redlowrey
Senior Member
Last Activity: Yesterday, 03:01 AM
Joined: 08-23-2011
Location: australia
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I meant to add, have you got another meter to check those primary's if they are 3.8 ohms that is high for for an electronic ignition system, I never check... -
To check the secondary readings connect your meter to the spark plug ends on each coil they should between 16 and 30 kohms, that is thousand ohms do,...Leave a comment:
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It looks like you are on the heater circuit of the 02 not the signal the way the multimeter is fluctuating because that circuit is duty cycled, what is...Leave a comment:
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Mate no ignition system has 10 ohms on the primary, normally between .6 and 2 ohms, and around 10 to 20 k,ohms for the secondary, if you did have 10 ohms...Leave a comment:
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I was pretty confident you were going to see 5 volts coming from the computer to the cam sensor, that is a pull down circuit. when you come back we will...Leave a comment:
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Why didn't you come back with the results from the vacuum pump test with the map sensor, that is the sensor that tells the computer how much fuel to deliver...Leave a comment:
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I know what you are saying, some systems send out a five volt bias voltage on the cam sensor line and the cam sensor pulls the bias voltage high and low....Leave a comment:
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I have a gut feeling that Y/BL should have five volts on it with the key on, check with your good engine.Leave a comment:
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So it would be 1.7 volts with the map sensor disconnected and the key on, which is no good must be 4 volts. I had a look on your sds and I could see the...Leave a comment:
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I wrecken it will be a capacitor for the main control relay, what color are the wires, pull the computer out the way and you see the main control relay...Leave a comment:
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What does not make sense with this problem, you say there is no voltage change on pin 29 signal wire no matter what you do, the computer must be sensing...Leave a comment:
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You are at sea level aren’t you, not high up in the mountains. I did state you should see 4 volts at sea level.Leave a comment:
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I was originally going to get you to check all the voltages at the computer, that is where I check everything but I thought you may struggle with the...Leave a comment:
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There should be no resistance between pin 29 on the computer plug disconnected from the computer and the map sensor plug white wire disconnected from...Leave a comment:
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Or you disconnect the plug from the computer and the map sensor and do an ohms test on the signal wire at the computer to the map sensor plug to see if...Leave a comment:
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I had a gut feeling it would not fix it, see if you can borrow a computer, something has failed internally keeping the signal low.Leave a comment:
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Ok I have miss read the voltage and that reading is fine, forget about running the jumper, I would have removed the sensor and checked it on the work...Leave a comment:
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So is it 1.8 volts or 1.8 mv if it is 1.8 mv forget about the jumper wire I have miss read the reading.Leave a comment:
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Hang on I just read your post again, did you change the voltage scale when when you went from the five volts on the red wire to checking the ground. ...Leave a comment:
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Don’t waste 300$ on a map sensor till you fix the sensor ground problem first, it probably won’t be needed. Make a temporary wire with an...Leave a comment:
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