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Technical Slight kangarooing

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Technical Slight kangarooing

Right, this problem has returned although only very slight and more of judder. It happened yesterday on the motorway doing 70ish while gently accelerating up an incline. Since it happened last time i've had a new engine but could i be that unlucky that whatever caused it last time is doing it again? I'm having a new MAF fitted next week, maybe it could be that? What about something simple like a fuel blockage or fuel filter?

Any ideas guys? I'm going to the Isle of Wight end of July and i don't fancy it doing this for 4 hours down to Portsmouth! However i intend to have the car serviced before we go. I hope its something simple like that!

Thanks

Phil
 
rewind.

So, on a previous engine, it kangarood?

On the current new/rebuilt engine, its doing the same?

remind me, what other parts have you replaced?

id be giving serious thoughts about the fuel filter holder and pipes, injectors, even exhaust.

not 100% convinced it will be the maf but yeah, change it wont do any harm, also consider the boost valve-going up hill at that speed you are calling on the turbo etc, so could be an issues with that part of the system?
 
Clivvy said:
rewind.

So, on a previous engine, it kangarood?

On the current new/rebuilt engine, its doing the same?

remind me, what other parts have you replaced?

id be giving serious thoughts about the fuel filter holder and pipes, injectors, even exhaust.

not 100% convinced it will be the maf but yeah, change it wont do any harm, also consider the boost valve-going up hill at that speed you are calling on the turbo etc, so could be an issues with that part of the system?
Click to expand...

Hello Clivvy, i've not seen you on here for a while?! :)

Yeah its a new engine (new to me!) and the last engine did it a little bit too. I've had a new MAF, EGR, oil and air filter last october, crank sensor, cambelt kit inc. tensioners etc, water pump. Other things include clutch pulley, alternator belt, backbox, all i think of so far, plus non engine related things :) I'm getting a new MAF and i cleaned the MAP a few months ago although it seemed ok. The fuel filter however was last changed January last year.

Phil
 
Last edited:
Hey Phil! yeah Ive been spending a lot of time breaking my 4x4 for spares, and thankfully touch wood the Stilo has been just brilliant (I really do love that car).

anyhoo, yours!

Its very hard to diagnose a problem such as yours, but I would be looking at all parts excluding the engine and what was replaced. The boost valve I would check (if its wet/soaked, then that could be the issue)

But I would also start looking at the intercooler, hoses etc to the turbo. don't get me wrong, it doesn't seem like there is a major problem there-or you wouldn't be getting 64MPG! But it is possible that you have a loose hose clip or similar, that is only apparent under load, this is how I have come to the conclusion...a Few years ago I had problems with my 4x4.

I did a lot of diagnosis on my 4x4, and this meant removing a lot of parts to replace injectors and so on. On that car, the intercooler was top mounted, with a side mounted air intake. Generally driving it all seemed ok, until one day I was driving home in atrocious wet weather. Driving through some deeps water I got juddering, but it carried on. then, when I hit a long stretch of road, that winds Up to a steep incline I put mi foot down, and upon doing so it began to judder even worse-loss of power and so on but it carried on. I stopped at the top of the hill, everything seemed fine and the drive home was fine. When it was dry, I checked over my air intake and I/C, and sure enough, I hadn't quite tightened up the I/C hose clip. I nipped it up, and it was perfect from then on.

so, with that in mind, id check those hoses as best you can.(y)
 
Clivvy said:
Hey Phil! yeah Ive been spending a lot of time breaking my 4x4 for spares, and thankfully touch wood the Stilo has been just brilliant (I really do love that car).

anyhoo, yours!

Its very hard to diagnose a problem such as yours, but I would be looking at all parts excluding the engine and what was replaced. The boost valve I would check (if its wet/soaked, then that could be the issue)

But I would also start looking at the intercooler, hoses etc to the turbo. don't get me wrong, it doesn't seem like there is a major problem there-or you wouldn't be getting 64MPG! But it is possible that you have a loose hose clip or similar, that is only apparent under load, this is how I have come to the conclusion...a Few years ago I had problems with my 4x4.

