Register Login
endrop - for all your online needs
Comment
 
Guide Tools
<!-- google_ad_section_start -->How to clean/replace Fiat 500 1.2 MAP-sensor<!-- google_ad_section_end -->
How to clean/replace Fiat 500 1.2 MAP-sensor
Idling problems? High fuel consumption? etc..
Published by 500F
26-07-2015
Difficulty Level: 2

User Rated:Unrated

Show Printable Version  Email this Page 
How to clean/replace Fiat 500 1.2 MAP-sensor

MAP-sensor measures the amount of air in a inlet manifold and also air temperature. The ecu needs these values to calculate correct fuel/air mixture.

Fiat 500 1.2 8v MY 2009 doesn't have MAF-sensor, only MAP-sensor I think.

Step 1. Disconnect battery negative terminal
Secure the disconnected negative terminal from any contact

Click image for larger version

Name:	battery negative.jpg
Views:	97
Size:	52.6 KB
ID:	157948

Step 2. Find the MAP-sensor
It's easy to access without removing the air cleaner. The MAP-sensor locates on the left side of inlet manifold.

Click image for larger version

Name:	find map.jpg
Views:	319
Size:	98.7 KB
ID:	157949

Step 3. Use T25-torx tool
Undo the Torx-bolt and take care not to drop the torx-bolt on the floor

Step 4. Disconnect the wiring plug
Unclip the yellow clip and gently disconnect the wiring plug

Click image for larger version

Name:	map wiring.jpg
Views:	239
Size:	98.3 KB
ID:	157951

Step 5. Clean the MAP-sensor with specific cleaning product
Let the MAP-sensor dry complite

Click image for larger version

Name:	map cleaner.jpg
Views:	90
Size:	60.9 KB
ID:	157950

Step 6. Refitting is a reversal of removal
Option (Relearn the ecu if necessary)
Drive a long trip to relearn the ecu


We have very low outside temperatures in winter Finland. It may vary -0 celsius to -35 celcius. I was having a problem with my Fiat 500 1.2 8v engine idling. In cold days the idle speed varied a lot and the engine almoust shut down in every three seconds.


The problem doesn't exist during summer so I don't know that the problem is solved. The stock MAP-sensor was a little bit covered with water/oil and I think that waste will freeze in winter and that will cause problems. It would be the best way to renew the MAP-sensor and relearn the ecu but I started by cleaning it.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Old 26-07-2015   #1
Join Date: Jul 2015
Posts: 8
Thanks: 0
Trader Rating: 0
Finland 
Re: How to clean/replace Fiat 500 1.2 MAP-sensor

Read also my Fiat 500 blog!

http://www.500F.net/blog
500F is offline Reply With Quote Quote 
Comment
Currently Active Users Viewing This Guide: 1 (0 members and 1 guests)
 
Guide 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
Guide Guide Starter Category Comments Last Post
(T) map sensor for fiat stilo johnathan19 Stilo 29 16-11-2014 10:07
Punto (Mk2/2b) Fiat Punto 1.2 Mk2 16v MAP Sensor (Used Once) krslynx Auction Watch 0 12-06-2011 14:13
(T) MAP sensor fault - but it isn't? [throttle body clean] Steely Stilo 21 01-05-2008 08:22
(T) can u clean a map sensor? johntra Bravo / Brava 20 13-02-2006 22:16