Jack up the passengers side of the car, get a 1 1/16" wrench break loose the fitting to the manifold, hold a 24 mm wrench on the fitting to the manifold, loosen the flare nut on the tube. Then using a 10 mm socket, about 2 inches long, loosen the two nuts under the EGR valve, then take the both out, remove the vacuum hose to the top of the EGR valve, and the sensing line from the small tube. then completely remove the flare nut from the orifice fitting on the manifold. BE CAREFUL with the tube, do not bend it or break it, you may find PB blaster useful the night before on a cold engine loosen these fittings. Once the EGR valve is out, remove the orifice out of the manifold, remove the tube from the EGR valve, again be careful, mark the tube to EGR position before pulling this off, because the top fitting to EGR needs tightened before you put it back in, it will make the lower fitting difficult if you do not line it up right, dry fitting from under the car is helpful, mark it, and then tighten the top. Clean out the tube, be careful not to bend the little tube, either inside or outside the larger tube, it sticks out inside. Clean the orifice, clean the manifold face carefully not to score it, check for blockage there too. Apply antisieze to the orifice, put it back in the manifold, then apply antisieze to the bolts for the egr valve, and the flare nuts both ends. Apply some silicon to the egr valve face, just enough to hold the gasket in place, put the new gasket on, start the bolts two turns in the gasket, it will hold them in place, then start them in the manifold, then start the lower flare fitting to orifice, tighten the top bolts, and then the flare nut, connect the vacuum line, connect the sensing line. I just recently did this process, it works, if have other EGR issues, the valve is the easiest.
how to change a valve cover gasket on a 97 mercury grand marquis ?
ask a car dealer
where is the heater control valve
location of heater control valve on 2005 mercury marguis ?
Behind the intake plenum.
Yes, a person can get a diagram of the PCV valve location in a 1989-1999 Mercury Grand Marquis. This diagram would be located in the maintenance books found in auto part stores.
YES , a 1990 Mercury Grand Marquis 5.0 liter V8 engine has a PCV valve ( Motorcraft part number EV-98-B ) going into the intake manifold
Try adjusting the modulator valve
should be drivers side, near valve cover.
Inside the truck on the driver's side.
passenger side fender wall,it should have two hoses connected to it
Vacuum check valves are usually located close to the vacuum source.
i do beleve it should be in frunt of valve covers both sides. if not just flow the spark plug wiers from moter
Likely the fuel filter is clogged so you need to change it. If you can keep the engine running by pumping throttle a few times at start up, and then it runs, check the filter; cost about $10.00. On My 1999 Mercury Grand Marquis I had to replace the Idle air control valve because it did stay running until it was warm
sorry that's a aod transmission they don't have modulators.the shift is controled by the kickdown cable
If there is a PVC valve and hose and filter connected to the air intake, oil could be sucked up from the valve covers when the throttle is applied. perhaps the PVC valve needs to be changed.
Replace your IAC Valve-No more stalling
On a 1996 Mercury Grand Marquis : The fuel pump shut off switch ( inertia switch ) is in the trunk , behind the trunk liner on the drivers side of the trunk , near the drivers side rear tail light ( there is an access hole )
Have the high pressure valve checked.
check your air idle control valve
check your idle air control valve
This year had a central fuel injection with the idle speed on the side of the throttle body in the form of a D.C. motor with mechanical adjustments.
This transmission is not electronic, its is operated via a throttle valve control cable running from the throttle body to the transmission bell crank.