Question about 2007 Mazda CX-7

1 Answer

Check engine light is on

The EGR valve was replaced 5 months ago. Since that time I have experienced various electrical problems that seemed to correct themselves after a period of time. The driver side control would not work for the passenger side window. Then the control worked, but the window would not stay in the closed position. Then that problem corrected itself. There are lines in the radio display on the dash board. Now the engine light is one again.

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert who has answered 20 or more questions within one hour.


    An expert who has answered 20 questions.

  • Contributor
  • 38 Answers

Take it back all work has a warranty you should have really taken it back as soon as the problem started explain the situation and tell the you want the job done properly/have you checked the battery lately did they swap it?

Posted on Apr 15, 2014

Testimonial: "I did call the garage the day after they replaced the EGR valve because the heater would beep when I would turn it on or off, which was not happening before. It was probably supposed to, but that was the first I had heard the on/off indicator since I had the car. The manager checked with the mechanic that worked on my car and he said that the battery had run down while he was working on the car and when that happens everything "resets" itself and it takes some time. The battery is only a few years old. The window problem seemed to correct itself, so I didn't worry too much about it after that. Now the check engine light is on again. I appreciate your input and I am going to call the garage and get the car back in."

  • oldholborn Apr 16, 2014

    if the manager has stated the machanic had run the battery down sound like the alternator that drives the belt to charge the battery had died bit confused why they left it and diddnt replace repair then defo take it back and ask them to do an investigation tell them about the battery running down as well beacuse if the car is running the battery should (charge itself) if this wasnt happening they should have inspected it



6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 78 Answers

SOURCE: passenger side window is stuck in the open mode and now the electric mechanism will not work ie I cannot close my window. Many thanks Angie

Your window regulator went out.You must replace it.Its common for the age of the car so dont get mad at Angie

Posted on May 23, 2009

  • 4669 Answers

SOURCE: 94 mazda 2.0 engine 626 won't start.

Have you checked the fuel pressure? It sounds like a bad fuel pump.

Posted on Sep 07, 2009

  • 1 Answer

SOURCE: Passenger window won't work using the driver side control switch

Open the window with the local button and keep the button pressed for 3 seconds after it has fully opened. Then close the window and keep the button pressed for 3 seconds after it has fully closed. This calibrates the position of the window which it lost when you changed the battery. Good luck

Posted on Apr 01, 2010

  • 383 Answers

SOURCE: 2000 mazda 626 check engine light went on . code

probley not egr valve it probley egr control solenoid or wiring

Posted on Apr 11, 2010

  • 14 Answers

SOURCE: Check engine light keeps coming on with a PO403

take battery cable off to let computer reset

Posted on Jun 11, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Replaced egr valve 2 months ago, check engine light came on yesterday code p0104 egr valve 1999 acura tl 77000 miles

that does not mean that the egr is bad maybe its solenoid a electric control or vacuum hose controlling the egr, or an exhaust pipe connect it to it. that code means that egr for some reason is not working the way have to work.

Feb 07, 2011 | Acura TL Cars & Trucks

1 Answer

My car while running down the road will shut down lose all power. After the car site for about 15 minutes it will start up again and run for a few days and this will happen again. Before it shuts down the...

Sounds like an EGR valve sticking. Start the engine cold and let it warm up. As soon as it starts to hesitate/stumble, pull the vacuum hose off the EGR and if the engine maintains a steady idle, replace the EGR valve. The EGR is sticking intermittently but it won't be long before it sticks all the time and you won't be able to keep the car running when it gets warm. This is an easy diagnosis, removal and replacement for the do it yourself car owners. Please rate me on my answer.

Jun 30, 2010 | 1995 Jeep Grand Cherokee

1 Answer

Truck not firing properly front coil pack not firing at all.

if this truck has an o2 sensor i would replace that and also make sure the cat-converter is not plugged,this would give you your powerloss and egr code,next is your coil,this may be caused by the computer or your crank sensor,look at the tone ring that the crank sensor uses and make sure its not missing teeth or broken,also check all your fuses.

Jun 12, 2010 | 1994 Ford Ranger Supercab

1 Answer

1989 camaro engine

Here is a link for you to check the DTC code to see what issues your engine management has detected. I am going to suspect the EGR valve may be stuck open, that's why your having most of the problem you have described. Good luck and keep me posted and check or replace the EGR valve, the car is too old to just clean out the EGR valve.

Dec 03, 2009 | Chevrolet Camaro Cars & Trucks

1 Answer

Experiencing various electrical problems

The most common cause of intermittent problems is a poor ground connection.Check the engine and the chassis grounds for tightness and clean surfaces.

Oct 31, 2009 | 1994 Volvo 940

1 Answer

Fuel Injector prob?

check your EGR valve a plugged up or not working will make it seem like its the injectors.

Jul 30, 2009 | 2003 Mitsubishi Galant

1 Answer

1998 ford escort lx service engine light is on.

check inside the egr port on the intake for carbon build up.if so clean it out with a piece clothes wire.then vacuum up debri with shop vac.

May 16, 2009 | 1998 Ford Escort

Not finding what you are looking for?
2007 Mazda CX-7 Logo

80 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mazda Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

Are you a Mazda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides