Register Login
Shop4Parts - UK's largest online superstore for FIAT and Alfa Romeo parts
Reply
 
Thread Tools Search this Thread
Old 02-12-2012   #1
Moderator
 
Andy Monty's Avatar
Join Date: Apr 2006
Location: East Yorkshire
Posts: 13,913
Thanks: 1171
Trader Rating: 0
Andy Monty has donated!
United Kingdom 
The Heater FAQ...........

There seems to be a fair few questions on the forum about this so here goes..............





My fan doesn't work:

After checking the relevent fuses (check handbook for fuse locations) on the s1 model the fuse is here:
Click image for larger version

Name:	heater fuse.JPG
Views:	1350
Size:	75.4 KB
ID:	110483


First things first check the fan motor...


(Im pinching a few members photos hope they dont mind )



Its up under the glove box removal guide here:

https://www.fiatforum.com/grande-pun...s-removal.html

Check the wires are secure and the plug is inserted into the motor and not been tugged out by a passenger kicking his / her feet about in the foot well.... (plug is marked A in the picture below)


If that doesn't do any good use a multi meter to test for voltage and ground at the plug with the blower turned on.....

regardless of what fan speed you have unless its turned off it will show 12v or so (this is due to the characteristic that the volt meter doesn't draw any power as you would expect it to be a lower voltage on speed 1 getting higher as you go up to 4..... you can test this however with a 12v test light..... it should get brighter as you speed it up.... (Obviously you need the ignition on to test it.)


Anyway if you have 12v and ground at the fan but no spinning fan its safe to say its the motor so either get a new fan or attempt to strip the motor down and clean the armature and brushes. (something ive never done but apparently it is possible) by remove the 2 screws at end of motor and it separates from casing so u can easily clean brushes/slip rings,

Click image for larger version

Name:	brush2.jpg
Views:	597
Size:	337.8 KB
ID:	110978

Click image for larger version

Name:	brush1.jpg
Views:	529
Size:	182.2 KB
ID:	110979


And check the condition of the brushes fiat dont list a replacement set so if worn it looks like a new fan unit unless you can find some 12v brushes that fit


An added test would be to hook the fan up to a 12v supply directly and see if it spins (mind your fingers!)









My Fan only works on speed #4



There are several things that can cause this.........

first off check the multi plug on the resistor pack




(marked B) check this for any burning or melting of both the plug and the wires

damage such as this:











if this has happened the safest solution is a new loom AND resistor but it does require pulling a fair bit of the car apart to do...

https://www.fiatforum.com/grande-pun...ml#post3128503


You can pick a new loom up for about 55 on the bay of e and other online parts suppliers.... make sure you get the modified one which has better wiring apparently

Click image for larger version

Name:	$(KGrHqN,!rUFCNqzW+hbBQm2zj4sYQ~~60_58.JPG
Views:	630
Size:	36.8 KB
ID:	110046

Also ensure you get the correct one (depends if you have A/C or not)

Also whilst your at this point its worth replacing the resistor pack at the same time for the sake of 20, as these can cause the over heating issue so you will be doing the work again in a few months time otherwise.......


Or visit a decent Automotive electrician who should be able to safely replace the plug.....



My fan works on 1 2 4 and not 3 (or any other strange combination)

First off check the plug again also the plug behind the heater control panel on the dash (might be easier to remove the radio and cage to get your hands in (beware of sharp objects and expect to bleed)

If all secure chances are the risistor pack has failed...

This is clipped in the air duct (which helps cool it)

Click image for larger version

Name:	$(KGrHqN,!ocFBY9N)sH,BQ(zeK,jWg~~60_12.JPG
Views:	526
Size:	14.3 KB
ID:	110045

(marked B in the above picture)



EDIT

according to Cinqster355

https://www.fiatforum.com/grande-pun...ml#post3140382


if your plug is dead get yourself to a Vauxhall dealer and order part number # 95508692

https://www.fiatforum.com/attachment...p;d=1355438746





And a thanks to @Cinqster355 @Magic Johnson and @excession for their input on the forum and the pictures they posted which i have shamelessly stolen
Thanks Andi9386 thanked for this post
__________________
What Goes Up Must Come Down.....

