just replaced the knock sensor and now the engine wont start!!!! help

[cecil bass]

I just replaced the knock sensor now the engine won't start ..... I took a reading from across the coil pack I'm getting 10.6 Ohms, now I dont know what to do....... Some one help me track down this problem

 

[PaCemkr86]

Are you getting spark?
Fuel pressure?
If you have a noid light you can check injector pulse
Did you check your ecm fuse?

 

[TurboBob]

the injector harness has a connector right by the knock sensor. check to see you didn't knock it loose or pinch a wire.

when you replaced the sensor, what parts did you remove?

Bob

 

[cecil bass]

Just removed the coil and plug wires

 

[cecil bass]

When I try to start it turns over then it sound like it hiccups......

 

[PaCemkr86]

Did you double check you didnt cross any plug wires?

 

[cecil bass]

Yup, at first I had a few crossed wires but I fixed it .....

 

[earlbrown]

If you didn't forget to connect the harness to the coil (coil module actual)... Take that 1/4" bolt and back it out about 1/4 turn. On some cars, clamping that retainer bolt down tight will cause bad connections and kill the spark.

 

[TurboBob]

the terminals in the coilpack connector can lose tension from heat and age, or it may be loose (or too tight)

Retracing your steps should reveal the issue..

B

 

[cecil bass]

could my problem be a bad coil or modular???

 

[skidman]

Did you tighten ign. mod. to mounting bracket nuts? There are 3 11mm nuts on my cars. Once I swapped mods/coils from one car to another and left one loose and it ran like$hit. Just a thought.Mark.

 

[cecil bass]

Yup everything tight!!!

 

[PaCemkr86]

Did you check to see if you have spark to the plugs?

 

[cecil bass]

I don't know where to go from here....

 

[cecil bass]

I gonna have to wait til the wife comes home I can't check the spark by myself ..... I'll post results in the morning

 

[threerail]

Did you unplug the ecm wire and forget? Check fuses and fuel pressure?

 

[cecil bass]

Ecm wire is connected ,all fuses are good , fuel pressure is normal. If OK unplug all the wires from the coil and turn over engine nothing just smooth crank when I plug the wires in it will crank over a few times fine then the engine hiccups and the dash lights dim..... So that's letting me know its something with the ignition let know what you all think?

 

[earlbrown]

Does your plug wires match this technical drawing?

...and did you loosen off that 1/4 bolt that holds the wiring harness to the coil module?

 

[Mark E.]

Ign module must have a good ground through the mount. Thats all I got right now.

 

[cecil bass]

Does your plug wires match this technical drawing?

...and did you loosen off that 1/4 bolt that holds the wiring harness to the coil module?

Yes tried loosening the bolt all the wires are going to right cylinder......