location fuel filter on 1990 grand marq?

Hi!

Total newb in car repair. Where, in relation to a wheel, a door, some landmark, is the fuel filter?

Haynes/Chilton happily photograph just the filter, with no context. I simply have no idea where it is!


thanks!
-Bernard

 

Do you have a factory shop manual? We told you to get one when you bought the car. I see you mentioning the Chilton, Haynes books in your posts but never referring to the FSM.

 

If its a Fuel Injected engine, it might be an Electric Fuel Pump, with the filter before the pump. If it is a regular, carburetted engine, it should be near or on the carburetor. The EFI type pump can be in the Fuel Tank, and if so, the filter would be close to the injectors' fuel entry.

Why not check AutoZone's Repair Guides? Might give you answers to the other issues as well.

http://www.autozone.com/autozone/

 

It's fuel injected; where do the injectors enter?

Heh: ordered the shop manuals a month ago via ebay, but it's been a while since I used ebay, and I accidentally had them shipped to my old college dorm! They arrived there on June 1st and 7th respectively. One of the kids there now is going to get them shipped back to me, but that won't happen this weekend, and I need to get this car to pass inspection before a week is up

 

Take a trip to your local library (search their online catalog first) and see if they have a manual (Motors manual or the big Chilton garage manuals) for the car. There's a module under the hood after the fuel line that regulates the flow to each injector. The filter should be around there.

 

Mustangs of that year with the 302 had the fuel filter in front of the gas tank. May want to check there. If you are going to change it...BE CAREFUL...it is under pressure and when loosened it will spray gas in your eyes, etc.

 

I was wondering about that:
Do I just wear glasses, which is easier,

Or do I have to find the fuel switch somewhere in the "trunk" (according to the manual-- under the plastic sides I presume), and run the engine until it's dry?

 

There should be an inertia switch somewhere in the rear. I don't know where it is on your car....this is just ONE reason you need the FSM....but even then you will get gas all over. Be prepared for that. Should be some clips on the hoses you will need too...they MAY come with the new filter. Or may not.

 

OK, so I don't really need to find the inertia switch? It won't make much of a difference?

New clips did come with the new filter, I checked

 

It WILL make a difference. It will relieve some of the pressure but you will still have gas that has collected in there that will seek the opening. If you have goggles, use them....if not, just be careful. And, no joke, keep your moth closed. A lot depends on the position you are in and if you have the car on a hoist or not. It's not rocket science....just be cautious. And don't light up while performing this job.

 

my 89 crown vic and 1985 mercury marc both had there EFI fuel pump and filter right there, where the lower control arm and the frame connects. is the same place if extra muffler would be if there was dual exhaust.

 

found it!
Now, where on earth would that pressure switch be....?

Working on the water pump right now, but will get to this tomorrow.

 

fuel switch in the "trunk.
it usually on the tire wheel wall, where the trunk lid hinge and bracket meet.

 

Not that I am suggesting you do it, and I agree with all of the warnings posted, but I have never bothered to depressurize the fuel system and I've never had fuel spray out at me when I serviced the fuel filter. I usually just keep a large butter dish near by to catch the fuel that dribbles out of the line and the filter when I take it off.

Another option is to take the cap off of the Schrader valve on the fuel rail put a large rag over the valve and depress the plunger on the valve. I've never tried this method, but it bleeds all of the pressure off the rail. You need to be careful with this though as fuel will shoot out of the valve at 35psi initially (depending on how long the car has been sitting).

By far the safest option is to trip the inertia switch and run it dry.

 

The inertia switch is inside the rear glove compartment on your Merc. Open the glove box up and it should be bolted to the back of the glove compartment. To remove as much fuel as possible, start the car and then give the inertia switch a smack.