Anyone use these guys for replacement engines?

[CactusJacked]

Trouble's my middle name, but I tend to just use the T. to keep it on the sly!
I thought I had mentioned the nylons filter earlier. It helps to catch any chunks of crud from getting into the passages of the radiator and heater core. You may be surprised to see what you catch.

 

[CactusJacked]

Anyone know anything about the rear window? Mine won't close unless I SLAM it HARD! and I mean real hard. So hard it hurts my shoulder to do it. Is there anything weird about the latch I should know before I try to adjust it if I can.

With the window open, take a look see down inside the latch area. You'll see a stud and nut on either side of the latch mechanism. If those worked loose, the latch would slide forward. You can loosen and adjust the latch back so that it will latch easier, but to work on it, you'll need to remove the inner panel.

 

[profdlp]

...I thought I had mentioned the nylons filter earlier...You may be surprised to see what you catch.

That's what I tell all the sailors down at the wharf. :gay:

(Sorry, 02redKJ. I did not mean to mess up your thread. But when they tee it up like that...) :icon_confused: :laughing1:

 

[02redKJ]

LOL That's OK Prof. This is a conversation. A little light hearted humor never hurt anyone. And yes, it was a sweet tee, and you hit the sweet spot. Seeing as though the pantyhose were off, the sweet spot was right out in the open for anyone to swing at.

Back to bad news though...
I just got back from bible study(Seriously!), and on the way there the CEL came on again. This is getting really frustrating.

 

[CactusJacked]

Back to bad news though...
I just got back from bible study(Seriously!), and on the way there the CEL came on again. This is getting really frustrating.

I'm getting a vibe. Here it comes....here it comes....got it....a PO303 code?

 

[02redKJ]

I'm getting a vibe. Here it comes....here it comes....got it....a PO303 code?

That's what I was thinking! We'll see...

 

[02redKJ]

Surprise! It was P0303 error.

 

[CactusJacked]

Not really all that surprised. Did they tell you what they "fixed" the last time to get rid of the 303 error?

 

[02redKJ]

Just the slight adjustment of the idle. Tell you the truth, He is stumped. I think he wants to change the ECU but they are telling him no. More $$$. I told him what all of my research and you guys have told me. He is trying everything. I respect a man that tells me he don't know something. Rather than tell me he knows while lying about it.

 

[CactusJacked]

Did you say earlier the the guy either swapped or replaced coil #3? Has he tried swapping fuel injectors yet?

 

[tjkj2002]

Just the slight adjustment of the idle. Tell you the truth, He is stumped. I think he wants to change the ECU but they are telling him no. More $$$. I told him what all of my research and you guys have told me. He is trying everything. I respect a man that tells me he don't know something. Rather than tell me he knows while lying about it.

Had one a few months ago with a constant P0303 code,the customer was tired of the other shop jerking him around and spotted my KJ so stopped in.Turned out he had a bad cat but his was a '07.

 

[02redKJ]

Yes he swapped plugs, and then he swapped the injectors. The code didn't follow the part. It stayed #3.

 

[CactusJacked]

It sounds like your guy may be suspecting a lean fuel misfire, as opposed to an ignition misfire. A lean misfire is more likely to occur at idle, since the engine wants a richer air/fuel mix for a smooth idle. That may be the case, since speeding up the idle did make the error go away for a noticeably longer time than before. That, or it was just dumb (short lived) luck. Does he have the equipment to check the fuel trim values? He should. Other things to check would be the EGR valve, MAF sensor, even for a clogged fuel filter or weak fuel pump (check fuel pressure).

 

[tjkj2002]

Other things to check would be the EGR valve, MAF sensor, even for a clogged fuel filter or weak fuel pump (check fuel pressure).

No EGR or MAF on a '02 3.7 and a weak fuel pump(or clogged filter) will cause no issues at idle but will effect all cylinders under heavy load and will not really feel like a misfire or be recorded as one for just one cylinder.

 

[02redKJ]

OK So what else would cause it besides the ECU? Cherrie mentioned the Cat and O2 sensor. Has a new cat on that side and the other one was inspected while off during the engine swap, even by me. It looked normal, only a very small amount of clogged pores. Maybe 2 to 3%. It looked like it had been changed recently. The BIG cat was also looked at during the engine swap. I asked how it looked and he said it looked good. I mentioned the O2 sensor and he said he would check that too. It doesn't feel starved. Matter of fact, it feels very strong on acceleration. Stronger than it ever did. Even before the knock started.

 

[tjkj2002]

OK So what else would cause it besides the ECU? Cherrie mentioned the Cat and O2 sensor. Has a new cat on that side and the other one was inspected while off during the engine swap, even by me. It looked normal, only a very small amount of clogged pores. Maybe 2 to 3%. It looked like it had been changed recently. The BIG cat was also looked at during the engine swap. I asked how it looked and he said it looked good. I mentioned the O2 sensor and he said he would check that too. It doesn't feel starved. Matter of fact, it feels very strong on acceleration. Stronger than it ever did. Even before the knock started.

So 1 cat was replaced and the other primary cat is OE?


If that newer cat is aftermarket that could be the issue.never mix and match OE cats with aftermarket cats,aftermarket cats are cheaper due to not being as efficient as OE cats and can/will cause issues if mixed and matched with OE cats.That 3rd cat is not monitored and is a "catch all" to give the '02 KJ a LEV rating.


A simple check on live data can verify a bad O2 sensor but the MIL will give a bad O2 sensor code also.




Another issue can be low compression on cylinder #3 or a issue in the valve train.

 

[02redKJ]

Cat that was replaced before either of us got it is anyone's guess about where it came from. I do not know where they got the newest cat. he put it on. With the other engine, I ran it 500 miles after the cat was replaced. It never had this error code. This code only started after the new engine was installed.

He did compression check too. I forgot to tell you. He said all 6 cylinders are between 175 and 179PSI. What do the specs say abut those numbers? I forgot my book in the Jeep.

 

[tjkj2002]

Cat that was replaced before either of us got it is anyone's guess about where it came from. I do not know where they got the newest cat. he put it on. With the other engine, I ran it 500 miles after the cat was replaced. It never had this error code. This code only started after the new engine was installed.

He did compression check too. I forgot to tell you. He said all 6 cylinders are between 175 and 179PSI. What do the specs say abut those numbers? I forgot my book in the Jeep.

Depending on what happened to the engine it can ruin a cat(s).The compression is right on par but did he do a leak down test? And was the compression test run on a cold or hot engine?

 

[02redKJ]

Engine hadn't failed completely. Had rounded out wrist pins. I caught it early. We actually looked at all three cats to compare the new one with the one he hadn't replaced, which is why we determined that the one he hadn't replaced must have been recently replaced, because it looked so good.

 

[CactusJacked]

How does a multi-cylinder cat converter trip a cylinder specific misfire?