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Old 04-10-2008, 11:22 AM
Arthur Dalton Arthur Dalton is offline
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
<< Pin 8- code 36 (purge valve) could this have been caused from me pulling the vacuum line off?>>>

It could have , but it should have reset when you put the hose back ON
The purge system has an ECU criteria that has to be met in order to energize.
The demands are :
>80 C coolant temp
MAF sensor quanity spec./ flow range
Engine load condition

When the gas tank reaches 30 ml/bar pressure , the vent opens to the canister.
When purge demands are reached, the HFM module sends are sig to the purge switch-over valve in the form of 5/10/20 Hz.. which hz sig required is determined by engine load input to HFM.
You can feel these pulses if you put the purge in your hand.. the reason for the pulsing is so the engine does not get a large gulp of air to the intake, which would be what you did by disconnecting the vac line..the amount of intake air through the purge is determined by which Hz range the ECU uses, with each having a different time duration, so it is metered.

So, the purge is regeneration/emmissons control of tank venting at a metered pace as to not effect the a/f/ mixture to any large degree.
The most common problem with them is they get full of crap from the canister and they stick either open or closed..each will bring up a code 36 on HFM..a trick/remedy is to squirt WD40 in the valve and the hose downstream [ towards canister]..that allows the engine to suck the fluid through the valve as it pulse, thus cleaning/clearing it from the vac and pulses.

If it is to far gone, replace it, but only after confirming that the ECU is getting an electrical sig to it...



<<>>

You have a bad brake switch and your Throttle cable is sticking or there is not enough slack in it. Lube it and check for slack at the adjuster...make sure you don't have a bunched up rug/mat on the floor near the gas pedal.
On the brake sw. it has been detected to have an intermittant fault and you should just chanage it b/c it will get worse and it is not the brake light circuit that is going bad , it is the other set of contacts that are used by various other systems...so don't post back that " But My brake lights are working fine"..that is not the circuit/contacts of the sw we are concerned with.........it is a multi circuit/function switch with more than one set of contacts.
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A Dalton

Last edited by Arthur Dalton; 04-10-2008 at 11:40 AM.
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