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How To Crank An Avensis Diesel Engine Without Starting It


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#1 hubla

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Posted 05 January 2012 - 04:56 PM

I'm trying to measure the power consumption of the starter motor on my Avensis 2.2 D-CAT. But it is difficult to get a good reading of the ampermeter before the engine starts. Any ideas on how to keep the engine from starting in a safe manner? I don't want to start pulling out fuses and electrical connections without knowing that it won't hurt the engine.

Cheers,
Håvard

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#2 igormus

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Posted 05 January 2012 - 07:24 PM

I'm trying to measure the power consumption of the starter motor on my Avensis 2.2 D-CAT. But it is difficult to get a good reading of the ampermeter before the engine starts. Any ideas on how to keep the engine from starting in a safe manner? I don't want to start pulling out fuses and electrical connections without knowing that it won't hurt the engine.

Cheers,
Håvard


hello
for sure -- the method is very simple -- just disable SCV (remove 12V wire from it)--> this stops injection but at the same time the pump is full of diesel to have reliable internal parts lubrication. cheers/Igor
NB - do not forget to connect wire again after your trials
good luck

#3 hubla

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Posted 05 January 2012 - 09:26 PM

I'm trying to measure the power consumption of the starter motor on my Avensis 2.2 D-CAT. But it is difficult to get a good reading of the ampermeter before the engine starts. Any ideas on how to keep the engine from starting in a safe manner? I don't want to start pulling out fuses and electrical connections without knowing that it won't hurt the engine.

Cheers,
Håvard


hello
for sure -- the method is very simple -- just disable SCV (remove 12V wire from it)--> this stops injection but at the same time the pump is full of diesel to have reliable internal parts lubrication. cheers/Igor
NB - do not forget to connect wire again after your trials
good luck


Thanks for the tip, but I'm not entirely sure where the SCV is located on this car. I've looked around the general fuel-pump area, but couldn't find anything that stands out. Can you describe more closely where to find it on the 2.2 D-CAT engine?

#4 ormi

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Posted 05 January 2012 - 11:11 PM

its on the high pressure pump mounted to the head on the gearbox side

#5 hubla

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Posted 06 January 2012 - 10:54 AM

its on the high pressure pump mounted to the head on the gearbox side


Thanks! I now managed to get a good reading on the starter motor. It's consuming 200-480 amps when warm and 400-600 Amps when cold (-10 C). Voltage drops from 12.6 to 10.4 when cranking. My Toyota mechanics says normal consumption is 60-90 Amps, so I guess I'm up for a new starter motor.

#6 Gabaunion

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Posted 31 May 2012 - 10:24 PM

Your meter isn't working. You would need a bank of submarine batteries to get 200-600 Amps and still have over 10v.

If your car isn't starting, it's probably the SCR.

#7 Cml24

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Posted 04 June 2012 - 09:56 AM

Why do you need a new starter motor?

If you can't get a reading because the car starts too quickly, doesn't that mean it starts fine?

#8 hubla

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Posted 17 July 2012 - 12:42 PM

Why do you need a new starter motor?

If you can't get a reading because the car starts too quickly, doesn't that mean it starts fine?


It definitely was the starter motor. The new motor cranks fast and easy, and the car is now very easy to start, even in cold northern-norway winter weather (-20C). The old starter required a top-charged battery and wold crank very slowly. On a cold morning, it would be very difficult to tart and the battery would be empty in 10-20 seconds of cranking. The symptoms and solution does make sense since the starter simply drains the battery very quickly.

#9 hubla

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Posted 17 July 2012 - 12:48 PM

.

#10 hubla

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Posted 17 July 2012 - 12:51 PM

Your meter isn't working. You would need a bank of submarine batteries to get 200-600 Amps and still have over 10v.

If your car isn't starting, it's probably the SCR.


My knowledge of these things are limited, but my battery, a Sønnak Powerline, is rated for 800A and 80Ah. I think the measurements are feasible.

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