Question about 4.0 intake/head swap

[thunderlizard66]

So I bought this CJ and supposedly it has a 4.0 swap done. It wasn't running, fuel pump issue. I had seen it running previously so I know it ran, However after reading the forums and searching the web I went looking and found the following:

1. No VSS, it just has the speedo cable.
2. No CPS mounted to the bell-housing or harmonic balancer
3. EGR solenoid and the ballast resistor are not hooked up

So I'm pretty sure this is a renix, because I found the Bendix solenoid panel on the fender and the valve cover doesn't say 4.0.

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[thunderlizard66]

Oh I forgot my questions,

Is this most likely a 4.0 head intake swap?

Can a 4.0 swap be done with out hooking up the other items?


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[tinman]

Definitely a renix intake, but I'm thinking it was a complete 4.0 swap based on the pulley system. Also, I believe the VSS on those systems was right behind the speedometer, before the cable goes through the firewall.

 

[thunderlizard66]

Thanks Tinman I'll check there tomorrow . I had a Cherokee in college, but this is my first real jeep. Bonus one of the PO converted the AC pump to an on board compressor, not sure how well it works.


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[Petescj]

Is it an automatic? If so the TF999 Transmission from those models with the FI 4.0 had a provision in the bell housing for the CPS.

 

[thunderlizard66]

Pete it's a standard and there is no cut-out for the CPS. It's seems weird, that it's (the CPS) isn't around.
They guy I got it from bought it in May and drove it until December.


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[thunderlizard66]

So I looked further and found the CPS it's almost i the very top of the bell housing. It's a T-5 tranny


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[Neuner]

So I looked further and found the CPS it's almost i the very top of the bell housing. It's a T-5 tranny


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Beat me to it. Yes the CPS is in a PITA location on the housings.

If you've swapped out the fuel pump and filter and still have issues, you may try burping the fuel line/fuel rail. I had to do that to my swap after installing the fuel pump.

The CPS can be sensitive, especially on the modified bellhousing versions. My Hesco had to be within 0.025. Without it working correctly, it won't fire.

Get the intake casting number which may help you identify which year/version it is.

 

[Bent]

VSS might be at the Dana 300 speedometer cable port. If it were a 4.0 head on a AMC 258 i6 / 4.2l it would have a block off plate where the mechanical fuel pump should be.

 

[thunderlizard66]

Thanks for the advice everyone. It's been about 10 years since I've worked on cars/trucks so I'm a little rusty.


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