Waterlogged 99 Boxster

[Paul]

VW special tool 3217 is used to remove the fuel pump. Spec is 52 ftlb so it is tight.

The fuel pump relay can be jumped by connecting posts 30 and 87 (3 and 5).

[ARModen]

Thanks Paul. I did some more checking, I checked the fuel pump relay and it was good, but when I jumpered it out and turned the car on I can now hear the fuel pump running. I'm charging the battery on the charger now and I'll see if it starts up. The fuel pump runs continuously right now even when the ignition is off so this can't be a permanent fix.

So now the question is where does the control signal for that relay come from?

D Williams said:
"Just for fun.. if it's been raining that much, check under the drivers seat and see if it's wet?? lost my control mod due to water. It controls a ton of stuff. If it's wet water will enter the box from the back side lower plug and ground things out. It can be causing the alarm to kill the spark. Engine will still turn over but will not crank."

So next place I'm going to check is under the seat. I don't see any water or water marks behind the drivers side, but maybe I go some in around the doors considering the weather that week. I believe that's the alarm control module. The durametrics thing didn't report any errors in any control modules so maybe it's just a bad wire.

[Paul]

http://www.samstagsales.com/vwaudi2.htm#fuel

[ARModen]

Haha, that's a $300 factory tool! Only Porsche...

Luckily I shouldn't have to get into the tank now as long as I don't burn up the pump with my current set up. Battery is almost charged then I'm going to start back tracking the control signal for the relay.

Any tips?

[Paul]

Originally Posted by ARModen

Haha, that's a $300 factory tool! Only Porsche...

Luckily I shouldn't have to get into the tank now as long as I don't burn up the pump with my current set up. Battery is almost charged then I'm going to start back tracking the control signal for the relay.

Any tips?

right above the real one is a $134.50 alternative.

Note that this is a VW tool, oh wait VW owns Porsche....

[Paul]

Have you checked the alarm computer under the seat to see if it got wet?

[ARModen]

Originally Posted by Paul

Have you checked the alarm computer under the seat to see if it got wet?

Nope I'm back to square one now. I charged the battery and tried to start it with the fuel pump relay jumped out and it still doesn't run. The fuel pump definitely works and I don't see any water in the gas.

If it was a relay control problem the jumper would have fixed it. So now it's a bad spark issue or back to the fuel filter being clogged. Anyone know where I can check fuel pressure at the engine? Or atleast downstream of the filter? The filter is in a bad location to access with only jacks.

[Paul]

If the alarm computer got wet it will cause this issue, stop and check it.

[ARModen]

The fact that they'd make a $300 tool for this instead of just just putting a flanged cover with a few bolts on it is pretty amusing. The 911's has a gasket and 4 screws.

[Paul]

The DME through relays 1 and 2 in the rear and relay 13 in the front are all needed for the car to start.

FP relay control is pin 63 on the DME

[ARModen]

Originally Posted by Paul

The DME through relays 1 and 2 in the rear and relay 13 in the front are all needed for the car to start.

But will 1 or 2 in the rear turn off the fuel pump? I'm going to start it in a sec here when the battery charger is done, but I assume the ignition system is working and I'm getting a spark because it was running poorly after the problem arose. So I think it was firing but becoming fuel starved.