Recent content by jeddins

Original EGR had an intermittent leak. I tested it by blocking off the outlet (to the intake side) and blowing into the inlet. This closes the valve inside that allows the vacuum to move the diaphragm. I could pull 15" but it would slowly bleed off. I sprayed some carb cleaner up the hole and...

http://books.google.com/books?id=QuQDAAAAMBAJ&lpg=PA149&ots=6nDgaJpyPO&dq=troubleshooting%20positive%20back%20pressure%20EGR%20valve&pg=PA149#v=onepage&q=&f=false Just found this article. Pretty good.

I did replace the O2 about a year ago. Broke the old one off by accident pulling off the exhaust. I'll have to check to make sure it's the right one. I usually try to get AC delco or molar replacements but since this wasn't planned I may have run to auto zone for it. I'm pretty sure it's a three...

where is the timing tab?

okay thanks for the note about the timing. Is there any way to check it to verify the timing? Maybe the crank sensor is loose. If it's working fine then I'm not inclined to modify anything. It should pass with the stock equipment working since it's a bone stock engine. btw manually opening the...

2008 mileage 220043 15 mph 1656RPM 14.38%CO2 0.57%O2 78ppmHC 0.04%CO 831PPM_NO 25 mph 1582RPM 14.60%CO2 0.23%O2 38ppmHC 0.01%CO 551PPM_NO 2010 mileage 223142 15 mph 1759RPM 13.80%CO2 1.20%O2 17ppmHC 0.00%CO 1500PPM_NO 25 mph 1385RPM 13.90%CO2 1.00%O2 18ppmHC 0.00%CO 1684PPM_NO but it...

this is the dumbest question ever, but how do you set the base timing on the 4.0 renix system? I'm familiar with the GM and Ford systems where you unplug the spout or another lead to disable the computer control for base timing settings but I can't find anything about this in my lame Chilton. I...

They won't hold vacuum. Must have a air source going into the seat to simulate backpressure. Still doable, but nobody in town stocks them. Found it online though. hard to imagine that this part is that rare (it's just a standard looking GM EGR valve). Just in case anybody is curious and they...

Just a quick note on positive backpressure EGR valves. They are designed to only open with backpressure in the exhaust (the engine under load). They will not open at idle. The system is designed that way. There is a port in the diaphragm that is closed with exhaust backpressure. When the port is...

didn't mention, it's a 1987 and it doesn't have the vacuum transducer like 88 and up RENIX

Just failed a smog test, Passed the last one about 3000 miles ago. The Jeep doesn't see much street duty. The motor is stock. Since the last smog check: Recent oil change New 02 sensor New TPS sensor (set closed position voltage at 0.85V) New Cat New Dynomax exhaust 4.89 gears Seems like a...

that's my thought too so far. I may temporarily weld tabs to the weld to slide hammer on. I'm going to pull it in the garage and set it on jack stands as high as I can but I don't know if I can get it high enough to use a good slide hammer. I wish I had sometihng on the garage floor to anchor to...

I just finished the dusy-ersham trail in my 87 xj. It was a hell of a ride with 31s and only 4.5" of lift but I made it, even after it dumped a ton of snow on us. I came down pretty hard on the passenger side rock rails several times and it eventually pushed up my pinch weld. I'm using the...

Okay, given this car has had a history of overheating before I changed tanks I still need to do a leakdown and pressure check. BUT- I did have a vented cap on it (??? it was the cap I received w/ the tank and never checked). I thought they were all vented, i.e. they all flow back from the...

Yeah, I'm sort of not willing to admit it but that is what I am thinking. Not having a temp gauge takes away some good info, but if I trust the pressure is good to 16 psi that puts the boiling point at 250-260 or so. Probing around gives 190-220. Shouldn't be boiling at all. I'm still going to...