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Old 03-19-2003, 06:25 PM   #1
KCramer
Scooby Newbie
 
Member#: 3624
Join Date: Jan 2001
Location: West V.
Vehicle:
'14 WRX
Satin White Pearl

Default it's missing...

ok folks...i have a 98 dohc RS. about 6 months ago it was missing really bad in the low rpm range(anything below 2100 rpm). the plug wires were the original wires...guess the previous owner "forgot" to change those, so i'm assuming the plugs were original too. so i bought the ngk platinum plugs that cost a rediculous $9.48 each form advance auto parts and brand new oem wires from subaru. the miss was gone and i was happy. well yesterday i notice it was missing again but not like before. this miss is also in the low rpm range but it's between 2k and 2500 rpm...extreamly noticable in 2nd, 3rd and 4th gear all in the same rpm range. once the motor hits 2500 rpm it feels like it just gets a boost, kicks in and goes like normal. what the heck is the deal? any ideas or suggestions? please help. kevin.
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Old 03-19-2003, 06:31 PM   #2
nomadtw
Scooby Specialist
 
Member#: 8037
Join Date: Jul 2001
Chapter/Region: MAIC
Location: Mars, PA
Vehicle:
1998 2.5RS - black
2iggpoints

Default

grounding mod
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Old 03-19-2003, 06:38 PM   #3
KCramer
Scooby Newbie
 
Member#: 3624
Join Date: Jan 2001
Location: West V.
Vehicle:
'14 WRX
Satin White Pearl

Default

i actually did that like 2 weeks ago and reset the computer...??? it was fine until yesterday.
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Old 03-19-2003, 08:54 PM   #4
live311
Scooby Newbie
 
Member#: 10801
Join Date: Oct 2001
Chapter/Region: NESIC
Location: Corrupticut
Vehicle:
2008 Outback

Default

Any CEL's?

Could be:
MAF sensor
ignition module
knock sensor
O2 sensor
gremlins

Try pulling the codes. There could be one stored even if you haven't seen a CEL. Any smrt peeple care to chime in?
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Old 03-20-2003, 01:17 AM   #5
BAN SUVS
Scooby Specialist
 
Member#: 28685
Join Date: Nov 2002
Location: Reno, Nevada
Vehicle:
2004 FXT 4EAT
very STi'd

Default

I am so smart! S-M-R-T! I mean, S-M-A-R-T!

Ha, no really, try just having an engine shop diagnose your car with a big machine. Not all that expensive, and definitely easier than chasing your tail and randomly replacing parts. Of course, if you'd rather go that route, I'd say try testing your coils. Just like you did already, start at the plugs and work back, it usually works that way. Other wise, I'd be worried that you have lost compression or have a serious oil/coolant leak into the cylinder that's missing. Of course it could also be a plugged injector or lack of fuel pressure causing it to be far to lean to ignite. Anyways, that's why I'd just get it diagnosed right, it'll cost a little up front but will save a LOT of frustration over chasing gremlins.
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