chicofuentes0224

That thump in the back is my exaust hitting the transmission crossmember. Maybe the tran. mount is out?

Well, changed the plugs(ngk's) wires, cap and rotor. And yes eagle, I changed the fuel filter today and the crap coming out of it was dirty. The cap looked shot inside. You couldn't tell it was brass anymore. The plugs were all covered in black soot except number 4. It was white. Do you think the injector is running lean or sticking? Anyway the truck runs a bit better but it did not solve the problem. I'm still feeling a shudder after 2000 rpm. My mechanic friend said ask you guys if you think the CPS could be causing this problem. That's my next guess. Or do you think I should change the MAP sensor or EGR next? Everybody please chime in with a guess :D

Nothing yet. I'm gonna change the plugs first and the fuel filter tosee if that fixes it. If not I'll keep searching. Maybe the map or egr next?

fuel pressure is good at the rail. I'm gonna change the plugs and the fuel filter now.

Yeah nI'm going to check the pressure now. Let you know what happens then.

Well it's gotten worse. It's stuttering at anything over 20 mph

Yes sir I think so.

Never mind. Found the post :D

ok i know where the egr is . how do i check it.

I haven't personally changed it yet,but right before I bought it, it looked like a tune up was done including the fuel filter. I just ran the truck without that hose connected to the valve cover and it's still stuttering around 2000 rpm's and 35 mph. I had my buddy check the tps again and it's on spec. I guess I'm going to get the fuel pressure checked tommorow and maybe change that map sensor.

oh where to start. I bought this comanche in june and am tryin to nurse it back to health. It seems to have a hundred problems but let's start with this one. I changed the ccv tubing coming out of the valve cover to try and slow that oil leak into the air box. It worked. Sort of. Thetruck was running good for a little and then after it warmed up it would have trouble at about 2000 rpm and 35 mph(stuttering) shifting. oh I forgot to tell you. It's 1988 4.0 A/T. Well after reading 643 posts I decided to start by changing the TPS. I had a friend who is a professional vw mechanic come and bring his little thousand dollar machine to check the volts coming out and going in of the TPS. He set it to the spec you guys wrote in some posts on the furum. Well I drove it for about 20 miles and it worked great. I thought the problem was solved. Then it started stuttering again. Kinda like it wasn't getting enough fuel. After rereading 643 posts I decided to change th O2 sensor. That was rusted and black as in burnt so I suppose it was the original. Drove it again but I'm still having the same problem. So I call my buddy and he says check the fuel pressure. What do i DO THIS WITH. On a whim I decide to open the hood up again and I notice that the grommet on the back of the valve cover is once again leaking oil. I disconnect the line at the grommet, let it hang over the valve cover and took it for for a drive. The truck seems to run a lot better. It almost shifts where it's supposed to and doesn't seem to stutter at all. So now i figure that this is an air problem. Now Here's my questions. 1) What should I look for next? 2) Should I try and get the valve cover off and clean underneath to try and solve this problem so air actually gets to the intake instead of oil. 3)would it hurt anything if I just plugged the hole on the back of the valve cover and put some kind of breather or filter on the small valve going in to the intake? 4) Should I go ahead and change the fuel pump? and what else should I change with the fuel system since I'm basically now starting to rebuild the whole truck. Thanks for any help you guys can give me.

Thanks Pete

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What am I doing wrong? :roll:

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Quadratech sells a new carpet for like $170 I think.

Ebay has some reman engines for 1200 to 1600. Look under "jeep 4.o engine" Let me know what you end up doing because mine feels like it's on it's last legs.

I jusy checked jasper. They want 2230.00 for a 4.0 $315 for a deposit :eek:

no but here's the wierd thing. I just dissconnected the ccv hose off the back. The smaller side connected On top of the exaust manifold. Not only does the truck idle and run better. It quit making that thump, and it shifts a lot better. :nuts:

Can't be. I took care of her years ago and I just bought the mj a couple months ago.

Man I love you guys. Such comedians! :D . So what tools do I need and where do I put the gear oil? Next if the gears are screwed should I get new ones or a new axle?

what's a squirell

Yep when I'm drivin at about 35mph and with the rpm's at about 2000 I sometimes hear a thump. Do you guys think It's a problem with the axle. It's coming from behind me somewhere. 1988 I6 automatic. Thanxs guys