I am the prowed owner of a 406 hence my registering here.
Had it a week and the problems have started. Any help much appreciated.
Symptoms
When the engine is cold (needs to have been sat all night, not just a few hours) it is very bad to start if not at all. Engine turns fine, fires for a splt second then goes.
If your lucky and it fires and stays alive the mixture is very ritch. Won't idle. Stops regularly and process starts again. Can be driving along and engine will just stop. Seconds later you can turn it over again.
When warm, and this takes a while, it is fine.
Have tried the following;
new cat
new fuel filter
new sparks
checked air filter
had mechanic look at it, he could not get his diagnostics software to work, he advised;
change fuel pump relay. However I can't find it and looking through this site i don't seem to be the only one. there are 3 relays under dash by drivers knee, i pulled these out one at a time and car still runs so i guess not these. (does a warmed up relay become more relyable?)
he aslo suggested to replace the entire throttle body for a 2nd hand one.....
this is realy a pain. seems a little thirsy too although this might just be when it's not warmed up.
I've got a garage lined up for a weeks time but could really do with having it sorted before then and need to save pennys too.
Any help is very much appreciated.
Dan
