Peugeot 307 2ltr HDi 136 was not in the product list but that is what I have.
Car revs under acceleration from low level particularly in higher gears or for overtaking, It then drops, catches and accelerates.
It's inconsistant but typical movement is around 1500rpm up to 3500rpm and back down again.
It's almost like the clutch is slipping if that helps describe it.
I took it to a dealer sometime ago and they replaced the turbo under warrenty, TWICE.
As I have the same issue again I can't believe it's that part..
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Re: Car revs high under acceleration from low level
It is very possible to be the part especially if they have the same manufacturer for that particular part. Since alot of parts are farmed out now days and assembled elsewhere and then put in the car somewhere else. It is very possible. If it is still under warranty, let them change it again. All the while, get the customer service advocate involved from the manufacturer to aid in the repair of the vehicle. Just because they have a bum part/s doesn't mean there isn't more they can do to have a more permanent fix.
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recently had similar problem 307 55 hdi engine code RHR getting p1445 + p1435. Hooked car up to launch 431 code reader got p1445 purge flow sensor circuit high input. pa435 a/c ref temp circuit range/performance no contact. Then hooked to snap on ethos p1445 diesel additive system quantity too high. p1435 diesel additive system incorrect message from can bus. checked tank level 1/3-1/2 tank about right for 55k fired pump by shorting briefly appeared to work as youd expect. few hours later after dismantleing most of car looking for depolution ecu stumped ! next day dropped in to local peugeot dealer who i know well after a conflab they agreed these are common codes easy solution! The depolution ecu is found either beside the passenger seat (left) against the sill or depending on where its built behind the fuse board/glove box (where this one was) just remove felt under glove box look up with torch behind fuse board youll see big relay type unit with slide out release (red) unplug clean (toothbrush w40) apply vv slight pressure to pins to adjust contact, refit, clear codes job done !! Common problem apparently worked for me easy & simple place to start !
It could be a number of things, I would check the EGR valve first as that is quite common on the HDI EGR "exhaust gas recycler" reuses any unburnt fuel in the exahust gas and forces it through the engine to keep your emmissions down and improve economy. often these get mucky so you can remove them and spray them with carb cleaner! do not use anything else to clean them.
To check also any air pipes that have splits. tears, rips etc have a feel around the underside of each air pipe as again this can ause that fault.
Lastly check the air mass sensor going into the air box, I cannot reacll where it is on that model but they are very obvious once your looking at it. normally a wire going into the main air intake of the car, unplug or unscrew it and again clean with carb cleaner and refit.
try these before you pay anyone, lastly it could be an injector leak sucking in air, you can test this if you can get to the injectors, poor a little water around each one and see if they blow out any water or bubble up and **** the water in, this can be a cheap fix but the labour invloved may be expensiove, in all honesty buy a haynes book as its pretty simple just takes a while.
Hope this helps, if you are unsure what I mean then get back to me and I will explain.
The electrovalve that controls the turbo waste gate needs to be changed it costs around £40. It is located on the front lower part of the engine block. I have done lots of them they are a common fault after about 50000 miles.