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WagN2NR
12-23-2002, 03:57 PM
Hears what’s up: I start the car, drive to where I’m going (engine warms up), and then come to traffic/red-light. I feel the engine revving by its own power. I look at my gauges and it’s jumping from 150 rpm to 500 rpm. This has happened about 7 times so far. It started after I started to put mid grade gas in my car, so I stopped doing that but its still revving. Under normal conditions, the car will hold 150 RPM’s at idle speeds. To stop the revving, I have to boost the RPM’s to 1500 till it stops jumping. Hers some things that I think it might be: new high airflow filter, new fuel filter, and cold weather. I don’t think its a lack of air, because the new filter is supposed to bring in a lot more air then stock (Is to much air bad?). I don’t think it’s the electoral, it still happened when I turned my heater, radio, and lights off. Could it be the fuel pump? Or maybe a clogged line? Can you offer any ideas?

Ty, WagN2NR (AKA James)
b18cya-T
12-23-2002, 04:56 PM
try a flame thrower or a small block of c4
TXKompressor
12-23-2002, 05:16 PM
Sounds like Vacuum Lines are wacked or you may have an air sensor there that is bad... what year is the scooby?
WagN2NR
12-23-2002, 05:24 PM
1992 Subaru Legacy
TXKompressor
12-23-2002, 05:26 PM
So its OBD1 and it is probably a vacuum hose that is messed or a vacuum sensor...that is my shot at it...
WagN2NR
12-23-2002, 08:59 PM
Originally posted by MugenRacer
So its OBD1 and it is probably a vacuum hose that is messed or a vacuum sensor...that is my shot at it...

OBD1? (Old Busted Down 1?) I should turn on my car and look/listen/feel for a leek? I should check Main Air intake, PCV, and By-pass air con. Valve? If it were a fuel line, woud it leek fuel? (My car has a line that takes the air in the gas tank and puts it in the Throttle body) Could it be my Knock senser? or maybe Fuel Press. Reg.?
scoobyworx
12-25-2002, 09:33 AM
On my car it had to do with the TB gasket and a leaking vacuum line.
WagN2NR
12-29-2002, 12:31 AM
Originally posted by B18C1TurboTeg
On my car it had to do with the TB gasket and a leaking vacuum line.

What is TB? Do you know where the leaking line was? Did you fix it yourself?

I look for the leak, but i cant find it... What should I do?
Talus
12-29-2002, 04:20 PM
TB=Throttle Body
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