Question about 1990 Ford Econoline
Fuel gauge problems
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Posted on Jan 02, 2017
The "inertia switch" which shuts off fuel to the engine in the event of a collision or jolt on a 1991 through 1996 models, as well as on 1998 coupes, is located in the rear of the vehicle, near the right (passenger's side) strut tower. On sedan and coupe models, open the trunk and remove the right-sided trim panel. On sedan and coupe models, open the trunk and remove the right-side trim panel. On hatchback and wagon models, there may be an access door secured by clips. On some models you may need to remove the lower quarter trim panel on the right side, however it is easier to cut an access hole directly above the switch.
Posted on Dec 04, 2008
SOURCE: Fuel gauge not working
Normally I'd say the float/sending unit in the gas tank is the culprit, however the fact that your service engine light is involved requires further investigation, You need to hook up an obd2 reader to the interface mounted under your dashboard and see what it has to say, there might be a simple error code preventing your gauge from functioning. Many auto parts stores will do this for you for free...
Posted on Apr 13, 2009
Theres 2 pumps one in the tank, lift pump, and one in the chassis rail under the driver side. The one in the tank is cheap, the one in the rail is not. The one in the tank only produces low pressure to prime the main pump and if it is broken, may not cause that much of an issue except when starting. the one in the rail is a no-start if it fails. The idea is that the rail pump can supply high pressure for the injectors, so a fuel pressure test at the injector rail will determine which pump is playing up. Hope that helps Tim
Posted on May 26, 2010
The fuel pump inertia switch that shuts off the pump in the case of an accident or impact is located under the right side of dash I have also
found them behind the right kick panel. There is also a fuel pump
shutoff relay under the hood on the left firewall, and a relay on the
right fender apron behind a plastic cover. Hope this helps.
Posted on Jul 07, 2010
I have a 1989 E350 that had the same problem. I finally found that I had corroded connectors under the hood. There was a group of 5 connectors behind the air cleaner housing under the hood. Two of them had hot wires that feed the computer and the injectors. Repaird these and the van starts right up. Hope this helps.
Posted on Sep 26, 2010
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