I did a lot of diagnosis on my 4x4, and this meant removing a lot of parts to replace injectors and so on. On that car, the intercooler was top mounted, with a side mounted air intake. Generally driving it all seemed ok, until one day I was driving home in atrocious wet weather. Driving through some deeps water I got juddering, but it carried on. then, when I hit a long stretch of road, that winds Up to a steep incline I put mi foot down, and upon doing so it began to judder even worse-loss of power and so on but it carried on. I stopped at the top of the hill, everything seemed fine and the drive home was fine. When it was dry, I checked over my air intake and I/C, and sure enough, I hadn't quite tightened up the I/C hose clip. I nipped it up, and it was perfect from then on.

so, with that in mind, id check those hoses as best you can.(y)
Click to expand...

Rightio, i'll get all you mentioned checked out. Thanks for your help Clivvy (y)

Phil
 
Well it did it again today but around town in 2nd and 3rd gear and again up an hill. I'm still waiting for my MAF. When the MAF is fitted i can eliminate it if the problem persists. So then i can get what Clivvy suggested checked out.

Phil
 
philipb82 said:
Well it did it again today but around town in 2nd and 3rd gear and again up an hill. I'm still waiting for my MAF. When the MAF is fitted i can eliminate it if the problem persists. So then i can get what Clivvy suggested checked out.

Phil
Click to expand...

Whenever it happens i'm able to accelerate out of it. I hope its the MAF so it'll a simple solution! I may get the fuel filter changed anyway.

Anymore comments welcome :)

Phil
 
for me, fuel filter once a year. Its an easy job to do and cheap, and is part of an annual service.

Fiat filter will be fine, bosch slightly better. Don't go mad spending money on them, but a decent filter will have a marked improvement on the running of the engine.
 
phil, have you actually tried driving with the MAF unplugged?

it would throw up a code, but if the car drives the same with it unplugged, then the MAF is at fault. if the car drives like a dog with it unplugged, then the MAF is PROBABLY ok, but I would still at the very least clean it with electrical contact cleaner.
 
Well the last time i had the fuel filter changed was last January. I am going to have a service before July ready for my holiday :)

I've not actually unplugged the MAF. I was told by a garage that this is dangerous and could over fuel and flood the engine?! I have actually unplugged the MAF before i was told this.

Phil
 
philipb82 said:
Well the last time i had the fuel filter changed was last January. I am going to have a service before July ready for my holiday :)

I've not actually unplugged the MAF. I was told by a garage that this is dangerous and could over fuel and flood the engine?! I have actually unplugged the MAF before i was told this.

Phil
Click to expand...

Is this true? My car is booked in next Monday for the MAF testing and replacing if necessary, its took them long enough! Just a thought, since my engine was fitted last October my car has rarely seen the motorway. The only decent run its had was to York and back up the M1/A1. Could this have anything to do with it? Anyway i'll see what happens next week and take it from there. Just to add - its not been doing it that much recently.

Phil
 
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I don't know if its true or not, but I have never known a car with a faulty or unplugged MAf to OVERFUEL the car-the defaults in the ECU prevent this, hence "limp home mode" which certainly doesn't over fuel to the point of flooding the engine!!
 
The car is in tomorrow for the MAF looking at, i hope they sort it. Although its getting checked out tomorrow its not doing it as much now and when it does its usually when the engine is cold. When up to temp it doesn't seem to do it. Is this a vital clue?! :)

Phil
 
philipb82 said:
New Bosch MAF fitted although they there were no fault codes present when they put it on diagnostics! I'll see what happens now.

Phil
Click to expand...

I went out in the car earlier for well over an hour, mixture of motorway and normal roads. I'm sure it did it again a couple of times but on an incline in 2nd or 3rd gear. It only happens when using the accelerator. Also it feels like the cars power momentarily fades and is felt through the pedal - a bit difficult to explain! However its not like an old problem when the car used to totally lose power for a couple of seconds then came back. It was like the car was self braking.

So doesn't look like that has sorted it :(

Phil
 
you need to get it onto a diagnostic machine and drive, I get the distinct impression you either have a fuelling issue of some sort, or a pedal problem-the diagnostics should highlight the issue as you drive.

Definitely something not right. Have you checked the I/C and pipe work from it?
 
Clivvy said:
you need to get it onto a diagnostic machine and drive, I get the distinct impression you either have a fuelling issue of some sort, or a pedal problem-the diagnostics should highlight the issue as you drive.

Definitely something not right. Have you checked the I/C and pipe work from it?
Click to expand...

My mechanic is having a look over the weekend. Is it really worth trying some Millers treatment?

Phil
 
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