What if you turned the key on, got out, and pressed the Schrader valve on the fuel rail - with the key on, shouldn't the pump squirt fuel until you let go of the valve??

 

Yes you would get fuel out of the valve. I am not really sure if he means no fuel is getting to the plugs or no fuel is getting to the fuel rail.

 

what do you mean the cps are dif? i am using one for my 98. and i am getting no fuel to the rail.

 

No the CPS is the same. If you are getting no fuel at the rail it is a bad pump, bad relay or no fuel in the tank.

 

haven't gotten anywhere yet? If I was you I'd use the same cps that was on the engine you put in and the same computer from the engine you put in, did you mix ANY sensors/computer components? If you did then definitely consider swapping. If everything worked before you put in the new engine it should work. freegdr said something a while ago, it's easy to pinch a fuel line when installing a cumbersome engine, did you check that?

 

I think this guy is dead right. The fuel cut-off when the CPS won't allow spark is EXACTLY the kind of thing OEM engineers design into vehicles.

Go to the parts store....get a CPS for BOTH engines. Use the one that matches the computer first, then the other one. If this does not work, don't freak, just swap the computer and try again.

And go out on that other XJ list - I can't remember the name - and post a question there, too. There might just be somebody that has experienced the exact same problem.

 

Let me rephrase this the Flywheel for a 95 and 98 are the same so if you are using the CPS from a 98 you should have no problem. If you are using a CPS from the 95 it could be a problem. From what I understand from your posts is that the wiring harness and every single sensor is from the 98 correct? So the only thing from the 95 is the block and head right?

 

A also have a 98 i just pulled the plug on the CPS and still had fuel pressure.

 

This: http://www.go.jeep-xj.info/HowtoCPSchange.htm

is where I'd start. I feel like printing it and pinning it to the shop wall...I'm sure I'll be in the same boat as you one day.

BTW, this guy says there are three differnet PLUGS but it appears the CPS itself is the same. Since it is molded to the plug, you do have to get the correct one. When I am in doubt, I buy everything and take back what I don't need.

No matter what the contrary arguments might be, I'd start with the CPS. Then if that doesn't work, report back and lets see what else people come up with.

 

You can replace the CPS all day but that still won't fix the fact that he has no fuel pressure. Like I said i pulled the plug on the CPS on my 98 and still get pressure at the fuel rail. If fuel is not making it to the fuel rail he can replace every sensor he wants but it still won't start. Did you try spraying starter fluid into your intake to see if it would fire up that way?

 

His engine is 1995 though, try reseting the computer and keep the same cps with the same computer. If you mixed any sensor's I'd swap them. Maybe the cps has the position wrong from computer memory

 

yeah i tried starter fluid but not even a hint of wanting to start

 

the only thing from the 95 is the fly wheel clutch and motor.

 

Alright so definitely no spark. I know this will probably take a while but could you also post everything you have tried so far. Here is a list of everything I can think of that has to do with Ignition and Fuel: ASD Relay, Cam Positioning Sensor, Crank Positioning Sensor, Injectors(check for pulse), Fuel Pump, Fuel Pump Relay, Idle Air Control, Ignition Coil, PCM, Throttle Positioning Sensor and Neutral Safety Switch. If you need test procedures for anything let me know I will post them. Also a lot of the time when I pull a fuel line i usually put a cap on it or plug it so I don't get fuel all over the place, could you have a plugged line, also pull the cap off the distributor and double check to see if your rotor is turning?

 

Have not heard an update - have you got this jeep running yet?