Quote Originally Posted by Most Easterly Pandas View Post
Massive gash
Quote Originally Posted by EmmaM88 View Post
Just a little touch up

Last edited by Andy Monty; 15-12-2013 at 18:06.
Andy Monty is offline Reply With Quote Quote 
Old 01-02-2016   #2
Join Date: Jan 2016
Posts: 8
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: The Heater FAQ...........

"Fan only works on position 4 problem" on Grand Punto 1.3 diesel model 2008 is the same...but pin 4 (the burnt out one in the picture) has no connection to the resistor - just 1,2,3, and 5. Looks electrically sound there. Back to the drawing board and all ideas welcome! Worth resting the resistor? Switch maybe?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Paul TJ is offline Reply With Quote Quote 
Old 07-02-2016   #3
Join Date: Jan 2016
Posts: 8
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: The Heater FAQ...........

No evidence of heat damage to the connector but put it back together and all 4 fan positions work fine!
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Paul TJ is offline Reply With Quote Quote 
Old 08-04-2016   #4
Join Date: Dec 2010
Location: Dublin
Posts: 40
Thanks: 2
Trader Rating: 0
Ireland 
Re: The Heater FAQ...........

Does anyone have a part number or link to the modified wiring loom for standard fan, I have the problem of burnt wires to the plug under the passenger footwell, the plug is not damaged, so I Stripped the burnt insulation off and wrapped the two burnt wires with insulation tape, individually of course, but they are getting very hot, so I'm guessing I'll have to replace the loom, or would that Vauxhall plug do the trick for me to splice the wires into? Also, is there a reason as to why the wires are so hot,do I need to check or replace anything else..Thanks in advance


Edit: after a little more digging, I'm presuming my resistor pack may be to blame, found a seller on eBay who sells the wiring harness repair kit plus resistor pack for 35,this looks like this is my option.
Thanks Hagey4 thanked for this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by XtruderZ; 08-04-2016 at 20:42.
XtruderZ is offline Reply With Quote Quote 
Old 09-04-2016   #5
Join Date: Mar 2007
Location: Limerick
Posts: 1,657
Thanks: 59
Trader Rating: 0
Ireland 
Re: The Heater FAQ...........

Check the fan motor, they can start to seize putting a heavy draw on currant. Take it out and oil the bushings.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

digger58 is offline Reply With Quote Quote 
Old 30-04-2016   #6
Join Date: Apr 2016
Location: Wirral
Posts: 31
Thanks: 1
Trader Rating: 0
United Kingdom 
Re: The Heater FAQ...........

Excellent guide , I have the burnt plug wires so have ordered an eBay kit for corsa connector and resister for 25 . The heater would not work at all for me.
I also removed the fan as I found I did not have a pollen filter fitted and found a few leaves in the fan but nothing dramatic so will remove it again, only 3 screws and look to oil the bushings mentioned earlier.
Big thank you I will confirm the fix hopefully next week
Likes varesecrazy liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

hayfaye is offline Reply With Quote Quote 
Old 07-05-2016   #7
Join Date: Apr 2016
Location: Wirral
Posts: 31
Thanks: 1
Trader Rating: 0
United Kingdom 
Smile Re: The Heater FAQ...........

All fixed now the resister was not coming out until I happened to move it sideways and it came outveasy then.
Messed about by the eBay seller, they only sent the resistor and then offered 10 off. But I reordered the parts separately and got them slightly cheaper, will get my money and postage cost back.

Just to repeat easy to use and really helpful guide
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

hayfaye is offline Reply With Quote Quote 
Old 16-07-2018   #8
Join Date: Apr 2011
Posts: 33
Thanks: 3
Trader Rating: 0
United Kingdom 
Re: The Heater FAQ...........

Glad I found this post.
The fan had failed on my son in laws 2007 Punto. Fuse ok so went straight to the connector going into the heater duct and the embedded resistor pack. The front of the connector block was ok but the rear showed a small amount of heat effects. Then pulled out the embedded resistor which looked ok.


So my fix just needed some cleaning of the terminals that were slightly corroded. Then proved the fix by connecting the loose resistor to the connector block and the fan fired up. By the way, the resistor gets very hot so some cooling time was necessary before putting it back into the ducting. Once in the ducting the connector block was fitted back and everything is ok.


