I'm confused. I think somebody else said it already - lift pump. Check this before moving on, you may be going around in circles.
Rich Blake -----Original Message----- From: Patrick Austin <[email protected]> To: [email protected] <[email protected]>; [email protected] <[email protected]> Date: Tuesday, August 21, 2001 3:53 PM Subject: Re: Running problems again: Still running badly. >Okay... > >a) DPR plugged in, O2 sensor disconnected: Car hesitates badly, won't drive. >b) DPR pluged in, O2 sensor connected, Air Mass Sensor disconnected: Car >hesitates badly, won't drive. >c) DPR unplugged, O2 sensor plugged in, Air Mass sensor plugged in: Car >doesn't hesitate, pulls to redline. > >So, if the O2 sensor were the culprit, I'd expect the car to run OK in >scenario a). Were it the air sensor, I'd expect it to run OK in scenario >b). As it is, it only runs OK in scenario c). Were the transfer pump bad, >I'd expect the car to run just as badly with and without the DPR plugged >in. WTF??? Could it be the TT chip I installed a couple of days ago? It >ran fine just after I installed it, but maybe it's 'learning' a bad habit. >The air intake boot seems fine, as do the major vacuum lines. > >At 04:34 PM 8/19/01 EDT, [email protected] wrote: >>In a message dated 8/18/01 9:19:01 PM US Eastern Standard Time, >[email protected] >>writes: >> >> >> If the >> What >>exactly does the DPR do, and why does it run fine without it hooked up? >> >> >>The DPR is controlled by the o2 sensor, and it riches/leans the mixture >based >> Plug the DPR back in, and disconnect the o2 >> Let us know what happens. >> >>-Dave >>'91 Jetta GTX 16V >>'88 Jetta GLI 16V >>'84 Vanagon > ************** > Patrick Austin > [email protected] > (617)782-9115 > ************** >_____________ >List Sponsor: http://www.netsville.com >To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message >See us on the web at http://www.a2-16v.com >Visit the 16V Homepage at http://www.gti16v.org > _____________ List Sponsor: http://www.netsville.com To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message See us on the web at http://www.a2-16v.com Visit the 16V Homepage at http://www.gti16v.org
