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Old 01-06-2013, 07:31 PM   #9
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Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

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Fuel pump, even if just changed. Somebody screwed up. The right hand turn describes it perfectly and nothing else on car will act like that.

The pump is a module, in short, a cup that holds maybe close to a quart of fuel right around the pump inlet to let car stay running when fuel is sloshing around everywhere but the correct spot as fuel runs low in tank. The pump refills the cup on the run as part of the output is bypassed, when pump efficiency drops off after it cannot pull in fuel fast enough because filter is clogged, then the cup itself starts running dry, it just happens to show up turning right first. Eventually it will get worse and worse, to finally stalling with no re-startup after simply turning right slowly out into street from say parking lot.

Modern in tank fuel pumps work great but burn up quickly if they are allowed to run dry intermittently like when tank fuel level gets low. The cure was to put pump in a module that very rarely runs dry if working as designed. The reason why now all owner's manuals stress to never run out of fuel, it can damage the pump, they are fuel cooled. Running ethanol in fuel made for many new problems though, it carries garbage that commonly clogs in-tank filters, especially on earlier models of these.
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