Injectors not pulsing
Injectors not pulsing Reasons for injectors not pulsing?? I only checked 1 w/ a noid light, but it only tries to start when spraying starter fluid. I just got HP tuners, is there a way to check the injectors with it??
It is a 72 nova, new PSI harness, 06 escalade engine, 05 ECM
It is a 72 nova, new PSI harness, 06 escalade engine, 05 ECM
connect the scanner with the ingnition on before you crank the engine. Look to see if you get injector plusewith, spark, and cranking rpm. Could be cam or crank sensor related. Have you turned 'vats' off in the tune?
Yes, the vats selection is on "none"
thanks
Crosstrain,
Make sure that the switched power wire coming from the back of the fuse relay center is getting power with the key in the 'On' position and the 'Crank' position. Please call us if you have any questions and we can walk you through the troubleshooting procedure. Thanks.
Jon
Make sure that the switched power wire coming from the back of the fuse relay center is getting power with the key in the 'On' position and the 'Crank' position. Please call us if you have any questions and we can walk you through the troubleshooting procedure. Thanks.
Jon
__________________
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
Crosstrain,
Make sure that the switched power wire coming from the back of the fuse relay center is getting power with the key in the 'On' position and the 'Crank' position. Please call us if you have any questions and we can walk you through the troubleshooting procedure. Thanks.
Jon
Make sure that the switched power wire coming from the back of the fuse relay center is getting power with the key in the 'On' position and the 'Crank' position. Please call us if you have any questions and we can walk you through the troubleshooting procedure. Thanks.
Jon
SmokingWS6, I really appreciate the offer. It may be a little far. I live in north east Indiana. I would have to trailer it, which I would be willing to do.
Jon, I may give you a call to talk me through it. Thanks.
I'll see how it goes this weekend
What next???
VATS is turned off.
switched power wire coming from the back of the fuse relay center is getting power with the key in the 'On' position and the 'Crank' position.
Had Jon at PSI look at the computer & he said he could not see why the injectors were not pulsing from looking at computer.
Checked the crank sensor & cam sensor wires going to the correct plugs.
I did find out my intake was missing the plug for my MAP sensor though. so I have to get 1 of those.
Does anyone know if you can go into the computer and switch on the circuit for the injectors to pulse? Just to see if they are working.
The guy helping thinks it is still in the computer because we have looked at everything else?
Any suggestions?
Thanks
VATS is turned off.
switched power wire coming from the back of the fuse relay center is getting power with the key in the 'On' position and the 'Crank' position.
Had Jon at PSI look at the computer & he said he could not see why the injectors were not pulsing from looking at computer.
Checked the crank sensor & cam sensor wires going to the correct plugs.
I did find out my intake was missing the plug for my MAP sensor though. so I have to get 1 of those.
Does anyone know if you can go into the computer and switch on the circuit for the injectors to pulse? Just to see if they are working.
The guy helping thinks it is still in the computer because we have looked at everything else?
Any suggestions?
Thanks
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote Let us know when you get the MAP hooked up. Even though we didnt provide/program the PCM, I am more than willing to flash the tune onto a good core in order to eliminate possible PCM issue. Please give us a shout once you have tried it with the MAP hooked up.
Jon
Jon
__________________
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
Thanks Jon, I will call you later today.
Jon @ PSI has been great!! He is sending me another computer to try. This way I will know if it was a bad computer or something else. I feel like we have checked almost everything else, so I really think it is a bad computer. Hopefully I will get that by this weekend, and I can give it a try.
Last edited by crosstraining; Jun 13, 2011 at 06:42 PM.
I got a MAP sensor
Current issues:
2 pistons not firing. the front passenger & the 2nd from the front on the driver side.
Ok, testing results for today:
1. Switched plug wires. Switched 1 that 1 knew was firing to the 1 that was cold. No change.
2. switched coil pack. same thing, switched for 1 that was firing. No change.
3. checked spark. good spark.
so, at this point I pulled the plugs from the 2 that were not firing. They were dry. I thought maybe the injectors were bad.
4. put a noid light on the 2 bad ones. They onyl lit up 3-4 times. Put the noid light on 2 good ones & they were kept lighting up regular.
Why would the injectors pulse just a few times?
Current issues:
2 pistons not firing. the front passenger & the 2nd from the front on the driver side.
Ok, testing results for today:
1. Switched plug wires. Switched 1 that 1 knew was firing to the 1 that was cold. No change.
2. switched coil pack. same thing, switched for 1 that was firing. No change.
3. checked spark. good spark.
so, at this point I pulled the plugs from the 2 that were not firing. They were dry. I thought maybe the injectors were bad.
4. put a noid light on the 2 bad ones. They onyl lit up 3-4 times. Put the noid light on 2 good ones & they were kept lighting up regular.
Why would the injectors pulse just a few times?
Last edited by crosstraining; Jun 13, 2011 at 06:42 PM.
Did you check continuity in the wires going to the injectors? One side should be +12v switched so check continuity between it an the switched power source...the other wire check between injector end and the pin at the ecm...
could also swap injectors around like you did with the coils and see if the problem stays or moves
could also swap injectors around like you did with the coils and see if the problem stays or moves
Did you check continuity in the wires going to the injectors? One side should be +12v switched so check continuity between it an the switched power source...the other wire check between injector end and the pin at the ecm...
could also swap injectors around like you did with the coils and see if the problem stays or moves
could also swap injectors around like you did with the coils and see if the problem stays or moves
You will have continuity if you are gettin some pulses use a headlamp as a testlight to see if the wires will carry the current. A single strand of wire will give you a good continuity reading. I would check connections.
Give me a call for the pinout. Thanks.
Jon
PSI
Jon
PSI
__________________
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'