Re: How do I clean the EGR passages on a 2001 v6 Mustang.
Disconnect the egy tube ftom the intake manifold/throttle body. clean the upening on yhrottle body and yube with either carburator or brake cleaner and a wire brush. Pretty simple, really nothing to it.
Hi Bobby, I found this bulletin on I believe the problem you are talking about. Hopes this helps ya put.. Cobra.. Please read..
FORD:
1999-2004 Mustang
ISSUE:
Some 1999-2004 Mustang vehicles equipped with a T5, T45 or TR3650 manual
transmission, may exhibit a hard to shift condition into first or reverse gears
from a stop. This may be due to an incomplete disengagement of the clutch (lack
of clutch pedal reserve). ACTION:
Refer to the following Service Procedure. It may be necessary to adjust the
clutch pedal down-stop and the clutch pedal shaft nut to gain full pedal
travel. SERVICE PROCEDURE
Lift up on the clutch pedal to reset it.
Measure the clutch reserve per the instructions listed in the Workshop
Manual Section 308-00, Diagnosis and Testing, Manual Transmission and Clutch.
NOTE:
THE MINIMUM RESERVE NEEDED FOR GT, LX AND 1999-2001 COBRA IS 19 MM
(3/4").
If the measurement obtained is larger than these values, DO NOT CONTINUE
WITH THIS TSB. Follow normal Workshop Manual diagnostics listed in Section
308-03.
If the measurement obtained is less than these values, make sure that the
floor mat or excessive material under the carpet is not preventing the pedal
from reaching its full travel. Correct any obstruction, if the condition is
corrected return the vehicle to the customer. If the condition is not corrected
proceed to Step 3.
Visually examine the pedal down-stop to see if it is preventing the pedal
from reaching its full travel to the carpet. Correct if necessary by removing
the rubber pad on the down-stop. If the condition is corrected return the
vehicle to the customer. If the condition is not corrected proceed to Step 4.
Additional travel can be obtained by loosening the clutch pedal shaft nut
and adjusting as needed per Section 308-00 of the Workshop Manual. If the
condition is corrected return the vehicle to the customer. If the condition is
not corrected proceed to Step 5.
If inadequate reserve is still present refer to Workshop Manual Section
308-00 for clutch pressure plate and disc diagnostics
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You may have a EGR valve plugged exhaust gas passage, so when it is opened the systems computer doesn't see any change in the O2 signal voltage. To check this manually pull open the EGR valve, the engine should run very rough and will stall out most times, if you open the valve up and see no change in the engine idle the passages are plugged with carbon and must be cleaned. As long as you have this EGR problem the car will not pass smog.
V6? 4cyl? what is the code? there is no code that says "replace egr valve", the passages may be stopped up. open the egr valve manually (a scanner may be able to do thiis) and see if the engine idles rough or stalls out (it should if passages are flowing) if not you need to take valve off and clean the EGR passages. If you cant open the valve, take it off, one hole is exhaust. the other will be vaccuum, from the intake manifold. A bad map sensor could also cause a egr malfunction code.
TRY CLEANING EGR INTAKE OR EXHAUST MANIFOLD PASSAGES.BECAUSE PASSAGES IS RESTRICTED WITH CARBON BUILD UP.IF PASSAGES NOT RESTRICTED.PROBLEM COULD BE WIRING OR ELECTRICAL OR VACUUM NOT GETTING TO EGR VALVE.OR THE PCM IS FAULTY.
I believe this code is insufficient EGR flow. On this engine, the passages to the EGR valve often become carboned up and cause this code. Remove the EGR valve and inspect the passages to see if they need to be cleaned.
The problem with the Warning system for the EGR is it usually blames insufficient flow to the sensors that measure the flow.
What is really happening is the intake manifold is clogging under the airhorn mount. The airhorn has a butterfly flap on it and mounts where the carburetors use to be. The EGR gets its flow from passages beneath the airhorn. You need to clean the passages to the EGR. Then remove the battery cable for 10 minutes to clear the old codes. The check engine code should go away when the manifold is clean.
Check the EGR tubes for carbon build up. It's not the fact that the EGR valve keeps going bad, the reason that there it thinks it's malfunctioning is the tubes itself will not allow enough flow. Remove them and clean them out the best you can.
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