Register Login
The UK's No.1 Chrysler Owners Forum
Reply
 
Thread Tools
Old 19-05-2012   #1
Join Date: May 2012
Posts: 28
Thanks: 0
Trader Rating: 0
United Kingdom 
Stilo 115 jtd - Advice needed please

Hi everyone. I'm hoping you would be kind enough to share some of your knowledge with me. I bought a 115 jtd multiwagon just over a week ago and i'm having a couple of issues with it.

1. It seems to lack serious amounts of power below 2500 rpm, above 2500 and it goes like stink, however if i hold it in a gear at say 3000rpm while pulling up a hill i get an "engine fault" message and the engine management light comes on. It then wont rev over 3000rpm. After several restarts the light goes out and it will rev higher again. The fault code generated is P0236.

2. The second problem i'm having is that sometimes (getting more frequent) when pulling away from a standstill it struggles to rev up at all, there is no knowing when its going to do it and to be honest its quite dangerous when pulling out of road junctions etc. After crawling along the problem suddenly clears and off i go leaving a big cloud of black smoke behind me.

I've had it back to the supplying dealer, he has cleaned and moved the pressure boost sensor, both problems still persist. I asked him if it could be a MAF sensor fault because when i un plug it problem 2 is cured, but not problem 1. Apparantly they fitted a new one from euro car parts before i bought the car. Not sure if its relevant but when i unplug the MAF i dont get an engine management light?

Has anyone had a similar experience who could offer me some advice, could there be something else thats maybe causing me these problems (EGR or MAP?) Any advice greatly appreciated
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

ferritt is offline Reply With Quote Quote 
Old 19-05-2012   #2
Join Date: Dec 2011
Location: Warrington
Posts: 53
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

The first issue sounds like the boost pressure sensor, so check all the pipework running to/from isn't split, and check the hoses running from/to the intercooler. If they're all ok, I'd replace (had exactly the same issue and after much faffing about this is what it was.

The second fault sounds like the EGR valve. Remove, clean the blank it off. There are guides for both of these on the site.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Twincam1986 is offline Reply With Quote Quote 
Old 19-05-2012   #3
Moderator
 
Davren's Avatar
Join Date: Jul 2008
Location: London, UK.
Posts: 13,635
Thanks: 1457
Trader Rating: 5
Davren has donated!
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

Quote Originally Posted by ferritt View Post
I've had it back to the supplying dealer, he has cleaned and moved the pressure boost sensor, both problems still persist.
The boost pressure sensor is the MAP sensor. You can't move it, it's fixed in the inlet manifold.

I suspect it's the boost valve they've moved. It was a Fiat modification to move it to the side of the battery box to prevent water getting into it.

Clean the MAP sensor. (carefully)
__________________
Stilo Parts For Sale: Connect Nav+ Map Discs - Wiper Motor (NEW) - JTD/JTDM Front Brake Discs (NEW)

For details, click here: http://www.fiatforum.com/classifieds...0&ppuser=48514
Davren is offline Reply With Quote Quote 
Old 19-05-2012   #4
Join Date: Sep 2008
Location: Wolverhampton
Posts: 6,091
Thanks: 289
Trader Rating: 7
Shadeyman has donated!
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

Your first problem is due to a loss of boost, most likely its due to a split or cracked high pressure induction pipe.

Your second problem is due to your first problem. Because your loosing boost the MAF sensor is detecting far more air flow than is normal so the EML comes on. The reason the EML doesn't come on when the MAF is unplugged is because the car is not able to detect the extra airflow once its unplugged.

Check the induction pipes, high pressure side. Also check the intercooler for leaks.

I suspect your dealer moved the "Boost Control Valve" not the boost control sensor.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Shadeyman is offline Reply With Quote Quote 
Old 19-05-2012   #5
Join Date: May 2012
Posts: 28
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

Thanks for all your advice, yes it was the boost valve they moved from under the wheel arch, my mistake. I've checked all the hoses for leaks and all seems well. Is there a way to test to see if the boost valve is operating correctly? If its stuck would it cause poor performance low down in the revs and then generate too much boost higher up the rev range.

Shadeyman, i understand what your saying about the maf sensor picking up the extra airflow however i still get the eml on and code p0236 even with the MAF sensor disconnected, could this mean the MAP sensor is generating this code?

I suspect the MAF sensor the dealer fitted isn't a bosch one, could this be an issue, I've got it un plugged again so as to get rid of problem 2, which is making thr car dangerous to drive.

Sorry for all the questions
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

ferritt is offline Reply With Quote Quote 
Old 21-05-2012   #6
Stilo at the Seaside!
 