But probably the resistor is on its last legs so a new one is needed. Also advised son in law to run it on higher speeds to reduce the load on the resistor.
Likes varesecrazy liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

OldEngineer is offline Reply With Quote Quote 
Old 16-07-2018   #9
Join Date: Jan 2017
Posts: 2,992
Thanks: 410
Trader Rating: 0
Belgium 
Re: The Heater FAQ...........

Job well done !
I just want to add that the resistor block, when in place, is cooled by the air flow, so Don't bother too much about it getting very hot when out of the duct …

BRs, Bernie

If someone here helped You fix -or better, understand- your issue, hit the thanks icon @ bottom right corner, it's free and makes us feel helpy ;-)
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Bernievarian is offline Reply With Quote Quote 
Old 13-02-2019   #10
Join Date: Aug 2015
Location: Sheffield
Posts: 67
Thanks: 4
Trader Rating: 0
United Kingdom 
Re: The Heater FAQ...........

Grande Punto 56 reg
I cannot unplug connector to Heater blower (under glove box to right)
Are there lugs to hold down or a screw
Perhaps it has fused on because of heat??
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by markfor; 13-02-2019 at 09:29.
markfor is offline Reply With Quote Quote 
Old 13-02-2019   #11
Join Date: Apr 2011
Location: Near the M4
Posts: 25,291
Thanks: 957
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Quote Originally Posted by markfor View Post
Grande Punto 56 reg
I cannot unplug connector to Heater blower (under glove box to right)
Are there lugs to hold down or a screw
Perhaps it has fused on because of heat??
Hi. That overheat is quite likely.

What issue makes you want to look?

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

varesecrazy is offline Reply With Quote Quote 
Old 14-02-2019   #12
Join Date: Oct 2008
Posts: 192
Thanks: 16
Trader Rating: 0
Madmike has donated!
Ireland 
Re: The Heater FAQ...........

Picked up a Grande Punto last week, and one of the first issues I faced, was the fan would only run on setting 4

Had same issue as yourself, where it would not unplug, but with some gentle persuasion (brute force and ignorance), I managed to rip the plug apart from the resistor socket!

Needless to say, the whole thing is a total mess, as I can't even make out how many connectors are damaged due to them all being a fused mass.

Anyway, brought it for the NCT (National Car Test)/ MOT this evening, and it failed on no licence plate bulbs, and 2 broken front springs and an advisory on the heater/demister, so I will be attempting to tackle it shortly
Likes varesecrazy liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Madmike is offline Reply With Quote Quote 
Old 18-02-2019   #13
Join Date: Oct 2008
Posts: 192
Thanks: 16
Trader Rating: 0
Madmike has donated!
Ireland 
Re: The Heater FAQ...........

So, I ordered a replacement resistor and a plug with trailing leads to tackle this job
When I finally got in and saw how bad the original one was, I was glad I got both parts!

I cut off the original plug, stripped back the ends of the wires, and crimped on some spade connectors, more connectors on the new plug, and then changed the resistor and fan is now working 100%!

Thanks to everybody here in the forum for all the info they provide, and help make life so easy working on any Fiat!

Link to the items purchased:
https://www.ebay.co.uk/itm/152702239750
Attached Thumbnails
Click image for larger version

Name:	grandeheaterplug.jpg
Views:	36
Size:	76.7 KB
ID:	198029   Click image for larger version

Name:	grandeheaterplug2.jpg
Views:	34
Size:	117.2 KB
ID:	198030  

Click image for larger version

Name:	grandeheaterplug3.jpg
Views:	44
Size:	182.1 KB
ID:	198031   Click image for larger version

Name:	chrome_2019-02-18_22-20-22.png
Views:	44
Size:	139.0 KB
ID:	198032  

Thanks Crackedknuckles thanked for this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

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

Advanced Search

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
FAQ's volxstu I.C.E 17 07-12-2008 11:12
Insurance FAQ Alex Insurance 2 17-11-2005 13:46
(G) FAQ's wimmy Bravo / Brava 1 11-07-2005 10:12
(G) I think we need a FAQ about alloys! Sando Cinquecento / Seicento 1 21-10-2003 02:29