Fuel pump shut off - Short in plug

[jammre]

I have a 1999 Pontiac Montana that has had all of the normal problems..., but had a new one that I hadn't read about anywhere yet. While driving home from vacation, about 2 hours away at 8pm (always when trouble happens), the engine shut off and I had to coast to the shoulder of the freeway. The engine wouldn't restart, so I started checking the fuses and relays for the fuel system. Everything checked out fine, so I was afraid that the fuel pump was dead.

I wanted to check and see if the fuel pump was getting electricity, so I got out a test light, and poked it into the positive wire leading to the fuel pump. To my amazement, water started to drip out of the wire where I had poked through the insulation. Back tracking the wire I found it led to a plug on the drivers side near the front of the slider door. I unplugged the plug and it was full of water. The prong that was for the fuel pump was corroded through and had broken off.

I ripped up the carpet, and found the other side of the plug, and ran a jumper wire through the slider door, to the underside of the van, so that I could get home.

I would suggest that anyone with a Montana check their plug to make sure that it seals properly, and doesn't fill up with water. Mine may have been a fluke, but with these Montana's common problems, you never know.

[cdru]

So where did the water come from? There is nothing in the vacinity that carries water that would allow water to leak into the connector. The only thing I would think of would be water kicked up from the road. The connector should have a rubber seal around it to prevent water from entering the connector. If it doesn't, you might want to find one.

[jammre]

The water appears to be kicked up from the road. The plug did have a rubber seal on it, and it was completely inserted and snapped in place. The rubber seal was not keeping out the water. I've already repaired mine, I just thought with all the common problems that the Montana has, that other people should be advised. I hope that by sharing my experience that no one else would need to be broken down along side the road for 2 hours tracking down the same problem.

[abellana]

It looks like my fuel pump finally gave in (Pontiac M 2000). I already replaced the relay (no start condition) and its at it again.. I have n choice this time but to haul it in to the dealer for repairs (ughh sounds costly).

Any idea about the cost?? GM dealer rates..

[jfdepaul]

Originally Posted by jammre

I have a 1999 Pontiac Montana that has had all of the normal problems..., but had a new one that I hadn't read about anywhere yet. While driving home from vacation, about 2 hours away at 8pm (always when trouble happens), the engine shut off and I had to coast to the shoulder of the freeway. The engine wouldn't restart, so I started checking the fuses and relays for the fuel system. Everything checked out fine, so I was afraid that the fuel pump was dead.

I wanted to check and see if the fuel pump was getting electricity, so I got out a test light, and poked it into the positive wire leading to the fuel pump. To my amazement, water started to drip out of the wire where I had poked through the insulation. Back tracking the wire I found it led to a plug on the drivers side near the front of the slider door. I unplugged the plug and it was full of water. The prong that was for the fuel pump was corroded through and had broken off.

I ripped up the carpet, and found the other side of the plug, and ran a jumper wire through the slider door, to the underside of the van, so that I could get home.

I would suggest that anyone with a Montana check their plug to make sure that it seals properly, and doesn't fill up with water. Mine may have been a fluke, but with these Montana's common problems, you never know.

There is a TSB on this junction C305. It can cause other problems like ABS/TCS light and function problems. It is recommended in the TSB to remove the connector form the inside (This is where the water comes from) and clean and fix the connector and locate the source of the water to repair it. I have checked this plug from the underside but the TSB states the problem is from inside where moisture can attack it.

[ryan d. murray]

we had the exact same thing happen the first time it blew the ecm fuse, second time it happened it didn't blow the ecm fuse but it blew the fuel pump relay. could this be a related problem?