engine codes

[tod10]

i have a 95 blazer. the check engine light is on i had it scanned and got these codes- p0326 knock sensor 1 ckt range/pref bank 1 or 1 sensor and p0441 evap emission control system purge flow fault.
can anyone tell me what this means and how to fix this also where to locate this?

thanks

[BlazerLT]

You need to replace the driver's side knock sensor and service the purge solenoid on your evap charcoal canister.

[tod10]

thank you so much! can u tell me the location of these?

[BlazerLT]

I suggest you pick up a haynes or chilton's repair manual for your truck to help you in the future.

Knock sensor is on the driver's side center.

I don't know where the purge solenoid is on your truck seing I have never yet had to service one yet.

[rlith]

The purge solenoid runs across the drivers side of the upper plenum... Kinda looks like to small vac diaphrams housed in plastic connected by about 1-1/2 inches of 3/8 rubber hose....But just do the knock sensor first (sits between plugs 3 and 5 and has a single wire coming off of it. To remove it use a 22mm deepwell socket. When you pull it, immediately put in the new one as you will drop some coolant...

[BlazerLT]

And make sure you use some thread seal tape on it before you install it.

[rlith]

they usually come with orange sealant on it..

[BlazerLT]

I am just saying if it doesn't not to install it without any thread sealant on it.