Register Login
FIAT Auto Specialist Team
Reply
 
Thread Tools
Old 06-06-2010   #1
Join Date: Mar 2009
Posts: 3
Thanks: 0
Trader Rating: 0
United Kingdom 
Preheat failure

Hi

I have a Fiat Stilo 1.9 JTD 2004. 3 months ago, I started getting a 'Preheat failure' message when I started the engine. It flashed for a few seconds and then didn't come up until I turned off the engine and started again.

I got it checked at various garages and till now have got all 4 glow plugs replaced, relay and bulk head checked. There is no problem now according to the mechanic but the failure message still comes up. He says the computer in the car is faulty and needs replacing.

I don't believe the garage as over the last few months, I have observed a pattern which the warning message follows. In March & April, when I started the car in the morning, the warning came up but when I started the car in the afternoon, when the weather was warmer, the message did not come up.

Since 2 weeks ago, when it is not too cold in the morning, say 15-16 deg outside, the warning message doesn't flash but when the temp is below 14 deg, the warning message springs up.

So, it has not got anything to do with engine temperature, coz I drive 1.5 hours to reach office and on cold days, even when I start the car just after turning it off (when the engine is really hot), the warning message flashes, while on warmer days, the message doesn't flash even when I cold start the engine.

Could anybody please tell me how to fix this problem?

I have already wasted over 300 in unnecessary glow plug replacements and other diagnostic fees.

Regards

Abhi
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides | FAQs


Last edited by abhisandhir; 06-06-2010 at 08:15.
abhisandhir is offline Reply With Quote Quote 
Old 06-06-2010   #2
Springer Mad!!
 
Muppet1's Avatar
Join Date: Feb 2008
Location: Somerset
Posts: 945
Thanks: 36
Trader Rating: 0
Muppet1 has donated!
United Kingdom 
Re: Preheat failure

I assume the garage have read the fault codes and deleted them!!! When was the battery last changed as this can also throw errors up.
Aside from the error the car is starting alright isnt it, if so i shouldnt really worry about it but it will be worth checking your battery first.

Have a search for 'Preheat failure' message lots of info on this topic too.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides | FAQs

Muppet1 is offline Reply With Quote Quote 
Old 24-06-2010   #3
Join Date: Mar 2009
Posts: 3
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Preheat failure

Quote Originally Posted by Muppet1 View Post
I assume the garage have read the fault codes and deleted them!!! When was the battery last changed as this can also throw errors up.
Aside from the error the car is starting alright isnt it, if so i shouldnt really worry about it but it will be worth checking your battery first.

Have a search for 'Preheat failure' message lots of info on this topic too.
Hi

I have not replaced the battery ever. But, there is no problem with any other equipment in the car and it starts alright everytime. Should I go to the garage to get the battery checked?

I am still quite amazed about the error message springing up when the outside temperature is below 15 deg. There is not message above this temperature. That's why I believe there is a problem with the temperature sensor. Are there any temperature sensors linked to this circuit? If yes, then where can I find them and are they replaceable?

Thanks

Abhi
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides | FAQs

abhisandhir is offline Reply With Quote Quote 
Old 24-06-2010   #4
It's about GO! not SHOW!
 
Argonought's Avatar
Join Date: Sep 2005
Location: POOLE, Dorset
Posts: 7,337
Thanks: 332
Blog Entries: 1
Trader Rating: 0
Argonought has donated!
United Kingdom 
Re: Preheat failure

You should always consider bad connections whenever anything is temperature related. Check around relay module and also the red 50A supply fuse near battery.

I'm not sure why you're changing heater plugs when they're not even faulty but I can tell you that the relay module can generate false intermittent errors itself.

I had an intermittent glow-plug error for over a year (plugs were fine) before I discovered the relay module was faulty although in my case it always worked at sub-zero temperatures (rather fortunately ) which if why I was in no great hurry to fix it
__________________
------------------------------------------------------
Stilo Dynamic 5 door JTD {150} 02 model in Metallic Grigio Steel with Skyroof & 16" Alloys Mods: New standard springs all round; Tyres: FALKEN ZIEX ZE912; Oil: Mobil 1 TD 0W-40 fully synthetic
Argonought 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
(T) Preheat Fault Warning Jiminspain Stilo 24 13-11-2011 16:51
(G) Preheat Fault Tizzyrb Stilo 6 05-12-2009 09:01
(G) Preheat System KC22 Uno 2 22-08-2008 02:10
(G) 2.8jtd preheat Torq Ducato 4 02-02-2008 15:45
(T) Preheat Fault on JTD Multiwagon NobleSX Stilo 1 20-12-2007 10:14