TMM Mobile Vehicle Repairs 07989 747065

EGR valve problems and replacement

Lumpy idle, flat spots, black smoke or limp mode? We test the EGR valve and the sensors around it, and fix what is actually wrong, at your home or work.

Call 07989 747065Get a quote
A silver car with its bonnet up in a workshop

The EGR (exhaust gas recirculation) valve feeds a little exhaust gas back into the engine to cut emissions. Over time it clogs with carbon, sticks open or shut, or its motor or position sensor fails.

Diesels suffer most, especially cars that do lots of short journeys, but many petrol engines have one too. We read the EGR data with dealer-level Autel and Snap-On diagnostics, test the valve, and fix or replace it on your driveway or at work.

Signs of an EGR valve problem

Why EGR valves fail

  • Short journeys

    The engine rarely gets hot enough for long enough to keep the valve clean.

  • Carbon build-up

    Soot and oil vapour bake onto the valve until it sticks.

  • Electrical faults

    The valve’s motor or its position sensor can fail on their own.

  • Wear

    Like any moving part, the valve and its seals wear with age and mileage.

Repair or replace?

A valve that is clogged but otherwise healthy can sometimes be cleaned and refitted. If it is worn, or the motor or position sensor has failed, it needs replacing, and on some cars the new valve then has to be set up with diagnostic equipment. We test it first and tell you which you need, with a clear quote, before any work starts.

DPF light on too?

A sticking EGR valve adds soot to the exhaust, which can block the diesel particulate filter. If your DPF light is on as well, read about DPF problems.

EGR valve questions

All questions

How much does a typical repair cost?

Without the overheads of a fixed garage, our labour rates are usually lower than main dealers and many local workshops. Prices depend on the job, the make and the parts needed, but you always get a clear quote before any work starts, and servicing is fixed-price. There are no hidden call-out fees within our normal area, and we will tell you if a repair would not be worth it compared with what the car is worth.

Can I drive with a faulty EGR valve?

Usually for a short while, but get it looked at soon. A valve stuck open or shut makes the engine run poorly, can put it into limp mode and, on a diesel, adds soot that can block the DPF, which is a much bigger bill.

Can the EGR valve just be blanked off?

No. Removing or blanking off emissions equipment on a road car is against the law and can fail the MOT. The fix is to repair or replace the valve, so the engine runs the way the manufacturer designed it.

EGR valve problems fixed across the North West

We test and fix EGR valves at home and at work in all of these towns.

All areas we cover

Book an EGR valve check

Tell us which lights are on, what the car is doing and where it is parked. We will get back to you with a price and our earliest time.

Some evening and Saturday appointments available at no extra labour charge.

For example: engine light came on this morning and it feels down on power.
A photo of the warning light or the damage helps us give you a closer price.

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