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in used equipment, it's worth?

Hello, I cleaned MAF yesterday with acetone. How to test MAFand guilty also test 2nd lambda sensor. Thank you again for your response.

this morning : coolant sensor hot 300 ohms.

now 2200 ohms

I am now a 2100 oms

I can not start the car the children sleep

another phenomenon: when I put the lights or put something on the battery take the regime falls and then rises above

18OO homs cold rather lukewarm

hello, there are 3 wire at coolant sensor?

hello, ar cruise, it always oscillates at 0.4 v and 1.0 v and idle it gives the same thing

hello, Is this normal (lambda sensor disconnected), rolling I do not feel any change in engine behavior.

hello, I measured. A terminal is fixed at 0.30 V. the other n not stop oscillating idle between 0.45 and 1.0 v.

That's right, the engine was running with disconnected sensors.

Another problem appears. rarely. it happened to me three times. Unlit engine and the ignition on, flashing lights continuously few seconds. I think it has nothing have.

thank for your reponse. I'll try to take signal like that.

hi, I disconnected the connector and took the voltage on each terminal connector (ie lambda sensor disconnected): the first was the mass, the second battery power, the third a fixed voltage to 0.7 v which does not move, and fourth fixed voltage of 0275 V. The voltages are not varied at all...

honestly, this is the first serious help for 2 months and I thank you very much. I could not do that weekend. I'll give you some news.

If I understand correctly, I must first also test the lambda sensor (voltage around 0.45 V at low speed and high speed), and then test again hot (if the voltage is 0.9 V, it is the temperature sensor is faulty). I take the voltage across the lambda sensor and not across the temperature sensor...

When the engine is warm, idle is low (550 rev / min) and not very stable.

hello, Thanks for your response. if the temperature sensor coolant was down, the ECU would report in default?