TangerineTractor's Avatar
Join Date: Apr 2011
Location: Near Blackpool
Posts: 672
Thanks: 18
Trader Rating: 0
TangerineTractor has donated!
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

From my experience, the MAF doesn't give a fault when disconnected, but does give one if returning out-of-range readings. However, once the fault has been generated, you can't clear it without fitting a working MAF.
Running without a MAF or with a faulty one affects MPG a bit, but not significantly enough to make the car "dangerous" or even noticeable when driving.
__________________
"The Flying Chicken" - 2004 Stilo Multiwagon Dynamic JTD, Cosmo Blue
TangerineTractor is offline Reply With Quote Quote 
Old 22-05-2012   #7
Join Date: May 2012
Posts: 28
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

Just a bit of an update, new bosch maf sensor fitted, egr and throttle body cleaned. I seem to have cured the over boost problem (eml code p0236). I'm still having intermittent issues with the car bogging down when setting off from a standstill and it wont rev up cleanly. If i dip the clutch and rev it up a bit its then ok, like wise it doesn't do it if i rev it up a bit whilst setting off and slip the clutch slightly. I think my next port of call will be to replace the turbo boost valve and or clean / replace map sensor. Is there anything else i should be looking at?

I've also considered blanking off the egr, are there any negative implications to doing this.

On a seperate note my multiwagons suspension is really high at the rear and really low at the front, is this normal?

Many thanks for your advice so far, its been most helpful.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

ferritt is offline Reply With Quote Quote 
Old 23-05-2012   #8
fiats = frustration
Join Date: Oct 2005
Location: sunny basildon
Posts: 981
Thanks: 67
Trader Rating: 0
roy lovelock has donated!
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

blank off the egr and take it for a spin, it sounds like the solonid is fubar, common fault and i think most jtd owners have had this problem at one time or another. the car feels like its gona stall under 2k reeves.
the mw does sit higher on the rear, this is normal as the car is designed to take bigger loads. both of our car cars are higher on the rear, and the jtd is lower on the front than the 1.6 (jtd is a heavier engine), you can lower the car easily enough but i personally need the extra clearance to allow me to fill her up when we go camping.
__________________
Current:
2006 Peugeot 407 sw 2.0d
2004 Fiat stilo 1.9 jtd dynamic multiwagon
2004 Fiat Stilo 1.6 Dymanic Multiwagon - sold april 2013
2003 Fiat Stilo 1.6 active aircon (with EBD) - Written off 22nd dec 2009
roy lovelock is offline Reply With Quote Quote 
Old 23-05-2012   #9
Join Date: May 2012
Posts: 28
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

Thanks Roy for the info.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

ferritt is offline Reply With Quote Quote 
Old 07-06-2012   #10
Join Date: May 2012
Posts: 28
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

Just been messing with the car again and noticed a valve at the side of the turbo ( round metal thing, fastened with 2 bolts and a shaft coming out the top), what does this do? Am i right in thinking the shaft should move up and down as revs rise and fall? Mine doesn't. Are these prone to failure or is it more likely that the boost valve isn't sending a vacuum to it? Sorry for the poor technical knowledge.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

ferritt is offline Reply With Quote Quote 
Old 07-06-2012   #11
Moderator
 
Davren's Avatar
Join Date: Jul 2008
Location: London, UK.
Posts: 13,635
Thanks: 1457
Trader Rating: 5
Davren has donated!
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

The JTD engine uses a variable vane turbo. The "valve" you mention is a vacuum operated actuator that adjusts the vanes to increase or decrease the boost. The amount of vacuum applied to the actuator is controlled by the boost valve located under the left headlamp, or on the side of the battery box.
__________________
Stilo Parts For Sale: Connect Nav+ Map Discs - Wiper Motor (NEW) - JTD/JTDM Front Brake Discs (NEW)

For details, click here: http://www.fiatforum.com/classifieds...0&ppuser=48514
Davren is offline Reply With Quote Quote 
Old 08-06-2012   #12
Join Date: May 2012
Posts: 28
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

Thanks Davren, my actuator arm does not move when the car is revved up, which i pressume it should. Are the actuators prone to seizing up or is it more likely that its not getting a proper vaccuum from the boost valve?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

ferritt is offline Reply With Quote Quote 
Old 19-06-2012   #13
Join Date: May 2012
Posts: 28
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

I've had the car to my local fiat dealer for a diagnostic scan to try and get to the bottom of these problems. Apparantly the turbo has had it, technician said he was using his computer to call for maximum boost and was getting no boost at all. He stated that all the pipes were intact and that the boost valve and actuator were all working fine so it must be the turbo. Does this sound right?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

ferritt is offline Reply With Quote Quote 
Old 05-10-2013   #14
Join Date: Jul 2013
Posts: 87
Thanks: 4
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

Quote Originally Posted by ferritt View Post
I've had the car to my local fiat dealer for a diagnostic scan to try and get to the bottom of these problems. Apparantly the turbo has had it, technician said he was using his computer to call for maximum boost and was getting no boost at all. He stated that all the pipes were intact and that the boost valve and actuator were all working fine so it must be the turbo. Does this sound right?
Hey mate did u get this sorted? New turbo?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Daveystrings is offline Reply With Quote Quote 
Old 22-10-2013   #15
Join Date: May 2012
Posts: 28
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Stilo 115 jtd - Advice needed please

new boost valve fitted, freed of the rod that goes into the turbo to control the variable vanes, it did move but was very stiff, new genuine bosch maf fitted (2 new previous maf's from euro car parts lasted 2 weeks each ), all problems cured.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

ferritt is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(G) 03 stilo jtd 115 advice please shop soiled Stilo 19 05-10-2011 16:37
stilo jtd dynamic help and advice needed alexbutler Lets Talk FIAT 0 03-10-2010 20:15