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Plugged EGR passage which restricts the flow of exhaust gasses, faulty EGR solenoid, faulty EGR solenoid wiring/harness, vacuum lines damaged or disconnected to the EGR valve solenoid or to the EGR valve, or a faulty EGR valve.
the egr sensor is located on the engine compartment firewall next to the egr solenoid
Take it to a garage.
The 1993 Ford escort did not come with an EGR valve. It is one of a few year models that do not have one.
The EGR valve, on a 2004 Ford F150 5.4 liter engine, is located on the top of the engine near the back. The valve is difficult to identify without prior mechanical knowledge.
You can find the EGR Vacuum Solenoid for a 97 Ford Probe 2.0L at www.autopartswarehouse.com. You can also call them at 1-866-789-3624 or 1-801-214-2997.
what kind of solenoid? The starter solenoid is part of the starter. The EGR solenoid is in the emmisions box on the firewall. The transmission shift solenoids are bolted to the top front of the transmission case
I don't know if it is the same but the EGR valve on my 1977 Ford 302 was underneath the carburetor at the back of a spacer
might be the EGR VALVE insufficient flow
PCV Valve is located on the Right Valve Cover.
1990 -1993 injected Festivas do not have a EGR valve