need help still no injector pulse

[Favian Cuevas]

Well I gone through the no start tree and so far evey test passed ...
So far I've tested
Crank sensor
Cam sensor
Fuel pressure
Spark
An they tested ok

but the one is when I'm testing cam sensor and crank sensor voltage b to c I'm at 5.27v the chart its telling me it should be 6-9v

I also checked power to the positive side injector harness an its at 12.36v
If I jump b to c on the crank sensor the noid light will flash

I hope I make sense an wonder if anyone can shine some light on me


I hooked up NOID light an it wont blink on crank ..

 

[bpman1234]

fuel ?

 

[Favian Cuevas]

91 oct an its new fuel in thw tank an pressure is at 42psi

 

[bpman1234]

check the fuse?

 

[Favian Cuevas]

Yes all fuses are good

 

[bpman1234]

http://www.vortexbuicks-etc.com/ check this site out very helpful if you haven't yet .go to trouble shoot.

 

[bpman1234]

I just fix my friends car with the same .it had no injector pulse and no spark replaced the crank sensor fired up.

 

[Favian Cuevas]

Yes i have an ive gone over like 3 times an
Im still geting the same results i do have a question on this chart number 1 were its talking about steady light or light off are they refuring to the SES or the injector noid light ???

 

[Favian Cuevas]

I do have spark because sad to say if i put fuel down the intake or ether fluid it will try to start .

 

[bpman1234]

ses.sorry just read it there talking about the noid light

 

[bpman1234]

then the tree is telling us its the ecm.

 

[Favian Cuevas]

Ok well that makes sense now i think i might have a bad ecm because injectors test out good an the the cam test out good so im left with the ecm

 

[greeneyegi]

Just had an issue like yours on a car.It turned out the 12v power wire where it plugs into the injector harness wasnt making contact.Someone had shoved a speaker wire into the plug to make it work.....yeah i would had never thought of that.
Anyways check that you have continuity at the injector harness,from the plug to each injector plug wire?
Check each injector plug while key is on to see if you have 12v on one side of the injectors.
I was surprised but just a check.Real easy as you can pull the harness out and do it on bench.

 

[bpman1234]

Is there anyone that you know close to you with a Gn that can switch it out to test ? To make sure?

 

[Favian Cuevas]

Just had an issue like yours on a car.It turned out the 12v power wire where it plugs into the injector harness wasnt making contact.Someone had shoved a speaker wire into the plug to make it work.....yeah i would had never thought of that.
Anyways check that you have continuity at the injector harness,from the plug to each injector plug wire?
I was surprised but just a check.Real easy as you can pull the harness out and do it on bench.

Ama check

Just had an issue like yours on a car.It turned out the 12v power wire where it plugs into the injector harness wasnt making contact.Someone had shoved a speaker wire into the plug to make it work.....yeah i would had never thought of that.
Anyways check that you have continuity at the injector harness,from the plug to each injector plug wire?
I was surprised but just a check.Real easy as you can pull the harness out and do it on bench.

Thank you ama check that out as soon as i get home ..

 

[Favian Cuevas]

Well i do have nick micale so ama talk to him

 

[vader87]

Check your TPS

 

[vader87]

Check your TPS

 

[Favian Cuevas]

Ama check that as well i dont think ive checked the tps yet ..

I forgot to mention i am having obd1
code #12
Will this have anything to do

 

[scgnx2]

MAL code 12 Means error code system is functioning normal, I believe.