2003 Peugeot 206 hdi intermittent lift pump problem
Discussion
Hello,
I'm having a very frustrating problem and I hope that you can help me. My Peugeot is a 2.0, and I've been dealing with this intermittent failure problem for three years, and my mechanic, who is a Peugeot specialist, can't find the source. Here is a breakdown:
1. At first, the car was fine. But from time to time, if I stopped on my way home to do an errand, it wouldn't start again. The lift pump in the back wouldn't come on. I would call a tow truck to take it to the garage, but it would always start again in the morning. After an episode, it would start and run normally for weeks, or months, and then would do it again.
2. The first evolution in the problem started last year. I would try to start the car first thing in the morning, but the pump wouldn't come on. By this point, my mechanic told me to try to disconnect the battery for a few minutes, reconnect, and try again. Sometimes this would work after one disconnect, sometimes after two or three. It could take anywhere from 5 to 45 minutes to get the car to start. It once started for me just after I'd called the truck - I turned the key to roll down the windows while I waited and the pump came on. As usual, after an episode it would run normally for several weeks or months.
3. The latest change is that now it can take 2 or 3 days for the car to decide to turn the pump on when it fails. Most recently is this past Saturday. I was out running errands, and on my last stop, it wouldn't start again. I spent an hour disconnecting/reconnecting the battery, bumping the starter, letting it rest, trying again, disconnecting the pump, etc... with no luck. I tried again today, with no luck. It's still parked at the supermarket where I left it on Saturday. I'll go back in the morning to try again.
Here are some things that we know:
1. It's not the pump. One of the last times I took it to the mechanic, they changed the pump to test the system, and it wouldn't work. We know that it's electrical.
2. All of the wires and contacts have been cleaned and checked.
3. This car doesn't have a relay to the pump.
4. It's linked to hot weather, anything over 10 degrees, but much worse in the summer.
5. My mechanic is very frustrated by the problem, and thinks that it's the ECU. But I've read that the lift pump is not controlled by the ECU.
6. This is not the original pump, so it's been changed at least once in the car's life.
Any help you could give me would be greatly appreciated. I know I should get rid of the car, but at the moment it's not an option. It's got to last me at least another year. Thanks so much.
I'm having a very frustrating problem and I hope that you can help me. My Peugeot is a 2.0, and I've been dealing with this intermittent failure problem for three years, and my mechanic, who is a Peugeot specialist, can't find the source. Here is a breakdown:
1. At first, the car was fine. But from time to time, if I stopped on my way home to do an errand, it wouldn't start again. The lift pump in the back wouldn't come on. I would call a tow truck to take it to the garage, but it would always start again in the morning. After an episode, it would start and run normally for weeks, or months, and then would do it again.
2. The first evolution in the problem started last year. I would try to start the car first thing in the morning, but the pump wouldn't come on. By this point, my mechanic told me to try to disconnect the battery for a few minutes, reconnect, and try again. Sometimes this would work after one disconnect, sometimes after two or three. It could take anywhere from 5 to 45 minutes to get the car to start. It once started for me just after I'd called the truck - I turned the key to roll down the windows while I waited and the pump came on. As usual, after an episode it would run normally for several weeks or months.
3. The latest change is that now it can take 2 or 3 days for the car to decide to turn the pump on when it fails. Most recently is this past Saturday. I was out running errands, and on my last stop, it wouldn't start again. I spent an hour disconnecting/reconnecting the battery, bumping the starter, letting it rest, trying again, disconnecting the pump, etc... with no luck. I tried again today, with no luck. It's still parked at the supermarket where I left it on Saturday. I'll go back in the morning to try again.
Here are some things that we know:
1. It's not the pump. One of the last times I took it to the mechanic, they changed the pump to test the system, and it wouldn't work. We know that it's electrical.
2. All of the wires and contacts have been cleaned and checked.
3. This car doesn't have a relay to the pump.
4. It's linked to hot weather, anything over 10 degrees, but much worse in the summer.
5. My mechanic is very frustrated by the problem, and thinks that it's the ECU. But I've read that the lift pump is not controlled by the ECU.
6. This is not the original pump, so it's been changed at least once in the car's life.
Any help you could give me would be greatly appreciated. I know I should get rid of the car, but at the moment it's not an option. It's got to last me at least another year. Thanks so much.
TiaRay said:
I thought it was strange that the mechanic said there was no relay. How else would the signal to the pump be sent?
There will be a relay, but it's hidden in a BSI - and it's the BSI that's breaking down (I suspect)MY 2000 had a more normal relay, whereas about 2003 they switched to BSI and CAN control, so I guess you are right on the early edge of that, which is not a good place to be.
Just wire up a supply from the ignition?
I think fuse box and relays on them are under the bonnet in a box on the passenger side of engine bay.
They are prone to water ingress into the fuse box if it has relays they are on the underside of the fuse board I think.
Has been a while since I’ve got that in depth with them.
Always worth a look as it costs you nowt to look.
Or if you got breakdown cover get them to recover it to garage or home
intermittent electrical faults are a pain in the backside to find
They are prone to water ingress into the fuse box if it has relays they are on the underside of the fuse board I think.
Has been a while since I’ve got that in depth with them.
Always worth a look as it costs you nowt to look.
Or if you got breakdown cover get them to recover it to garage or home
intermittent electrical faults are a pain in the backside to find
The starter was changed, but the pump decided not to work twice since the starter was replaced. The first time was about 2-3 weeks ago, but I managed to get it started again by disconnecting the battery several times and jiggling the wires in the ECU. It took 30 minutes. Today, the pump came on, the car started, then the engine cut off and the pump refused to come on. I had to leave it 50 kilometers from my home, in a place with very little public transport, and because of the Christmas holidays, my mechanic is closed until the New Year; Could the new starter be causing the problem to get worse? How can this be fixed? I can't get stranded anymore!
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