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Automotive electricity

Fiat Uno Fire 2006 1.3 regulates badly when you turn on the electro

egui00
egui00
5
hace 5 años
hace 5 años
Hello friends, I have a problem with my car, first as I put in the title the car regulates badly when starting the electric fan either by temperature or when the air conditioning is activated, besides it consumes a lot of gasoline. I already tried several things and I don't find the cause of the problem, probe injectors, coil, wires, spark plugs, alternator, battery, and all the sensors I could see with the scanner (ELM327) apparently everything is normal, about 2 weeks ago the car threw a little black smoke through the exhaust and failed without turning on the electro, unstable idle, loss of power, high consumption, then take out the spark plugs and they were all charred, clean them and went on the road to accelerate it a little, to 120 and 130 km x hour in part and so far it works well, only when I turn on the air or when the electro is turned on the idle is unstable and loses power but if not. well hopefully you can help me, and try everything but I want to hear your opinions and keep looking for the cause of the problem. Thank you in advance..
Chuca
Chuca
394
hace 5 años
hace 5 años
Hello companion, first of all, does the ecu motor throw any error code? To begin, tell me everything that you fit exactly since I see that you do not name the lambda probes of the catalyst I hope your answer do not forget to like and accept a greeting
egui00
egui00
5
hace 5 años

hello chuca, thanks for answering, the ecu does not throw me any error, I can see with the scanner and the multiecuscan program that the values of the lambda probe oscillate all the time between rich and poor so I assume that it works well, so far it does not I changed nothing since the start of this fault and the high consumption, I had changed the spark plugs and wires a year ago to the original ngk, now I measured the coils' side and it gives me 11.6 kohms I think they are fine. test the injectors outside and there is no plugging or locking. If you can think of anything else to try let me know. thank you.

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Chuca
Chuca
394
hace 5 años

Hello partner I can think of several things but I would need more data of the type engine and year to give you better info anyway that model has air pressure sensor admission the fault can come to you for several things 1 since you comment that it spends a lot and I would start by The mass air meter (flowmeter or hot wire) when giving this bad info to the EC usually spends a lot of gasoline and having an unstable idle happened to me recently with a Nissan Almera 1.5 opened up to see what data it throws in the scanner of the flowmeter parameter if you have it mounted there are some that carry and others not

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egui00
egui00
5
hace 5 años

This engine is the FIRE 1.3 8v MPI the car is a 2006 model, this has the pressure and air temperature sensor in the intake, so the two sensors are in one, according to the values I saw when scanning the car is all right, If you need me to pass you photos with the values that the ecu throws, let me know and I will just have them. I told you that two days ago I took out 2 spark plugs and they were clean, not like 3 weeks ago or so that I had taken out all 4 and they were totally charred.

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Chuca
Chuca
394
hace 5 años

Hello fellow, I rectify the manifold pressure gauge is another piece apart from the flowmeter anyway there are models that only mount flowmeter without the manifold pressure sensor collect the info by ai it would not be bad to see what pressure values manifold temperatures are there to then measure where aga missing ok put photos so you can see sorry for the delay I am full of work today and I do not have much time I hope your photos and data greetings

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egui00
egui00
5
hace 5 años

Ok, thank you very much. I also have little time but I can hardly upload the photos with the values you asked for.

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egui00
egui00
5
hace 5 años

I still could not scan the car to pass you the data, I will try to do it these days, what I did was test the resistance of the coils of the step by step and it gives me good for what I read, almost 60 ohms, I also tested the continuity of the connector from this to the ecu and also that of the TPS and the cables are fine. as soon as I have the data I upload them here .. thanks again ..

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egui00
egui00
5
hace 5 años
hace 5 años
the problem was a ground wire that goes from the gearbox to the chassis, I had the loose screws for that false contact the car regulated badly, since I solved it it was perfect, sorry that I did not share it before ... thanks. Regards.
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