When does the Mazda6 engine surge to idle?

First, when slowing down (as to a stop light) the engine rpm SOMETIMES doesn’t drop to idle as I approach the light. The engine wants to stay and around 1800 rpm and keep the car going. The brakes stop the car just fine, but the car wants to go. Second, when cruising at around 45 mph, the engine surges from 1800 rpm to 2200 rpm.

What kind of engine does a Mazda 6 have?

I have a 2003 Mazda 6 4-cylinder automatic. A few days ago it started doing a couple of odd things. First, when slowing down (as to a stop light) the engine rpm SOMETIMES doesn’t drop to idle as I approach the light. The engine wants to stay and around 1800 rpm and keep the car going.

Where does the VAC plug go in a Mazda6?

The long end of it goes into the airbox. and judging on what the other guys on there are saying… the short end goes “somewhere” into the intake manifold. when I was looking for vac leaks the other day i noticed mine is also detached…. nobody over there has any clue as to where it plugs in. any one here have an idea? It may just be a vent.

Why does my Mazda 6 surge at idle?

In every gear at any speed (including idle) the car surges. When you apply a little bit of gas, the car acts like somebody is driving it that is just learning how to drive a stick. Ya know, the buck, buck, buck motion. It still pulls pretty well (it just surges while pulling). Searching the 6 forum made me think it might be the PCV valve.

What can I do about my Mazda 6 surging?

If you have a smart phone, now is a great time to buy a Bluetooth OBD II scanner from Ebay (Less than $20) and the app called “torque” and do your electronic diagnosis yourself. I added my responses in ( ). I agree that throwing parts at it isnt the solution. however, the fuel filter COULD be it.

What kind of car is a Mazda 6?

My wifes car is a 2006 Mazda 6 2.3L manual. In every gear at any speed (including idle) the car surges. When you apply a little bit of gas, the car acts like somebody is driving it that is just learning how to drive a stick. Ya know, the buck, buck, buck motion.

What to do about idle surge in Mazda Atenza?

So a second thing to try that is cheap and easy is take a toothbrush and intake cleaner and clean out the throttle body and throttle plate very well and then unhook both battery cables and touch them together. Wayne Crawford : Hold them together for a full minute. This clears the keep alive memory so the idle adaptive strategy can relearn.

Can a bad throttle position sensor cause idle surging?

Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges. 3) Check Engine Light

What causes idle surges on a car ECM?

When does idle surge start on Mazda 6?

When driving the car and coasting in neutral the rpm will drop to 900 and most of the time hold or sometime have a light flicker. Strong surges or drops only seem to happen if I am traveling slowly, less than 15 mph, or stopped. I’m not really sure about how well that statement holds up but will experiment more tomorrow.

What causes a car to slow down while driving?

There can be numerous offenders slowing down your journey. Here are some of the major causes: 1. Dilapidated Spark Plugs The combustion of the engine relies on the spark plugs of the vehicle. Their work is to transmit the electrical signal from the ignition coil to the combustion chamber.

What causes a motorcycle to shut down while driving?

2. Motorcycle suddenly died because spark plug gap is too large. >> Fix: Remove the spark plug and lightly tap on the curved electrodes to narrow the distance between the two electrodes, about half the cup is medium, the distance should not be too close together, too close together is not good. 3. Too old spark plugs can cause shutdown.

When does a car lose power while driving?

Here’s one of the most expression you often encountered in car loses power while driving situation. You often encounter this situation when suddenly running at an unusually high speed. The soot in the combustion chamber fell into the mouth of the valve so it could not be closed, the machine died suddenly.

What to do if your Mazda 6 won’t start?

2009 Mazda 6 won’t start. Green key light comes on (registers the key is present). Everything lights up and the battery is fine. Starter won’t engage. … read more

How to fix a Mazda that stalls at stop?

Remove the air hose from the throttle body. Disconnect the throttle body connector. Remove the throttle body from the intake manifold, with the water hose connected. Clean the throttle body on the air hose side using a soft, clean shop cloth, sprayed with engine cleaner (Mazda recommends their P/N 000-77-A86).

What does it mean when your Mazda 6 won’t start?

This just means that the engine doesn’t move when you turn the key. The second way that your 6 won’t start is when the engine turns when you engage the starter, but it won’t fire and run on its own. When the engine isn’t turning over at all, that’s a bit easier to diagnose than when it is cranking but not firing.

Why does my Mazda 3 stall at stops?

Something similar happened to me with my 2004 Mazda 3. At the end, the problem was the fuel pump. After disconnecting the battery to jump start another car, my car’s PCM could never re-learn how to control the engine because the fuel pressure was way below specifications.

Why does my Mazda 3 crank but not start?

Not sure if this is relevant or not. After doing a routine oil change in my garage, the engine will crank (pulleys and belts rotate), but it does not start. I called AAA, they showed up and immediately hooked up a battery booster.

Mazda6 2004 cranks but won’t start. Looses spark after first rotation. Experience: ASE Technician advanced level specialist. Wisconsin certified emissions state inspector Hello! What size engine do you have? Are there any codes in the computer? Does the check engine light come on with the key on?

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