No signal cranksensor on ecm

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mjb.thomassen

Member
Posts
83
Location
breda
On 18 pin connector on ecm I have no voltage.groundwire is ok. This after looking for problem for very bad starting with a lot of blue smoke.
Checked injectors (replaced one)
Good sparks
Good maf
Good resistance movement tps
Good voltage idling sensor
Good vacuüm hoses
no air leaks
Good pressure rail 2.4
 
mjb.thomassen said:
On 18 pin connector on ecm I have no voltage.groundwire is ok. This after looking for problem for very bad starting with a lot of blue smoke.
Checked injectors (replaced one)
Good sparks
Good maf
Good resistance movement tps
Good voltage idling sensor
Good vacuüm hoses
no air leaks
Good pressure rail 2.4
Click to expand...

Wot engine ? Wot year ? Any info really as the crystal ball is a bit fogged ...
 
Where does pin 18 come from?

I have always thought the cranksensor was a single point failure (i could be mislead) but if you have spark, i dont think its that.
I would need to check, but not sure it gives "out" a voltage more a signal.

How many miles? Blue smoke is usually oil being burnt.

J
 
It has a bad smell of petrol, as if the engine has a wrong timing.
The engine has 170k miles on it.it started with 1800 rpm after starting the car.after a minute it went to 1000rpm.
And one morning the very bad starting came up.most of the time it won t start at all.
 
If it wont start then I would say you could have a bad CPS, if you have no spark. Do you still have spark in the "no start" situation?
But....I am by no means an eggsquirt, as I said I would need to look.

Have you done a compression test?

J
 
mjb.thomassen said:
Pin 18 is empty. Crank is pin 12. And has pink with black
Click to expand...
Maybe we are losing some in translation here.

Pin 18 is empty? Do you mean it should have a voltage but doesnt?
What are you measureing on pin 18, for what?
If the CPS is pin 12 what do you read/see?

I cant look at the wiring diagrams i have at the moment.

J
 
mjb.thomassen said:
It still has spark in the no starting situation.
I have not done compression test yet
Click to expand...

I would have to say do a compression test to move forward. Given what you have ruled out in post 1

You have spark, and smell of feul (bad combustion) and blue smoke(oil burning).

J
 
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