MY 97 subaru impreza 2.2 litre keeps stalling and has rough idle @ low rpms but then other times it runs awsome it always starts right back up after putting it in park ! i replaced oil feul filter air filter spark plugs ! i did notice the exhaust has a gas smell so confused and on a budget cause we just bought a house please help me im so stumped i love my subaru

Should be on or near the fuel injector supply rail.

Here are the most common causes of idle surge, rough idle esp when cold and stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

You're idling speed may not be correctly adjusted or you are having an intake manifold or vacuum hoses leaks.

Check if you have rough idling as well. You may want to clean out the MAF sensor found at its intake manifold. You may use carb cleaners to spray it or tuner sprays. Other than that it could be loose wiring or vacuum hoses. A faulty or dirt Idle Air control valve may cause the problem.

fuel pump may be weak, not giving enough pressure

Here are the most common causes of idle surge, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake

may not be the same but my one would not idle and run like a pig. checked the valve gaps in the end and the exhaust valves had closed up adjusted them and she now runs like a dream..

try adjusting the throttle cable, its a case of loosening a nut, pulling the cable through a bit more and then tightening it back up, you find it on the right hand side of the engine block close to the exhaust manifold.

Jayce

Dear atomicboy488,

A lot of Rain=Possible Water in the Gas=Erratic Running!
This sounds like it may be as simple as cleaning the water or gunk out of the gas tank which is what I always do 1st because it's easy and inexpensive.
If your fuel is contaminated with gunk, grime, WATER and/or bottom junk like rust this will cause stalling AND ROUGH ACCELERATION!
Try spraying a can of starter fluid in the air intake and see if it runs! If it does, it's most likely bad fuel or clogged injectors so....
Fill the tank with High Test, Add some DRYGAS and a good fuel system cleaner or 2 or 3 and this should dissolve all the gunk and clean the injectors! Read & follow the cans' instruction carefully.
If this cures the problem never let your gas tank get below 1/4 and especially never run it to empty as this is when the gunk and/or water will enter the system!
Hope this helps!
Good Luck!
jackiaria
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