Question about Alfa Romeo Cars & Trucks

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Blown diode box

I have an 2003 Alfa 2.4 JTD and replaced a faulty diode box on the alternator. I replced it and it is faulty again. What could be the problem? Thank you

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  • Alfa Romeo Master
  • 14,036 Answers

Problem could be alternator faulty or short in the wires to alternator voltage regulator box.

Posted on Nov 28, 2013

5 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

3dmaster
  • 183 Answers

SOURCE: alfa 147 jtd 16v m

Dear Customer,

Check this than you can solve your problem fully,

1
Check out your sensors that its working batter or not,

2
than check your oilgage,oil filter & oilquility also that mention your engine maintanance,

3
go to your nearest branded showroom or contact your certified service center,

its almostly solved than,

THNX



Posted on May 19, 2008

edwardjwoods
  • 372 Answers

SOURCE: TCS ABS lights on & alternator not fully charging

Alt shoud be putting out 14 to 15.2 volts.

Posted on Jul 25, 2009

  • 1 Answer

SOURCE: Eng Ctrl Faulty warning Fiat Multipla jtd 1.9 '05 plate elegance.

why I do get eng ctrl faulty on my multipla

Posted on Mar 15, 2010

  • 2418 Answers

SOURCE: new alternator fail

If it was rebuilt, could be it was just not a complete rebuild. Some remans are just fixed and cleaned up. Some are completely gone through and good as new. You should have a warranty. Most good remans come with a lifetime warranty or at least one replacement as long as you own the car..

Posted on Jun 06, 2010

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1 Answer

My Alfa 2004 computer box one of the pins is burnt what can I do?


if a pin is burnt on any ECU engine computer
inside a diode may have failed

ECU incl ignition key for Alfa Romeo 147 1 9 JTD 115 hp 5 doors 2004 Bosch...


find a used or referbished unit with same numbers on the outer casing as your damaged ECU
the replacement has to be from the same year and engine type as your car and same number of pins and plug ins

auto electrician might have the equipment and time to referb it

when fitting a used ECU
you may need to re sync the system with a diagnostic tool



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Cannot locate alarm on 03 plate,1.9 jtd model,can't switch of


post the symptoms. "cant switch off what, exactly"?
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or alldata.com1.9JTD,
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Is this a FIAT"? why must i guess.?
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Jun 14, 2014 | Cars & Trucks

1 Answer

Hi,I have a Alfa 2003 156 2.4 JTD. All me warning lights came on and the mechanic told me that the battery and the diode box was shot. He replaced both. It lasted for about a month and the same thing...


Perform a voltage drop test across the battery (charge wire) circuit to the alternator. Corrosive or high resistance spots created in the fuse or path will render the alternator inoperable even though there's nothing wrong with the alternator.

Dec 01, 2013 | Alfa Romeo Cars & Trucks

1 Answer

Engine light on in alfa 156 2.4 jtd saying system control failiure


With engine cold switch on ignition. If fan(s) run then the circuit for that fan(s) is bad. Fan control needs replacement.

Jan 16, 2013 | 2005 Alfa Romeo 156

2 Answers

My 156 sportswagon is burning fuel badly i put 2 gallons in and only got 31 miles for this i can hear an air leak coming from top of engine would this be a likley cause for such poor fuel consumption it's...


an air leak would weaken the mix of fuel to air so giving you better fuel efficiency but a poor power output.
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Jun 14, 2010 | 2000 Alfa Romeo 156

1 Answer

VDC system failure on 156 selespeed


I have the same problem with my 156 2.4 JTD 2002...two most common reasons are:
-steering angle sensor ( "U shaped, black thing" on your steering column/wheel_217.jpg has a lose connection or needs to be changed )
-old battery ( sounds stupid but new battery solved the problem in many cases)...it could also be an alternator problem
I've checked my car with FiatECUScan and it says...see pictures below..._216.jpg
Good luck!
Mark

Jun 22, 2009 | 2000 Alfa Romeo 156

1 Answer

Alfa 147 jtd 16v m


Dear Customer,

Check this than you can solve your problem fully,

1
Check out your sensors that its working batter or not,

2
than check your oilgage,oil filter & oilquility also that mention your engine maintanance,

3
go to your nearest branded showroom or contact your certified service center,

its almostly solved than,

THNX



May 19, 2008 | Alfa Romeo 156 Cars & Trucks

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