How to test an electronic EGR valve (GM P1406 case study)
For more on Engine Performance Diagnostics go to my website at
In this video I show another variable when it come to testing this type of
EGR valve. This video can also be used to support Sections 3 and 7 in my
How to Clean your EGR Valve
This Episode we remove the EGR valve, give it a well deserved clean, and
then refit it, to prevent it seizing up.
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Dumb Things NOT To Do To Your Car
Scotty Kilmer, mechanic for the last 46 years, shows some of the dumb
things he's seen people do to their cars. And, If you like my car help, be
sure to watch my live car talk show every Saturday morning at 10 AM CST on
YouTube. I answer your car questions LIVE there. Just check it out at
eature=c4-overview . And remember, every TUESDAY I upload a new video, so
don't miss them.
P0401 EGR Valve Port Cleaning
This is my DIY for clearing the CEL code P0401 (EGR Insufficient Flow) on a
98 Honda Prelude.
In cars with OBD2 if the EGR valve is restricted by carbon deposits it will
detect that and throw a CEL. To get rid of that CEL you must clean out the
carbon to allow flow.
After combustion occurs within the engine it creates Exhaust. Gas from the Exhaust straight from the engine is very bad for
the air. The EGR valve recaptures that Exhaust and runs it through the combustion
process again, which lowers the temperature of the fumes (Exhaust gas) and lowers the amount of pollution
exiting into the atmosphere.
If you don't fix it you won't pass SMOG in California. You may experience
rough idling and poor acceleration.
Get your "EGR port plugs" from Honda. They will have it.
Removing the injectors are important to allow clearance to the port plugs.
When you pull out the injectors you might as well clean them since they are
Slide hammers make pulling the port plugs out easily.
Drill with a bit the size of your tap. Drilling halfway through the port
plug to should be enough distance to fully grab the port with the slide
If after you clean your ports and valve the CEL has not been cleared, you
EGR valve maybe faulty and needs to be replaced.
EGR Code P0401 DONT REPLACE EGR
I see it all the time. Someone gets a check engine light. To save money
they take the car to aurozone or read the codes with a code reader. The
code description is for a flow problem with the EGR. They replace EGR and
the light comes back on.
Any EGR trouble code relating to LOW FLOW or NO FLOW does not indicate a
bad EGR. The code relates to flow from the EGR to the intake. Remove EGR
and throttlebody and clean the ports with intake cleaner and a scribe or
snake. Also check for leaking gaskets or lines but usualy the system is
just CLOGGED with hard carbon. Remove clog and flow will return and your
light will not come back on.
How To Clean The EGR Valve On A GMC Safari Vortec V6 Engine
Here is how to clean the EGR (Exhaust
gas recirculation) valve on a GMC Safari Vortec V6 engine. If your engine
started running really rough all of a sudden, your EGR valve may be stuck
open. It's easy to remove and clean up. It is a good idea to install an
EGR valve gasket with a filter in it to prevent future carbon buildup.
Here is a link to a video I made showing the gasket:
No Crank, No Start Diagnosis - EricTheCarGuy
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Whenever you have a no start condition when attempting to start your
vehicle it's important to make the distinction between "no crank, no start"
and "crank, no start" situations as they are treated differently. This
video covers what I do when confronted with a 'no crank, no start'
situation and in this case it's a worst case scenario so be sure to watch
till the end.
Starter diagnosis video
No start basics video
Parasitic draw video
Click below and Stay Dirty
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How to Seafoam your vehicle (Also called Top Engine Clean)
This is a carbon deposit cleaner that when used can help eliminate the
carbon deposits that build up in the top end of your engine block. I
perform this about every 15,000 miles on my own vehicle.
Steps to seafoaming:
1. Bring your vehicle up to normal operation temperature
2. Separate seafoam canister into 3 equal parts (one will be for sucking
through a pvc line or brakeBooster
line, one for gas tank, and one for putting in the oil filler cap)
3. Locate the PVC valve that runs through the intake manifold, for this is
where you will initially suck 1/3 of the seafoam canister through.
(If PVC is non accessible then you can use your brake Booster line in the same manner.)
4. Once engine is at normal operational temperature, have another person
sit in the drive seat and bring the engine RPM up to around 1500.
5. Pull your PVC off (or brake Booster line) and start slowly sucking 1/3 of
the seafoam in through either of these locations. Be cautious & steady
handed, you don't want to stall the engine out.
6. Once you've sucked all of the 1/3 portion up turn the engine off &
replace pvc or brake Booster to its
7. Once engine is off, unscrew your Oil Filler cap & pour 1/3 of the
seafoam in as if it were oil.
8. Unscrew gas cap and put the remaining 1/3 seafoam in.
9. Leave the car alone for 15 minutes.
10. Come back to the car and start it up, let it idle for about 10-15
seconds and then BRING ENGINE RPMS TO A STEADY 2000-3000RPM for no more
than a couple minutes.
(major revving or fluctuation can knock carbon deposits loose so please
keep a steady foot)
11. Once this is complete, take your car for a 10-15 mile drive, while
doing so make sure to bring the engine through its total rev band spectrum
to make sure all the carbon deposits have been cleaned out.
12. Once the drive is complete, bring the car back home.
13. CHANGE YOUR OIL & FILTER & SPARKPLUGS WITH KNOWN GOOD OEM SPEC PARTS.
(The reasoning behind this is that the seafoam lowers the viscosity of your
oil, thus weakening its ability to control wear on your engines major
mating surfaces and your plugs get buggered up with carbon after this
tuneup due to the carbon coming loose during the tuneup.. So an Oil/Filter
change & Spark Plugs are a must after seafoaming is complete
14. Tune Up is complete!
How to clean a throttle body and Idle air control valve (iac)
*** PLEASE READ ***
In this video demonstration, I show how to get to, remove, clean, and
replace the throttle body and idle air control motor (aka IAC) on a 4.2l
ford motor. This procedure is the same for any fuel injected vehicle.
* * * Check out my website krkvideos.com * * *
The vans require removal of alot more stuff just to access the throttle
A dirty IAC can cause a rough idle. A dirty throttle body can harm
performance and cause rough engine operation.
When the throttle body or iac is removed a new gasket must be used to
properly seal the connection to the intake.
GM idle air motors are generally mounted on the throttle body and can be
cleaned without removal from the throttle body. This means one less gasket
and a lesser chance of creating a vacuum leak.
The ford throttle body had a note on it that said it was not to be cleaned
because the coating on the throttle blade might be damaged. Thats fine for
a new car but that has to be disregarded when working on something that has
some miles on it.
Subscribe to my channel.
* * * Definitions: * * *
MAF - Mass Air Flow sensor - Monitors the amount of air the engine is
IAT - Intake Air Temperature - Measures the temperature of the air the
engine is intaking.
IAC - Idle air control - Controls the amount of air the engine is intaking
while it is idling.
Throttle body - Responsible for regulating flow of air into the engine as
you press the gas pedal.
TPS - Throttle position sensor - Tells the computer how far you are opening
the blade in the throttle body so it can add more fuel to compensate the
* * * Visit krkvideos.com for more! * * *
* * * Visit krkvideos.com for more! * * *
* * * Visit krkvideos.com for more! * * *
Ford Focus 1.8 TDDI EGR Cleaning
Ford Focus 1.8 tddi EGR Cleaning with "Wynn's egr cleaning spray"
!!! The black smoke in the end is due to the fact that the guy sprayed with
the engine turned off and this was a mistake from him !!!