EGR Valve Location 2002 Ford Escort?

[peking]

Hi Guys,

Can anyone please tell me the exact location of this thing? I hooked up my scanner to my brother-in-law's Escort and it gave me a code that the EGR valve needed to be checked/replaced. I'm thinking about cleaning it first and if that doesn't work, replacing it.

thanks in advance!

 

[ekrampitzjr]

I assume your brother has the sedan, not the ZX2 coupe that came with the ZETEC DOHC engine.

On my old '97 wagon, which used the same 2.0 SOHC engine as the '02 sedan, the EGR valve is tucked behind the throttle body toward the firewall. It should be reasonably visible. I doubt the differences are significant, as Ford made few changes to the Escort after 1997. The '97 was the first year for that style (sedan/wagon), and your BIL's is the final year for the sedan ('99 for the wagon).

A small pipe runs from the exhaust manifold area in front around to the valve. You will probably have to remove the air intake plenum to the throttle body. The EGR valve should be fairly cheap as these things go, so I'd just replace it and keep going.

I had that old Escort for 313K miles but never really had to mess with the EGR system. When I did attempt to clean it, there was never anything to clean out. No telling why it malfunctioned in your BIL's.

 

[peking]

Yes, it's the 4 door sedan with the SOHC engine. I'll try looking for it after I get off work.

thanks

 

[peking]

ekrampitzjr, forgot to ask this earlier, do you know how to turn off the "Service Engine" light? BTW, is this different than a "Check Engine" light? He never got an owners manual when he bought it used a few years ago. I changed his oil and spark plugs this past weekend.

thanks again

 

[ekrampitzjr]

"Service Engine Soon" = "Check Engine". Same thing.

On my '97, disconnecting the battery for about a minute would reset the light. Just a guess, but this will probably work on the '02 as well. If the SES light comes back on after doing this, then the car has a legitimate problem that requires servicing, as it still detects a fault after the reset.

Sounds as if this Escort has not been particularly well maintained. This is not necessarily your BIL's fault, as the '01-'02 sedans were fleet-only cars and he probably bought it from some rental car agency that had iffy maintenance. Then there's customer abuse...

When cared for properly, these are good cars. I didn't start to have serious issues with my wagon until I had 200K miles, and I drove it reliably for another 60K after that before it started having major breakdowns every spring and finally blew its engine at 313K. Heads, specifically valve seat inserts, are a real weak spot with these engines.

 

[peking]

ekrampitzjr, thanks for your expertise on the Escort!

Funny thing is, it has a OBDII hookup and I got the code off that. I can reset it with my Scan Gauge. Last question, ever had a problem w/ the Mass Airflow Sensor? I got a code for that too (P0100 - Mass Air Flow (MAF) Circuit Malfunction).

thanks again

 

[ekrampitzjr]

Had to replace it on mine just before 200K. But if you're getting a circuit malfunction code, which is not the same thing as a faulty MAF sensor code, you might want to check to see if the wires are intact and connected properly. You might just have a loose connector. Look at the easy stuff first.

The MAF sensor is inside the big housing that the air filter housing attaches to and the twisted air plenum to the throttle body exits. To replace it involves removing it from that housing. I paid nearly $200 for a replacement MAF sensor meeting the emissions calibration code from a Ford dealer, and that was a few years back. In your case, I'd be tempted to poke around a salvage yard and get the whole housing including the sensor if it turns out you need the sensor itself. Or even check eBay.

 

[shoz123]

There is no PO100. A PO102 and PO103 are for the MAF. The first no voltage coming back the second too high of voltage.

PO 1000 is the drive cycle has not been completed after clearing the PCM memory.

Common EGR codes are for the DPFE sensor. This is sitting on top of the tube, connected with two short silicone hoses, that goes from the manifold to the EGR valve itself.

The valves themselves seldom go bad though sometimes the passageway in the intake will coke up and stop or restrict flow.

 

[punisher]

Just a quickie: FoMoCo EGR systems are fairly easy to diag. A code for "DPFE/PFE out of range, or voltage high or voltage low" is 99% a bad sensor, which is very common. A code for "insufficient EGR flow" is clogged EGR ports, or the valve is inop/clogged. Apply vac (at least 5") to the valve while the engine is idling, if it stumbles/dies with the EGR valve open, your valve and ports are OK and you can look elsewhere for a problem. A code for "excessive EGR flow" is usually a bad DPFE, and on rare occasions a bad EVR, or a clogged EVR filter (more common in very dusty climates). Thats about it for Ford EGR systems on later models.