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EGR (Exhaust Gas Recirculation)

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Question

strange maybe pressure release sound from right rear sounds like on inside

Hello, thanks for writing in about your Dodge Grand Caravan. From what you've described, the noise is most likely from the A/C system being low on refrigerant. If you decide to get this fixed, have a certified technician, like one...

Question

stalls when put in gear

The idle control valve may be stuck or you have a vacuum leak. Try to disconnect the vacuum lines to the EGR valve to see if it still stalls. This may be due to problems in the vacuum system. Try...

Question

Head gasket or not?

If it is confirmed (i.e., no false positive) that exhaust gas is present in the coolant, that means one of three things: the head gasket is leaking, the head has a crack in it (not unusual) or the block is...

Question

Car keeps dying

There are usually two different issues that cause the engine to stall or reduce RPM in situations like this. The first thing I'd look at is the idle control valve or sensors that monitor the fuel system. The second item...

Question

Car keep shutting off.

Hi there. Check the Idle Air Control valve and see if it is plugged or not working. The IAC valve controls the engine idle and when the vehicle is at a stop the idle can drop and cause the engine...

Question

99 nissan altima jerking and cuts off but no check engine light

You may be having an issue with the EGR control solenoid sticking or not venting the EGR system and causing the problem. I would suggest to disconnect the solenoid and road test to see if problem goes away? If it...

Question

P0401 keeps coming on, already done, cleaned carbon, egr replace, egr tube, pigtail harness.

Claimed by Kevin Gainer

Question

clear/replace EGR valve

Hello, thank you for writing in. For exact specifications on tools needed and a step by step procedure, you will need to access a service manual for the vehicle. Typically you would expect to use a 12 mm socket or...

Question

Help figuring out what hose i need for 2003 Ford focus

Hello, thank you for writing in. Unfortunately, the picture you tried to add did not come through. If you are trying to find a particular part, you will want to determine what it does first. Since you are dealing with...

Question

My Ford f150 has a misfire on #4and#7 I checked the coils and plugs but they seem to be firing what else do I need to do

In order to isolate the cause of the misfire you will need to do an engine compression and leakdown test to make sure the compression is good and no valves are burned. If compression test is good on all cylinders...

Question

96 Honda accord lx, 2.2 I have replaced dist, plugs and wires, main fuel pump relay. Injectors are spitting gas, i have fire b

Check to see if any diagnostic trouble codes have been stored. If the engine runs (actually "runs", even momentarily, as opposed to stumbles) when you directly introduce fuel, that means there is something wrong with either the fuel system and/or...

Question

Why would my check engine light continue to come on after replacing the EGR valve in my 2004 Chevrolet Impala

Hello. I would need to know which EGR code you are getting in order to be able to precisely tell you what may be going on. Most of the time if replacing the EGR valve does not solve the problem...

Question

2005 Chrysler 300c has a code P0406. I believe EGR needs replacing, Don't know if it will make it 25 miles to dealer.

P0406 involves the EGR system but that may or may not be the only factor causing your rough running condition. Typically, P0406 will set if you have a failed EGR valve, excessive carbon buildup, an open or short in the...

Question

1998 Mazda protege: Had the EGR valve replaced, cleared the computer codes, still get the check engine light then a EGR problem co

Code P0400 does not necessarily mean that there is something wrong with the EGR valve itself. The only way to condemn the EGR valve is to directly test it. In particular Code P0400 includes a circumstance where the EGR passages...

Question

My car jerk's some times one week is good and the other week is bad.

Either the EGR - Exhaust Gas Recirculation - has been plugged up or the MAF - Mass Air Flow - sensor is dirty or damaged. Try removing the vacuum line to the EGR and test driving the vehicle with the...

Question

I got a 1999 Ford Windstar LX. It is jerking when I go over 45 or 50.

Hi there. Either the EGR - Exhaust Gas Recirculation - has been plugged up or the MAF - Mass Air Flow - sensor is dirty or damaged. Try removing the vacuum line to the EGR and test driving the vehicle...

Question

Have code P0174, did smoke test smoke comes out EGR valve. Does that mean it's bad? 2004 Ford Ranger

Hi there - smoke coming out of the EGR valve simply means the valve is either leaking, or stuck in the "open" position. The P0174 code indicates a "lean" condition too much air/not enough fuel on the bank of cylinders...

Question

Why is it still misfiring?

Hi there. Check the Exhaust Gas Recirculation valve on the engine. It seems to be sticking on when the engine is running at low idle and causing a misfire as the old exhaust that is burnt is reentering the engine....

Question

Egr valve insufficient flow

Insufficient EGR flow is probably not the cause of the rough or low idle and thus is just a coincidental fault. You should repair it and perhaps first, just to be absolutely sure, but rough idle is more likely due...

Question

Difference between egr valve and egr valve pressure sensor

Hello, thank you for writing in. The EGR valve (exhaust gas recirculation valve) takes exhaust emissions and recirculates it back into the air intake as to lower toxic emission levels. The EGR valve itself is pressure regulated, and needs some...