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Old 09-01-2010, 08:46 PM   #61
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Location: Nankipoo, Tn
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Originally Posted by rrich View Post
Did it run before? If it did, give them the part number of your old one.

Explain what you have to them. They may need the VIN of yours, or possibly the VIN of the one the engine came out of.

You might end up at the dealer where they can program it for what you have if the 95 and 97 are much different.

That's the problem with a hybrid.
I don't think it was running with this engine. It looks like someone bought a 95 engine from salvage yard, got it half way in and stopped. And then pushed it into a lake! LOL

I have changed the entire wiring harness (all three!)and ALL electrical switches , the engine has been completly redone with new pistons and the works. I did a comp check and Im getting 150psi on all 4

I called a couple mech I know and they say the 95 and 97 had some little diff. But none they knew of that would matter on the ecu. One mech said the 95 had no vac assist injection and the 97 did. and that was all he could think of.

On the inj rail , I have a vac assist rail and non assist single inlet rail, could i get either to work? and which one is best? and are the inj the same?

So its sounding like a 95 ECU.


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Old 09-02-2010, 12:19 AM   #62

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So, I guess this Jeep isn't going to make the TB trip this weekend

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Old 09-02-2010, 07:15 PM   #63
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Nope its not but the JK is.

The verdict is still out on what ECU to get. I had another mech tell me today to get the 97. IDK. that just does not seem right to me because the engine has the sensors. The only thing that is connected to the ECU that is 97 would be the cluster, and the air bag module. Both are multi year
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Old 09-09-2010, 02:51 PM   #64
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Before I order the ECU, I got a code scanner from autozone. It shows no codes. Being it has not run that may not mean anything.

Question , should a no start condition show on the scanner?
What should I be looking for in the scanner?

I guess this is the last thing to try on this engine. If this does not work then a wasted ECU. Who knows I might give up and go the v8 dirrection LOL
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Old 09-09-2010, 03:46 PM   #65
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Originally Posted by TOFIAM View Post
Sorry for irking some people, didn't mean too - but as an electrical engineer with well over 30 years experience in aerospace I stand by what I said, use wheel bearing grease.

Save the silicone stuff for spark plug boots and other high temp applications
or white grease
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Old 09-10-2010, 10:35 PM   #66
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Your problem

Originally Posted by lambdatoys View Post
So I've read through a few of the other threads about jeeps not starting, but haven't solved my problem yet.

I parked the jeep a week ago, and when I went to start it today it just keeps turning over trying to start, but won't.

The other threads suggested swapping the horn relay with the fuel relay, which I did and both worked. Then I read that I should test to see if I'm getting spark, which it does not appear that I am. I replaced the coil but it still won't start. Next I read that the CPS (on the transmission bell housing) was probably bad, so I replaced that too, but it still won't start.

Recently I replaced the cap and rotor, wires and plugs. There is gas in it, though not much. And it was running perfectly before I parked it last week.

The only previous problem I had was I hit a large bump in the road and the engine died, but when I pressed the clutch in and out it came back to life, leaving the CEL on with the codes (four) PO201 - PO204 which are injector malfunction codes for each cylinder. I reset the codes and everything was fine for two weeks or so, until now.

Any ideas?? I'm
you need to check the wireing harness at the end of the injector wires , did you see with your cap off if the rotor was revolving ? do you get a spark ?doe's your fuel rail have pressure ?
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Old 09-10-2010, 10:38 PM   #67
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also check your ecm ground

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