The more I read, the less I know (Purge valves)

[Luckyman01]

What I know.

The car will not start, will crank.

The car will start and run when I jump the fuel pump relay, the relay tests good.

I have checked fuses.

I did have an overflow situation will fuel flowing over at the filler. Likely red herring?

I did look at the charcoal canister and it is dry.

So I am looking for a reason that the car (ECM) is not sending a signal to the fuel pump for some other reason.

So it seems to me that I likely have a misfunction in the vacuum system somewhere..

I currently suspect the purge valve under the manifold.

I did borrow a vacuum tester yesterday and will check that and look for other disconnected hoses.

The AOS is recent and does not seem bad.

This said I am not real confident at this point.

Any thoughts?

David

[The Radium King]

typically that stuff will throw a code? no ecm signal may be something else - ignition switch, cps, etc. - lots of other causes (and associated diagnostics) if you search 'boxster crank no start'.

Originally Posted by Luckyman01

What I know.

The car will not start, will crank.

The car will start and run when I jump the fuel pump relay, the relay tests good.

I have checked fuses.

I did have an overflow situation will fuel flowing over at the filler. Likely red herring?

I did look at the charcoal canister and it is dry.

So I am looking for a reason that the car (ECM) is not sending a signal to the fuel pump for some other reason.

So it seems to me that I likely have a misfunction in the vacuum system somewhere..

I currently suspect the purge valve under the manifold.

I did borrow a vacuum tester yesterday and will check that and look for other disconnected hoses.

The AOS is recent and does not seem bad.

This said I am not real confident at this point.

Any thoughts?

David

[Luckyman01]

The truth is that she did throw a code a couple of weeks ago. I have misplaced my note; ( I do go deer in the headlights sometimes) however it was a 400 series code and referenced a leak.

At the time I cleared it and waited to see. There was not a cel after that.

Today I pulled the purge valve from under the left side manifold and put some vacuum to it. , The valve does not hold air and does a slow bleed down.

Is this possibly it?

David