[V8] Instrument cluster fix

[Ed Kellock]

I know Ingo has reported that he did this and it corrected his issues as
well.

I have spent the last three nights doing this and still no change in the
behavior of my IC.

I still have dead fuel and temp gauges and a pegged oil pressure gauge. In
the morning they will usually be all working correctly, but within a few
miles, poof again. 

Really annoyed at this point.

Ed
 


-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf Of
Mike Arman
Sent: Thursday, April 08, 2010 9:29 AM
To: v8 at audifans.com
Subject: [V8] Instrument cluster fix



 From 2005 posting:


> I had similar very symptoms on my V8 - fuel and temp gauges dropped 
> sporadically to zero, came back with a whack on the dash pads. The pc 
> traces were fine, the problem was cold solder joints at the pins that 
> the interboard ribbon cables connect to.
> 
> These are assembled by "wave soldering" - does the whole pc board at 
> one pass.
> 
> Problem is that if there's enough heat to solder the big parts (high 
> thermal mass), it is too much for the ICs and other smaller parts and 
> they get toasted.
> 
> I've seen this on other electronics equipment - *exactly* the same 
> thing, cold solder joints on the large pin connectors - PC power 
> supplies are good for that.
> 
> Cure is remove the cluster, take the boards off one at a time, and 
> with a fine pencil iron, re-solder the bases of the interboard 
> connection pins one by one. Put it all back together (now is also THE 
> time to change all the burned out dash lights) and dollars to donuts 
> your problems will be cured. I found four bad ones and some more 
> suspect ones. You will be able to wiggle (as opposed to flex) the pins 
> slightly in the pc board if the solder joint is bad. Also, a cold 
> solder joint is "grainy" or "pebbly" instead of smooth and shiny. Use 
> a magnifying glass.
> 
> Use some contact enhancer on re-assembly just as extra insurance.
> 
> I did mine almost two years (now SEVEN years!!!) ago, and that part 
> (at least) has worked flawlessly since.
> 
> Best Regards,
> 
> Mike Arman V8Q, lights, blinks, starts, runs (be afraid . . . )



_______________________________________________
Audifans V8 mailing list
Send posts to: mailto:V8 at audifans.com
Manage your list connection: http://www.audifans.com/mailman/listinfo/v8

You can help keep the audifans site running by shopping at
http://audifans.com/shop/

No virus found in this incoming message.
Checked by AVG - www.avg.com 
Version: 9.0.801 / Virus Database: 271.1.1/2797 - Release Date: 04/07/10
12:32:00