Re: RE: Re: Code P1494

From: Tony Cellana (acellan1@tampabay.rr.com)
Date: Sun Nov 30 2003 - 17:34:46 EST


:-)

TonyC

-----Original Message-----
From: Rob S <robert_schultz@yahoo.com>
To: dakota-truck-moderator@bent.twistedbits.net
<dakota-truck-moderator@bent.twistedbits.net>; Bernd D. Ratsch
<bernd@texas.net>
Date: Sunday, November 30, 2003 7:19 AM
Subject: Re: DML: RE: Re: Code P1494

>
>Thanks everyone for the tips. Turns out it was the gas cap. The code
>came on at about a half tank of gas and was on for a few days. (I never
>stop for gas until the fill light comes on, cause I hate standing there
>filling cars.) I filled it on Thursday and the light went out.
>
>I did check the cap before and I seem to have a bit of a corrosion
>problem on the lip of the filler tube. I'm trying to think of a way to
>permamently fix that.
>
>Rob S.
>
>Bernd D. Ratsch wrote:
>> Most of the time, we found that either the small vacuum line to the evap
can
>> or the actual line to the pump was loose/leaking...don't rule out the gas
>> cap though.
>>
>> - Bernd
>>
>> -----Original Message-----
>> From: owner-dakota-truck@bent.twistedbits.net
>> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Jon Smith
>> Sent: Wednesday, November 26, 2003 5:43 PM
>> To: dakota-truck-moderator@bent.twistedbits.net
>> Subject: DML: Re: Code P1494
>>
>>
>>
>> The TSB info you posted is nothing more than a bulletin to "advise"
>> technicians to look somewhere other than the LDP (leak detection pump) as
>> the faulty part which caused the code to be set. However it does not
rule
>> out a faulty pump.
>>
>> Check to make sure there is power going to the LDP, without a scan tool
to
>> acutate the pump, check for voltage while it's commanded on during the
>> self-test (run the test when the motor is bone cold). Also check for
>> leaking or plugged vac. lines going to the LDP. Usually a collapsed vac.
>> elbow or oil-clogged line will prevent enough volume of vac. to allow the
>> pump to actuate properly. T into the LDP vac. hose at the pump with your
>> vac. gauge, it should have engine vacuum at all times, watch the gauge as
>> the pump cycles. If it drops below 13" when the pump actuates, the lines
>> are a culprit.
>>
>> Hope you've got a FSM =)
>>
>> -Jon Smith
>>
>> Does anyone have any more info on this?
>>
>> Thanks,
>> Rob S.
>>
>>
>>
>>
>
>



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