PCV valve

**Epic69** · 06-14-2005, 12:11 PM

I have a 94 celica gt, and it seems like it is running a bit rough, mostly notice at like low rpm in town. i did find that the PCV valve is not fitting tightly in the crankcase. Could this be causing a vacuum leak and causing my issue? How does one replace that valve? seems like it doesnt come out to easy.

**Pineapple** · 06-14-2005, 12:17 PM

Nop, PCV is in front of throttle. No air flow once throttle is closed. What do you mean by rough? like bouncing up and down? Anyway get a can of throttle body cleaner and clean the throttle body. Make sure you spray a lot into the holes on bottom of TB. Also check and make sure your sparks are good.

**Epic69** · 06-14-2005, 01:17 PM

It will hesitate when going steady speed in town, idle seems very smooth but at low rpm in low gear i can really feel it. sputter go, sputter go etc.... cant figure it out. kind of feels like a car running out of gas, but its not near as noticeable.

**Pineapple** · 06-14-2005, 01:23 PM

Get a bottle of injection cleaner also. Check spark plugs and rotor. Oh could be O2 sensor or plug up cat.

**Epic69** · 06-14-2005, 01:44 PM

I have run through a full bottle of seafoam sucking it into the throttle body while running. seemed to help for a bit. I dont have a check engine light, i thought if it was o2 sensor i would at least have that on.

**Pineapple** · 06-14-2005, 02:08 PM

An old O2 which doesn't heat up enough at low rpm will not through a code. Acturally as long as its not open circuit, there will be no code but you engine will be running rich.
I don't know if seafoam in intake will clean injector or not.

06-14-2005, 12:11 PM	#1 (permalink)
Epic69 Posts: 14 Join Date: May 2005 Last On: 06-20-2005 01:00 PM	PCV valve I have a 94 celica gt, and it seems like it is running a bit rough, mostly notice at like low rpm in town. i did find that the PCV valve is not fitting tightly in the crankcase. Could this be causing a vacuum leak and causing my issue? How does one replace that valve? seems like it doesnt come out to easy.

06-14-2005, 12:17 PM	#2 (permalink)
Pineapple Location: Toronto Posts: 4,296 Join Date: Jan 2004 Last On: Yesterday 06:47 PM	Nop, PCV is in front of throttle. No air flow once throttle is closed. What do you mean by rough? like bouncing up and down? Anyway get a can of throttle body cleaner and clean the throttle body. Make sure you spray a lot into the holes on bottom of TB. Also check and make sure your sparks are good. __________________ http://photos.yahoo.com/fredericklaw http://members.rankmyride.com/pineapplelaw

06-14-2005, 01:23 PM	#4 (permalink)
Pineapple Location: Toronto Posts: 4,296 Join Date: Jan 2004 Last On: Yesterday 06:47 PM	Get a bottle of injection cleaner also. Check spark plugs and rotor. Oh could be O2 sensor or plug up cat. __________________ http://photos.yahoo.com/fredericklaw http://members.rankmyride.com/pineapplelaw

06-14-2005, 02:08 PM	#6 (permalink)
Pineapple Location: Toronto Posts: 4,296 Join Date: Jan 2004 Last On: Yesterday 06:47 PM	An old O2 which doesn't heat up enough at low rpm will not through a code. Acturally as long as its not open circuit, there will be no code but you engine will be running rich. I don't know if seafoam in intake will clean injector or not. __________________ http://photos.yahoo.com/fredericklaw http://members.rankmyride.com/pineapplelaw

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06-14-2005, 01:17 PM	#3 (permalink)
Epic69 Posts: 14 Join Date: May 2005 Last On: 06-20-2005 01:00 PM	It will hesitate when going steady speed in town, idle seems very smooth but at low rpm in low gear i can really feel it. sputter go, sputter go etc.... cant figure it out. kind of feels like a car running out of gas, but its not near as noticeable.

06-14-2005, 01:44 PM	#5 (permalink)
Epic69 Posts: 14 Join Date: May 2005 Last On: 06-20-2005 01:00 PM	I have run through a full bottle of seafoam sucking it into the throttle body while running. seemed to help for a bit. I dont have a check engine light, i thought if it was o2 sensor i would at least have that on.