Question about 1989 Peugeot 405
1999 peugeot 406hdi drives great on flat lossing power on hills heavy black smoke on hills have changed airflow meter and egr valve still the same [ there was no 406 in list so picked 405] car i have is as above 406
Hi, i think i answered you in another post.
If not then the likely cause of your problem is turbo related the most common cause is one of the pipes going to the turbo has a small split in it causing this problem.
Nearly all the diesel turbo cars with your problem usually means a pipe needs replacing for the turbo this will need to be checked as it can be difficult to find the damaged pipe because they work under high pressure so actually seeing the damaged part can be difficult so check properly.
If you are unsure then get a garage to check this as they will know the fault and will have a good idea exactly which pipe is damaged.
Worst case of this will be that the turbo needs replacing but this is in the most severe of cases the turbo can blow if the pipe has been damaged for to long as it will be working under the wrong pressure.
What happens is when you acelerate the turbo builds up pressure giving you more power when you need it but when the pipe becomes damaged this pressure is lossed and you then lose power and will cause black smoke coming out of exhaust.
Hope this is some help to you but if you have any problems or questions then give me a shout back and ill be glad to assist you further ok
Posted on May 20, 2008
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Posted on Jan 02, 2017
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