2000 s70 n/a no spark

Post by **regent** » 01 Oct 2015, 14:56

Engine Compartment Fusebox
The fuse itself should be OK in your case (otherwise the ECM and a ton of other branches would lose power)
Sorry, cross the ECM out (I was looking at the Diesel arrangement)
The HO2S heater circuits will be affected on your car.

Yes, I would definitely check it

Veilleuxpbd · Post by **Veilleuxpbd** » 01 Oct 2015, 15:52

But in the engine compartment no fuse is marked as 11b/4, only numbers like 1 2 or 3.
Is it the number 4 fuse?
Also, what do you mean by 'cross the ecm out', is it not something affected by this fuse? Is it something I should consider as 'ok'?
Thank you

Post by **abscate** » 02 Oct 2015, 02:02

Veilleuxpbd wrote:Okay, Pin 1 has intermittent 12vdc when attempting to start the car, which from what I understand means that the ECU is telling the ign coil to fire.
Pin 2 has about 5vdc on it when ign is on.
Pin 3 and 4 are dead.

Does this mean that the ECU is good, but that the supply wire for the primary winding in the coils is gone?

I think we are getting closer here. Pin 1 should be constant 12VDC, not fluctuating, correct. The coil is fired by the ECU grounding pin 4, not by turning on pin 1

( my understanding and consistent with wiring diagram in thread)

Are all those mounting bolts tight?

( deleted bad information)

Post by **mikealder** » 02 Oct 2015, 03:04

11b denotes the electrical distribution box in the engine bay, the number four demotes the fuse number 4 within the electrical distribution box - Mike

Post by **abscate** » 02 Oct 2015, 04:31

Thanks mike, corrected my mistake above

Veilleuxpbd · Post by **Veilleuxpbd** » 03 Oct 2015, 10:02

Well.. two good news and a bad one.

First good; the car runs!

Second good; you guys are awesome, and I want to thank everyone who's helped me

Bad one; I am an idiot

I had checked the fuses when the car got towed home, and every fuse was ok, but since then I worked on the car and attempted to start it (and jump it) a number of times. Fuse 11b/4 was indeed shorted, changed the fuse, boosted the car, gave it a few cranks and smoked the whole parking garage with oil smoke

Again, I am deeply thankful for everyone that has helped, I'll be on my way to find a job

Post by **abscate** » 03 Oct 2015, 13:07

Nice.

Nothing like that feeling of those 5 cylinders springing to life after a week of troubleshooting...except hearing a 1954 36 HP VW engine last run in 1963 start up, perhaps.

Post by **Ozark Lee** » 03 Oct 2015, 15:00

abscate wrote:Nice.

Nothing like that feeling of those 5 cylinders springing to life after a week of troubleshooting...except hearing a 1954 36 HP VW engine last run in 1963 start up, perhaps.

Barn find?

...Lee

Post by **abscate** » 03 Oct 2015, 15:33

Barn find of two sedans and eight motors

Post by **regent** » 03 Oct 2015, 16:59

Veilleuxpbd wrote:Well.. two good news and a bad one...

Two is greater than one (usually)
Good job, glad you sorted it. Don't forget to pay yourself for the hard work!

2000 s70 n/a no spark

Re: 2000 s70 n/a no spark