[DML] Re: Engine Dies at idle HELP!

["David Teitelbaum" <jtrealty@xxxxxxxxxxxxx>]

As long as the Lambda is in "fixed" mode you should not hear the valve
fluctuate. If it is fluctuating in fixed mode you probably have a bad
connection somewhere. On one car I did it had a bad ground connection
going to the Lambda ECU. There are actually 2 ground connections for
the ECU, each going to a different place. The problem turned out to be
a dirty connector in the box next to the ignition coil. There are a
bunch of plugs there and some of them had corroded connectors. Tracing
the circuit found the area so I just cleaned everything. The hunting
is caused by several factors including:
The Lambda cycling.
The idle motor fluctuating.
Vacuum leaks
Unbalanced firing of cylinders (different compression, worn plugs, bad
wires, etc)
Some cars will just hunt a little no matter how much you do. Vacuum
leaks are the #1 cause. The hoses are 25 years old and are hard,
cracked, or loose. The first step if you really want to fix vacuum
leaks is to just replace all the little hoses. Next do a compression
test, clean the injectors (and replace the seals) then replace the
ignition wires and spark plugs. Most times doing this will either
completely fix the hunting or at least make it minimal.
David Teitelbaum
vin 10757




--- In dmcnews@xxxxxxxxxxxxxxx, "valleyrat12" <valleyrat12@xxxx> wrote:
>
> Does that mean that when first warming up the frequency valve should 
> be buzzing at a steady rate? Mine fluctuates causing the typical 
> idle hunt even when the engine is cold, but it is buzzing. 
> 
> Nathan
> 2277
> --- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> 
> wrote:
> >
>







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