Allpar Forums banner
1 - 5 of 5 Posts

·
Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
·
23,867 Posts
Welcome to Allpar. Although not everything will leave behind a fault code, but are there any stored fault codes?
You want to jump in and check things (spark and fuel) when it is in start/stall mode. Check for spark at a coil pack. See if a shot of carb solvent will keep it running longer.
If you have or can borrow a scan tool, look at the sensor states when cranking. Make sure that cam and crank sensors are 'present', 'active' or 'in sync'.
An erratic security system or SKIM (gray body) key can also cause a start/stall.
Does it seem temperature related?
 

·
Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
·
23,867 Posts
Even with a new fuel pump, I would monitor the fuel pressure with a gauge while it is acting up.
A cheap gauge with a 4' hose can reach the windshield where you can watch it. An adapter can be made up to tie into the fuel rail supply 'quick connect' fitting. Like this one: http://compare.ebay.com/like/110946103155?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar
Make sure that the fuel line fittings are securely latched and that there are no leaks before closing the hood and going for a test drive.
Was the pump and MAP sensor replaced to try and fix this problem? Was the fuel pressure regulator and filter assembly replaced along with the pump? Did replacing them make any difference?
It does sound fuel supply related to me and this is another step in the diagnosis. Anything that you can rule out as being the cause of the problem will lead you to the correct answer.
 

·
Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
·
23,867 Posts
Any explanation why the new fuel pump died so soon? Repeated fuel pump failures can occur from contaminated fuel in the tank. Did the tech take a fuel sample to look for water or other contaminants.
There is no inline filter, there is the pump intake sock and the combination filter/regulator on top and small mesh screens inside the fuel injectors to catch debris.
 

·
Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
·
23,867 Posts
Hopefully debris didn't get as far as the injectors and should have been trapped by a filter upstream. Some garbage may be sitting at the bottom or on the walls of the tank. Sometimes it can be wiped clean with a lint-free rag inside.
I'm not saying that water or debris in the tank definitely killed the last pump, but I would watch and listen to this current pump closely for noises, etc. and hopefully it was just a bad pump.
You could run a bottle of Techron through the fuel system.
 

·
Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
·
23,867 Posts
A whistle may be a vacuum leak. Less likely electronic, although that is possible. Check the rubber hoses for deterioration like hardening, softening, rot or cracks, etc. See if you can duplicate the whistle. Hot? Cold? Idle? In gear? Etc.
All grounds must be clean and secure.
If you pull fuel injectors, be prepared to have to replace the o-rings at their age. You don't want to introduce any fuel or vacuum leaks.
 
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top