corroded, clean it up. It might be time for a new one.

Trans sounds like your syncros are shot. Junkyard it, or if you're feeling froggy, do the transmission swap.
By ďjunkyardĒ it, do you mean go get a junkyard tranny/parts?
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Old 07-02-2019, 11:18 PM   #13
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Yeah, a junkyard tranny.

I mean, you can drop a couple grand on a remanufactured unit, or on having yours rebuilt, but that's serious money.
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Old 07-04-2019, 03:39 PM   #14
Davesanrn
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Quote:
Originally Posted by Imprezive2.5 View Post
I was not aware. Theres no check engine light appearing
When I first brought my 2001 home, it had no check engine light, but it did have issues. Put it on the OBD tool and it showed inop CEL. REplaced that bulb, and all the sudden there was a CEL. So that was the first step
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Old 07-04-2019, 09:55 PM   #15
2slofouru
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Check for the OBD connector under the dash driver side. If yours was built late enough in 95, it could be OBD2. If not, you still have OBD1 and would have to connect two spade connectors near the steering column together, to try and get a fault code. Both my 95s were OBD1. If it's OBD2, you can easily plug a cheap scanner in and hope for a fault code.

Try and borrow a coil pack from someone, easy swap just to check. If that's not the issue, I'd check fuel pressure next. You can check that on the hose that leads from the fuel filter to the engine. The fact someone recently changed the pump makes it more likely that could be an issue. They could have installed a crap pump or didn't connect it correctly inside the tank.
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Old 07-12-2019, 10:12 AM   #16
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Quote:
Originally Posted by 2slofouru View Post
Check for the OBD connector under the dash driver side. If yours was built late enough in 95, it could be OBD2. If not, you still have OBD1 and would have to connect two spade connectors near the steering column together, to try and get a fault code. Both my 95s were OBD1. If it's OBD2, you can easily plug a cheap scanner in and hope for a fault code.

Try and borrow a coil pack from someone, easy swap just to check. If that's not the issue, I'd check fuel pressure next. You can check that on the hose that leads from the fuel filter to the engine. The fact someone recently changed the pump makes it more likely that could be an issue. They could have installed a crap pump or didn't connect it correctly inside the tank.
I have figured out the low end misfire issue. It was spark plugs and wires, coil pack appears to be brand new. Kind of feels like my exhaust flow is being restricted though. It almost sounds like the flow is being blocked. Not sure. My buddy says he can get me a type x exhaust for it so I may just swap and see how it runs.

On a side note, I feel as if my throttle body has a leak somewhere. Canít seem to pin point it though. I thought it was a vac leak but now Iím fairly certain the hissing noise is coming from the throttle body. Idk, I could be wrong.
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Old 07-16-2019, 03:54 PM   #17
wtdash
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Cat(s) converters could be plugged.

Yep, sounds like wheel bearing.

Again...check for codes - there should be 2 black and 2 green connetors under the driver's side dash. Black is for 'stored/historical'; Green for current/active.

From Legacy site, but Impreza should be same:

http://legacycentral.org/library/literature/codes.htm
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