engines turns over with no start after crank sensor replace
#1
engines turns over with no start after crank sensor replace
Hi everyone. I have a 96 camaro 3.8l. I recently had to replace my crank position sensor and after installation of new one car will turn over but not start. I have exchanged part and still have same problem. Brand new icm, coil packs good and fresh plugs and wires? Any ideas before I have to overpay a professional would be greatly appreciated. This is my daily driver.
Edit: i am getting fuel. Pump kicks right on have new filter and fuel is getting to injectors
Edit: i am getting fuel. Pump kicks right on have new filter and fuel is getting to injectors
Last edited by jshblue8907; 01-12-2015 at 10:07 AM.
#2
You replaced a bunch of stuff, but have you checked to see if the plugs and injectors are actually being fired?? Have you tested fuel pressure with a gauge, just seeing fuel at the rail does not mean much.
#3
Edit: I have all data pro on my computer as reference and my haines book and researched online before pulling the harmonic balancer and used a correct puller so I would assume my process was correct.
Last edited by jshblue8907; 01-12-2015 at 01:40 PM.
#4
Decided i need to take chill pill and test everything NOW instead of just jumping around guessing whats wrong and assuming that things are still operating correctly. Will get back to you when I've troubleshooted a bit more correctly.
#6
Yes, what prompted me to replace it was the symptoms itd been having since i bought the car last year and about two weeks ago started running very rough misfiring and losing power momentarily while driving down the highway. I plugged in my scanner and had p0336 p0300 showing. I bought the sensor because someone had also suggested that with the issues i was having previously was caused by it. after i popped the new one in no start. changed it out for another new one same problem. im learning but not very experienced other than minor work like just swapping parts so i didnt think about testing the plug or going through all the basic engine rotates but no start troubleshooting steps as was suggested to me above. Hopefully it warms up enough in my garage by tomorrow that I can get started on it again.
#7
after trying to start a few times try scanning for trouble codes and see if you can get an idea where to look. it may be that the harness or connector to the sensor was thinking about taking time off and when you moved it around it went south. take connector off check for signs of damage and look inside to see if it looks like it will connect, sometimes the flexible part of the connector will get bent so as to not connect correctly.
#8
after trying to start a few times try scanning for trouble codes and see if you can get an idea where to look. it may be that the harness or connector to the sensor was thinking about taking time off and when you moved it around it went south. take connector off check for signs of damage and look inside to see if it looks like it will connect, sometimes the flexible part of the connector will get bent so as to not connect correctly.
#9
if you have not already go here and download the factory service/shop manual. click on 1996fb http://www.mediafire.com/?40mfgeoe4ctti
#10
Join Date: Nov 2007
Location: Eastern PA,
Posts: 10,354
Can your scanner read sensor information? If so check to see if you are getting a RPM signal.
Just a FYI, new parts go bad and with aftermarket electronic stuff it is very common. It is rare to get a DOA item because they normally test right before they put it in the box. It has been my experience that if the electronic device lasts more than a month of every day use it is probably ok.
Back before car quality got so good most warranty repairs where in the first 3 month and 3,000 miles. There are not many parts on a car I have not had to replace with less then a 1000 miles on it. I can remember one new 1989 v6 Camaro that started missing 150 ft away for the trailer is was unloaded from. I think it had 18 miles on it so whatever failed made it through at least 15 miles of testing.
Just a FYI, new parts go bad and with aftermarket electronic stuff it is very common. It is rare to get a DOA item because they normally test right before they put it in the box. It has been my experience that if the electronic device lasts more than a month of every day use it is probably ok.
Back before car quality got so good most warranty repairs where in the first 3 month and 3,000 miles. There are not many parts on a car I have not had to replace with less then a 1000 miles on it. I can remember one new 1989 v6 Camaro that started missing 150 ft away for the trailer is was unloaded from. I think it had 18 miles on it so whatever failed made it through at least 15 miles of testing.
Last edited by Gorn; 01-17-2015 at 11:50 AM.