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Hello, my name is Andrei and I am a mechanic.I have a problem with a Peugeot 207 1.4 vti 95hp.
It has performance issues, the lack of power is obvious.No error codes on obd.No vaccum leaks, fuel pressure is good, injectors fine,compresion good,the catlyst is fine, steady idle, it starts fine, STFT around 0,LTFT around 0.Can u give me an advice please?thnks.
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Did the performance level drop gradually over time or a suddenly for no apparent reason?
Is there any correlation to the drop in performance along with a fluid change?
Is the transmission fluid level OK and/or the correct type?
You seem to have really hit on the basics; Sometimes the lube shops have been known to drain the transmission accidentally instead of the engine oil and then fill incorrectly.
There was no mention of fluid checks in your list of inspected items is the only reason I ask.
Let’s start with the begining .The car was brought to me because of some transmision issues and unsteady idle and performace issues.I ‘ve replaced the gearbox , and the wideband O2 sensor .The trans problem and unsteady idle was gone but a lean condition code was still preasent and the loss of power to.After 2 days the lean condition din not come again but loss of power still present.The loss of power was sudden in the past and remained so. The oil in gearbox is dextron 2 as specified by prod. and the oil in engine is very good.
I was thinkig of some chain timing slightly off…the car has 180000 km.P.s. Sorry for my english grammar, I am from Europe.
If the timing chain is worn, you’d think that would affect the basic valve timing and the VTI system as well, which could lead to poor performance. I’m just speculating, however. And, with a chain, the mileage seems a bit low to me for that to be an issue, unless the parts are light-duty.
Is there any capability to alter the ignition timing on this engine?
Does this engine have a timing chain or a timing belt?
It is possible the timing is off due to a stretched chain/belt or broken tooth on a sprocket..
It sounds like you have the right idea, maybe a quick check of the timing marks on the CAM and crank sprockets for proper alignment.
After a quick look at a youtube video on chain replacement, checking the marks is not an easy task. They sure did make use of every mm under that hood of that car.
At least the sprockets appear to be made out of metal and not plastic.
Do you happen to know what the driving habits of the owner are?
Is the driver a want to be racer constantly driving in the 6000 RPM range that may have caused premature failure on the chain?
The car is owned by a firm, so many drivers on that car with no care for it what so ever.But stil this is a bmw developed engine with valvetronic and double vanos,it should be very well engineered.The car seems to lose a bit more power when it start to warm.I ordered the new chain set ,I will see tomorow the results.
I would wonder about a restricted exhaust… a vacuum gauge would be a way to check this quickly and easily. ..
Karl
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