Thread: Check Engine Light - Freelander

Originally Posted by garrycol

Tonite I removed the air sensor and the coolant sensor and put a multimeter on them testing resistance from boiling water temp to -18 in the freezer. All tests pointed different resistances with different temps so both seemed to be working OK. Tested the wires going to the sensors and got the required 5v so there is no wiring problem.

I put the sensors back in the engine but the problem was still there so I disconnected the wires to both - engine started OK without the sensors and the check engine light didn't come on (strange cause I would have thought the ECU should have realised the sensors were not connected).

I connected the air temp sensor and there were no problems but when I connected the coolant sensor the engine revved on start and the engine check light came on - I disconnected the air sensor and the fault remained so it would seem that the water coolant sensor is faulty when it is hot but not when it is cold.

I will get a new sensor and see what happens and if all is OK cancel the code test.

Gazzz

Bought the new sensor and installed - shock horror the check engine light remained on.

Had the codes read and indicated a faulty coolant sensor. Once the codes were cleared the problem has gone.

So the problem was the coolant sensor but even with a new one the ecu refused to accept the sensor was seviceable and still told the engine to run like a dog. When the codes were cleared the ECU it finally decided all was OK and now all is OK.

What a load of crock - the only way the ECU codes can be cleared is via the test computer - disconnecting the battery does not work - so even with the sensors all serviceable you have to drive around in a dog - not a problem if you are near a stealer - $50 and you are on your way. What if you are not near one of the ever reducing number of dealers.

A simple button in the car to push to clear the fault codes would be real handy - if the problem continues they just come back and you do have to go to the code remover man.

Any way all fixed.

Gazzz

Originally Posted by Pedro_The_Swift

It might pay you to remember mcrover
we have a few of those "bottom feeders" as you call them,, as regulars on these forums. Their freely given technical knowledge and good nature helps makes this site the amazing place WE ALL come to when we have a problem,, or just for a chat.

And the dealer people on this site are great and I would think they would actually support much of the criticism leveled at their bretheren. Indeed many a time, if I recall correctly, these great people have helped us to get the best out of our dealers.

So when critiscm is being levelled at stealers, I we are refering to the dealer culture and at times at specific dealerships but never at individuals - it is the culture which I have a problem with and unfortunately it is this culture that is also reflected by the culture in the parent company.

Dealer people on the forum - you are great and I for one value your information and advice on the tricks of the trade but I still despise your brothers (so to speak).

Gazz