1994 Mercury Grand Marquis, Fixing Up a Used Panther : part 4 Injectors and EGR


2023, November 14

part 1 - part 2 - part 3 - part 4 - part 5 - part 6 - part 7 - part 8

ok back to the program

The old O-Rings can be a bit hard, don't try to worm them off the nozzle end with the pick as you could break the brown cover, just lift and snip with cutters.

Cleaned and ready for new black O-rings.

Lube the O-rings with petroleum jelly and install them. Then install the injectors in the manifold.

Install the fuel rails and torque down.

Drape the main harness back over the intake.

Install the throttle cable assembly (part of it goes under the harness retainer boss)

Torque that down.

This is interesting, it appears Ford puts both connectors for both dash coolant gauges (analog and digital). So in this case with digital dash the single wire dangles freely and if the standard analog dash, then I imagine the dual connector above dangles freely.

EGR valve next, those two bolts back there is the ticket for this. Don't forget about a new gasket.

I wanted to show this bit before the throttle body is on, otherwise it'll be hard to see. but that silicone hose connects the nipple on the EGR pipe to the pressure sensor. All this is crammed behind the throttle body and against the firewall.

New gasket.

Installed.

Don't forget to tighten the nut to the exhaust manifold, it's easier to get to from the bottom. I said easier, not easy

I am showing this now as it's impossible to see when the throttle body is on. But this goes on after the throttle body as it covers up the front bolts holding the throttle body down.

OK, had a blonde moment, this hose goes on next, it's the idle air solenoid intake and connects to the large nipple behind the intake and the elbow comes out just in front of the throttle body opening atop. I had made the mistake of forgetting this piece so I had to remove the throttle body to put it in. Don't do a me here.

Since one of the DTC's (Check Engine lamp) was EGR pressure sensor voltage out of range I replaced this sensor with a new one.

Install the hose onto the sensor now with clamp. Believe me it's darn near impossible when the throttle body is on.

Next is this vacuum hose, the red end (left) goes to the fuel pressure regulator on the fuel rail, the large middle fitting attaches to the drivers side throttle body vacuum port, the double fitting on the right attaches to the electric vacuum regulator valve next and above the EGR and the little green hose attaches to the EGR valve.

Snake it in place...

Connected on this side.

Click here to continue to part 5