Strange engine startup and rattling after replacing fuel injectors..

[denfion]

I just sent my car for regular service in December, and the dealer told me that there was a campaign for my car therefore they replaced the injectors. Since then my car is a bit strange.

First, if I leave my car in my garage for let say two days, then when I try to start the car, initially the engine rpm is just 800-900 rpm , then the rpm will straight away drop to like 500, and it sounds like it is going to stall, the the rpm will straight away jump to 2000rpm and then everything become normal. But if I drive my car everyday, the engine start up is normal.

Second, this is what I noticed yesterday. When I was driving at like 50km/h on third gear, if I floor it, the rpm will raise to around 3000 rpm and then the car is shaking / rattling for several seconds, then the engine back to normal. But the car is normal on first or second gear. I have tried to make that happen again but I couldn't.

Any idea what is going on? My car used to have the long crank issue, and since the dealer updated the software, the long crank has gone and they didn't replace my HPFP.

I will try to record a short video clip for the engine startup and post here.

[ken1137]

Sounds like the HPFP, but they may not replace it unless they can duplicate the problem themselves.

[denfion]

Originally Posted by ken1137

Sounds like the HPFP, but they may not replace it unless they can duplicate the problem themselves.

My car was just out of warranty, and the past two years, I have been trying the kill the HPFP so that they can replace it, but it was just so tough...

[xerox445]

The HPFP has an extended warranty.

[RaihaX]

Originally Posted by xerox445

The HPFP has an extended warranty.

Pretty sure that is only in the states and not in Australia

[wkndracr]

Originally Posted by RaihaX

Pretty sure that is only in the states and not in Australia

If that's true, that's a bunch of BS. In the US they change out the old ones for the updated part, even if it shows no signs of failing, just like your injector campaign. I would inquire about that at the dealer.