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voltages

  1. Lambda / Oxygen sensor voltages 3.0 24V CF3

    Alfa GTV & 916 Spider
    Hello! I'm, lucky enough to have a CF3 engine with 4 lambda's, and want to bottom out if my lack of power is due to one of them. I have connected a diagnostics tool to them with the engine running and found the following: Bank 1 sensor 1 - 0.445V all the time, no matter what the RPM Bank 2...
  2. Voltage at ECU is much less than battery input

    Alfa 147, 156 & GT
    156TS 1.8 has been giving error codes on MES, but with help from this forum, the culprit seemed to be a 'flat' battery, because MES reported only 12.15V available to the ECU. But when I removed the battery for charging I checked the terminal voltage which showed 12.51V i.e over 75% charge (at...
  3. Multiecuscan - pre-cat Oxygen sensor output voltages - Alfa 2L JTS engines

    Engines (TS, JTS, JTD & V6)
    I have a borderline high CO (Carbon monoxide) level which can be caused by numerous factors such as simply an old air filter, or worst case... fuel injectors. Before I touch anything, I would like to compare Oxygen sensor output voltages with another 2.0 litre JTS owner to establish whether my...
  4. yes another maf problem (voltages)

    Alfa 147, 156 & GT
    I got a replacement maf, used one from ebay (I know) but when i first put it on the car was undriveable so i unplugged it again, however i tried plugging it in again today and it ran so much better. there is a but of course. it seems to run fine up to 4000 rpm when it loses power and dont want...
  5. 156: MAF/AFm sensor voltages

    Alfa 147, 156 & GT
    As a follow up to my last 24 hours of torture I decide to *give back* a little info to the A0 community. Attched is a picture of *Alfenia's* MAF/AFM sensor's connector, Pins 1 to 5. With engine stopped & key at MAR: 1. 3.65 v 2. 12.0 v 3. 0.00 v 4. 4.95 v 5. 1.08 v With engine running &...
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