2005 equinox 3.4

[Crracing]

I have a 2005 Chevy Equinox with a blown head gasket so i found a 2007 equinox engine at a great deal and swapped the engine and now i have no fire to the plugs thinking it may be the cam sensor since that was the only sensor that was different. But it plugs up the same to the pigtail from the main harness but the actual sensor is different. Any help would be greatly appreciated.

[Guest]

It could be the crank reluctor ring. There was a change from the earlier 7x (AKA 6+1) ring to a later 56x ring. I thought the change was in 2005 though. You will need to do some looking into that. The reluctor ring is internal to the engine, so it would not be obvious just by looking at the engine.

There is a way to see what type of reluctor wheel is in the engine, if the original coil pack was/is attached to the engine.

The bottom coil pack in the below picture uses the 7x reluctor, the top one uses the 56x reluctor. They will not interchange.


Have you done the basic checks? Checked for spark, for fuel, for injector signal?

[Crracing]

It did come with the original coil pack on the engine and it the same as the top one. I checked the fire at the plugs with a screw driver in the plug wire with no fire. I also checked for fuel at the vavle on the fuel rail and it has 60psi.

[robertisaar]

alldata says: 2005 equinox 3400 is a 24X(single sensor) system. 06 is showing the same. i don't have any info on the 07 though.

car-part.com is showing 05 and 06 engines as being interchangable, but not 07.

[Crracing]

alldata says: 2005 equinox 3400 is a 24X(single sensor) system. 06 is showing the same. i don't have any info on the 07 though.

car-part.com is showing 05 and 06 engines as being interchangable, but not 07.

All the connectors pluged up the same i wonder what is not interchangeable? hopefully I can fix it since i all ready have the motor in the car.

[caffeine]

I wonder if they switched to a 58x wheel in 07?

[caffeine]

Is it possible to plug in the PCM from the 07 to see if it fires? Or do the 07s use a different PCM?

[Guest]

As I said the actual trigger wheel for the crank trigger is different, 56x as opposed to 7x.

Here is a comparison of the two different trigger wheels.





And a little different perspective, the outside is what is found in the late 3400 and all 3500s, the blue outline is what is found in the genII to the genIII 660s.

As you can see, they are quite different:



Some more information: http://60degreev6.com/forum/showthre...or-demystified

You have 2 options:

1) Pull the engine and swap the crank or swap for a proper year 3400.

2) get an external crank trigger kit for the earlier DIS system. They are usually sold for using 3500s with the older EFI system.

[robertisaar]

I wonder if they switched to a 58x wheel in 07?

very likely. the 06-earlier seems to use the same reluctor as the non-VVT 3500s, i imagine 07 could have went with the gen4 reluctor to keep everything consistent throughout the OHV 60V6 lineup.

Is it possible to plug in the PCM from the 07 to see if it fires? Or do the 07s use a different PCM?

i imagine security-related issues could pop up from this.....

[Guest]

very likely. the 06-earlier seems to use the same reluctor as the non-VVT 3500s, i imagine 07 could have went with the gen4 reluctor to keep everything consistent throughout the OHV 60V6 lineup.

I had thought that it was earlier than '07 that the change was made, but it seems to be '07. Probably a bit of confusion because the 3500 that was released previously uses that later trigger set-up.

i imagine security-related issues could pop up from this.....

That would be the least of the issues. The PCM that interfaces with the later ignition system fires the coils directly. That is the crank sensor is connected directly to the PCM and then the PCM is connected to the coil pack. So the simple answer here is that the PCMs are quite different.

[caffeine]

According to Alldata the 05 Equinox uses a 24x reluctor and the newer style PCM fired ignition coils. From other sources we know the 05-06 3500s use a 58x (LS-style) reluctor with the same PCM fired coils. Also according to Alldata the 08 Equinox 3.4 uses a 58x reluctor. I think its safe to say that the OP got a 58x engine.

None of the equinoxes use the older 7x ignition module fired coils. But it seems there were two different reluctors that came in the Equinox 3.4s depending on the year.

[caffeine]

Further research on Alldata indicated that the Equinox 24x reluctor is different from the earlier balancer mounted 24x "interrupter ring". The equinox uses 24 notches of varying lengths while the earlier 3400s use a ring with "24 evenly spaced blades"

[Guest]

Ok, so I wasn't losing my mind then, there have just been two changes in the reluctor ring design away from the 7x reluctor.

Then it seems like the only option here is to swap engine with a proper year engine, or swap cranks.