Question about 1993 Subaru Impreza
I bought the car February of this year from my dads close friends shop. He said the lady who owned it said it just wouldn't run anymore and decided to sell it, so they took it and gave it a tune up and oil changed. when I bought it, it didn't have any problems till about 2 months later. now it is backfiring all the time, sometimes its hard to get the car to get up and go to catch up to speed, when going up hills the backfiring and slowness increases making to where most of the time I can barley get the car to hit 25 mph. I know that the car is fuel injected not car-berated so when it kept backfiring I knew something was wrong.
You could have a couple issues, one might be that the timing belts have jumped time. If it's a 1.8L there will be 2 belts, the 2.2L has one belt. I would check timing marks first to see if they are off. 2nd, I would remove the vacuum line from the EGR valve and plug the line. If the car runs better, then you'll need a EGR vacuum solenoid. I hope this info helps!
Posted on Feb 16, 2015
The problem is uncombusted fuel. Can be caused by timing error (cam or crankshaft sensor), failing spark plugs,a faulty ignition coil (quite common). Go for ignition problems first. Check or change spark plugs and substitute ignition coil (I found one at the wreckers).
Posted on Dec 08, 2012
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Posted on Jan 02, 2017
SOURCE: subaru vibration
I had similar problem with my '99 outback. Replaced the front half shafts and seemed much better. A few months later seemed to be comming back so replaced the driver side shaft again and the problem disappeared. I had put in rebuilt shafts and the driver side shaft was not rebuilt correctly.
Posted on May 01, 2009
It sounds like your having some very serious issues.
First off how many miles are on the transmission?
If you have a lot of miles it could be that is it just plain worn out.
When its cold it may work a little better because the fluid is a little thicker and all the parts inside haven't expanded yet(due to heat) allowing them to not "slip" as easily.
I would check your fluid and take a look at it. If its dark and burnt smelling, its time to change it.
If it doesn't smell burned and its a red/oarnge color the fluid is probably fine.
I would then check your fluid level.
If you have to much fluid it can create air bubbles which will cause problems.
If you have to little fluid things won't be lubricated properly and will overheat, and this will also cause problems.
If your fluid level is also fine, then I would check your transmission filter(if equipped). This could be the cause of your problem as well.
If you've made sure you have fresh fluid filled to the correct level and a new transmission filter and it still acts up it is probably just worn out.
Hopefully my tips will get your car going up those hills for a little while longer,
Posted on Apr 04, 2009
You could have any of these problems:
1) vacuum leak- broken air hose or disconnected air hose.
2) water in the gasoline- add a water remover to you gas tank.
3) bad or disconnected spark plug wire(s).
If this were my Forester, I'd take it to a mechanic who has a electronic engine tester..
Posted on May 07, 2009
After a good deal of research and several shops suggesting a rebuild of the transmission, I decided to have the trans fluid and filters changed before doing anything. It was a tough call because it could have been a waste of $125. As soon as the spin off filter was removed you could see it was blocked. So the hydraulic pressure in the system was way down, still enough to engage reverse and enough to work all the shifts, but not enough to engage forward without a slight tap on the accelerator.
My Subaru has 240 000 km on it and I suppose the clutch pack rebuild wouldn't hurt, but as it is now it engages quickly and shifts up are noticeably smoother.
May not be the solution for every case, but it solved my situation.
Posted on May 08, 2009
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