in article snipped-for-privacy@v33g2000cwv.googlegroups.com, neex at snipped-for-privacy@cogeco.ca wrote on 2/10/07 12:21 AM:
Ok here's the latest... I replaced the ECT and the IAT... ALthough I
> think the fuel economy may have gotten a little better, I still have
> the cold starting problems. I have replaced the fuel pump relay 3x
> with known working replacements. When the relay 'clicks' and the pump
> whirls, it will start on a dime. I still think that there may be a
> chance that a faulty ignition switch is causing this problem.
>
> As stated previously, fuel pressure tested over 60psi at the rail
> shraeder test port, the pump will run with 12V to the test connector
> under the hood EVERY time, the battery and alternator tested fine
> (battery over 12V and alt constant at just over 14.6V), all tune up
> stuff has been done (plugs, cap, rotor, wires, etc).
>
> I thought that either the ignition switch, crank sensor, or oil
> pressure sensor may be at fault here. Can anyone comment? I have a
> baby on the way as we speak (due date was yesterday) so I'd like to
> get this damn Jimmy off my to-do list).
>
> What else should I be checking?? I checked nearly every 5V reference
> sensor and they came back fine (slight adjustment to the TPS but that
> was unrelated).
>
> Thanks in advance!
> Andrew.
>
> blazerman wrote:
>> AWN-I'd lean towards the temperature sensor. If you have a scan tool
>> on a cold morning scan it and look at the temperature screen and
>> compare that to the ambient temperature-may cost only your time.(then
>> hopefully a sensor). Keep us posted. Certainly don't know the answer
>> to your problem for sure but at the moment I peresonally had had more
>> issues with this sensor than oil pressure senders. Also doubt fuel is
>> your issue based on what you've wrote but some injector(good quality)
>> may help. in case of a varnished injector. Sounds like your doing the
>> best you can-good luck and keep us posted when you get it so the rest
>> of us will know! snipped-for-privacy@peru-motors.com
>