I've now convinced myself that the cambelt is OK So lets go back to basics.
My Pug started doing an erratic tickover thing. Normally runing ok no problems but occasionally it just refused to idle. When it did this I noticed when I turned off the ignition a whirring noise came from the throttle area and then when I started it again the idle would be ok.
I came out last thursday morning to start the car and it fired, stalled (no idle) then just refused to start at all. Took out the plugs (wet) checked the coil pack (sparks). I suspected the timing belt as it sounded very weak when turning the engine over (just a hunch) but I'm not convinced now, so I've left it alone.
Any suggestions or do I have to get a Pug person and their little computer...
Its a 406 97 XU7JP4 1.8 16V engine
406 xu7jp4 wont start
Moderator: RichardW
406 xu7jp4 wont start
Pug 406L 1997
Transit Campervan 1990
Transit Campervan 1990
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hi skyclad
the buzzing is almost definately the idle control valve.... and I would think that item is your first port of call for getting the car back to normal
remove and clean it first off I would say. to be honest it's one of the many parts of a car I have had little to do with.. but it does seem to give a few problems when it gets sticky or dirty
John
the buzzing is almost definately the idle control valve.... and I would think that item is your first port of call for getting the car back to normal
remove and clean it first off I would say. to be honest it's one of the many parts of a car I have had little to do with.. but it does seem to give a few problems when it gets sticky or dirty
John
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Re: 406 xu7jp4 wont start
This worries me. Are you saying the engine now sounds different when it is cranking over?skyclad wrote:I suspected the timing belt as it sounded very weak when turning the engine over (just a hunch) but I'm not convinced now, so I've left it alone.
A broken cambelt usually makes the engine turn rather more freely on the starter and they can sometimes spin so fast that they make a whirrrrr rather than the normal urgh-urgh-urgh sort of sound.
Fact is, if you have sparks and fuel then all other things being equal, it should do something. Having said that, the mixture does not need to be far away from too rich or too weak before starting difficulties will be noted and there's nothing to say the sparks are occurring at the right time.
A diagnostically equipped person may be most valuable to rule out things like duff coolant temperature, MAP sensors and so on - both the former can wreak havoc with starting and idling...
I'd slip off the timing belt covers though, just to put your mind at rest.
Jim
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
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Stripped down the throttle housing. Checked the sensors stepper motor, throttle position etc. Apart from being covered in oil all seemed fine. Took out the MAP and that was covered in oil as well. Would this cause it to stop the engine firing? Cleaned everything and checked the wiring pipes etc. Will put it all back shortly.
Pug 406L 1997
Transit Campervan 1990
Transit Campervan 1990
- CitroJim
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It could certainly make the car idle very poorly and by extension make it very hard to start...skyclad wrote:Took out the MAP and that was covered in oil as well.
Give it a good dose of carb cleaner, this sometimes crevives a sad one...
Jim
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
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