Register Login
FIAT Auto Specialist Team
Reply
 
Thread Tools Search this Thread
Old 04-09-2020   #1
Join Date: Sep 2020
Posts: 4
Thanks: 0
Trader Rating: 0
USA 
Alternator change - battery light, engine light, rough idle, power steering loss etc

Okay so the problem is, from the beginning, I was driving down the freeway and my battery light came on. So I pulled over and my car died. Mdot jumped it and I made it home. Found out it was my alternator. But also found out that I had a bad ground. So replaced the ground then replaced the alternator. After replacing the alternator, my battery light is still on. Not only that but itís having a slightly rough idle and when you rev the RPMs past 3500, the engine light comes on (Iím not sure what happens or how it runs with engine light on), when I turn the key into accessory the engine light will stay solid for about 30 seconds then flash about 8 times then stay solid, But when I disconnect the battery and reconnect it, engine light goes off and doesnít come back on until rpms go past 3500 battery light is still on and still slight rough idle. Also, when idling, my power steering doesnít work. Like if Iím driving and stop at a stop sign, my power steering goes out and comes back immediately when I take off. Revving engine does not make it come back. (My power steering is electronic). Also my rear hatch will not open.
None of this was ever a problem before the alternator went out and was replaced. I read somewhere that I would have to have something electronically reset at the dealership? Any help is genuinely appreciated.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Elainemckuhen is offline Reply With Quote Quote 
Old 04-09-2020   #2
Join Date: Apr 2011
Location: Near the M4
Posts: 26,490
Thanks: 1019
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Re: Alternator change - battery light, engine light, rough idle, power steering loss

Hi

The battery light..and the power steering

Both sound like alternator output issues.

Ok basics:

The engine battery is @12.4 volts

Once the engine runs..it spins the alternator
ADDING POWER..
The battery should read 14.4volts .. that is power from the alternator.. the steering NEEDS this power

Get those power figures checked.. if its getting less than 14 volts at the battery terminals.. you have a problem

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 04-09-2020   #3
Join Date: Sep 2020
Posts: 4
Thanks: 0
Trader Rating: 0
USA 
Quote Originally Posted by varesecrazy View Post
Hi

The battery light..and the power steering

Both sound like alternator output issues.

Ok basics:

The engine battery is @12.4 volts

Once the engine runs..it spins the alternator
ADDING POWER..
The battery should read 14.4volts .. that is power from the alternator.. the steering NEEDS this power

Get those power figures checked.. if its getting less than 14 volts at the battery terminals.. you have a problem

Charlie
Yes I am. I seem to always be getting anywhere from 13.4 to 13.9. Never over. What all do I need to check?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Elainemckuhen is offline Reply With Quote Quote 
Old 04-09-2020   #4
It's always more involved
 
John202020's Avatar
Join Date: Feb 2016
Location: Tynemouth
Posts: 3,843
Thanks: 168
Trader Rating: 0
John202020 has donated!
United Kingdom 
Re: Alternator change - battery light, engine light, rough idle, power steering loss

Has the battery failed?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

John202020 is offline Reply With Quote Quote 
Old 12-09-2020   #5
Join Date: Sep 2020
Posts: 4
Thanks: 0
Trader Rating: 0
USA 
Quote Originally Posted by John202020 View Post
Has the battery failed?
No? But I think it is a battery issue. Like I said Iím only getting 13.4-13.9 with car running. But now, my back hatch has started working like normal again. And also I noticed now that when Iím at 3000rpms, my battery light goes off. So Iím assuming itís a battery issue?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Elainemckuhen is offline Reply With Quote Quote 
Old 1 Week Ago   #6
Join Date: Jan 2021
Posts: 11
Thanks: 2
Trader Rating: 0
USA 
Re: Alternator change - battery light, engine light, rough idle, power steering loss

It sounds like the new alternator is not working correctly or is not wired correctly. As above you should be getting 14.4v when running across the battery terminals.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

blaster88 is offline Reply With Quote Quote 
Old 1 Week Ago   #7
Moderator
Join Date: Mar 2010
Location: Dorset
Posts: 9,185
Thanks: 992
Trader Rating: 0
United Kingdom 
Re: Alternator change - battery light, engine light, rough idle, power steering loss

Quote Originally Posted by Elainemckuhen View Post
But also found out that I had a bad ground
That's common on European 500's also. Fortunately easily cured, but do double check you've cleaned off any corrosion around the ground strap mounting point(s).

New batteries, and new alternators, can occasionally be supplied faulty - it happened to me once with an alternator. Spent quite awhile figuring it out before realising the new replacement had a faulty winding.
__________________


"Just 'cos you're not paranoid, doesn't mean they're not out to get you"


Last edited by jrkitching; 1 Week Ago at 10:56.
jrkitching is online now 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
(T) Loss of power steering & battery light on andiebradley Grande Punto 18 23-07-2018 21:02
(T) Whining noise, battery warning light and loss of power steering oldmanhouse Grande Punto 2 13-09-2015 13:26
(T) Power Steering/Battery light - Which alternator A sismithin Grande Punto 0 30-10-2013 11:53
(T) Battery light on loss of power steering matt baillie Grande Punto 6 10-12-2012 17:28
(T) New Battery... ABS Light, Battery Light and Power steering light on...? Hamilton Cinquecento / Seicento 9 19-12-2010 16:18