Subject: intermitent hot start problem

[Huw Powell]

sounds like it might be hall sender related, the sender, the wiring, or
its connector at the dizzy.

Burl Vibert wrote:

> 1987 5kcstq
> 
> I'm wondering if I have a similar problem.  I finally had the
> opportunity to do a bit of troubleshooting and have pretty much
> eliminated vacuum leaks and fuel problems but I still have hot
> start problems.
> 
> I checked the coil wire and it does indeed have too much
> resistance (8000ohm)but it still didn't want to start with
> another wire substituted.  I am not getting any spark at the
> plugs and also not getting any fault codes.  I am getting 12v on
> the BL/R wire on the coil and the coil tests ok.
> 
> Can a temperature sensor stop the car from restarting if it
> thinks it's overheating?  Also maybe I've finally jiggled stuff
> enough as it still doesn't seem to want to start even now that
> it's cooled off.
> 
> Getting dark, getting frustrated.
> 
> Burl Vibert

> Kingston, Ontario
> 
> Tom B wrote:
> >
> > Mike,
> > Have you replaced your coil wire? I have seen this problem caused by bad
> > coil wires in both audis and vw's. The wire will look and test fine, and
> > even produce a spark at the plug, but the spark is not "hot" enough to fire.
> > Apparantly the wire will deteriorate over time and break on the inside. When
> > car is hot and running, no problem. Turn car off and try to restart, no go.
> >
> > Heating/cooling of wire  seems to change resistance or contact, maybe it
> > expands/contracts just enough inside the sheathing to make better electrical
> > connection? Other symptom of this problem is no starting when it is wet/cold
> > out.

-- 
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/