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Unread 01-20-2013, 01:43 PM   #31
svshaw82
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1989 XJ Cherokee 
 
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What do you mean cascade down with no low spots? Its a direct shot to the TB and same length as old one. Im confused... lol!

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Unread 01-20-2013, 01:48 PM   #32
cruiser54
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1990 MJ Comanche 
 
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Quote:
Originally Posted by svshaw82 View Post
What do you mean cascade down with no low spots? Its a direct shot to the TB and same length as old one. Im confused... lol!
The factory used hard piping for a reason. The piping has to run downhill from the MAP with no low spots like you can get with flexible vacuum hose. Fuel can collect in the low spot effectively blocking vacuum from reaching the MAP.
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If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

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Unread 01-21-2013, 01:06 AM   #33
svshaw82
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1989 XJ Cherokee 
 
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Location: Escondido, CA
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Ok, make sence. Thats interesting. Do you happen to know a part number for a replacement? I know its working somewhat because while the engine is running I can pinch the hose and it dies.

Just finished a few major things tonight...
Fresh oil change
Transmission Filter plus oil change
New fan clutch (old one was bad)
New temp gauge (old one died)
New ground #6 stranded from firewall to fuel rail bolt.

So far she starts right up, and shifting is smooth. Oil pressure is about 35psi to 40psi idle. WOT its around 50psi to 60psi. New fan clutch installed, I hope this starts to get my temp normalized! She ran cold tonight on my 4 block test drive. I dont think she went over 190 degrees. Then again it is only 46 degress outside right now. Will have to see how she does one a warmer day.
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Unread 02-12-2013, 05:30 PM   #34
svshaw82
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1989 XJ Cherokee 
 
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Location: Escondido, CA
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So temps are still low... She is still running really rich. Now the stumble is getting worse. Like a dead cylinder. It's happening almost every startup and goes away while driving. Damn near all my ignition components are brand new.


I'm lost guys :-(
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Unread 02-12-2013, 08:02 PM   #35
cruiser54
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I wonder if your MAP sensor is possibly bad.
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Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 02-12-2013, 09:17 PM   #36
svshaw82
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How can I test it? Use my ohm meter?
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Unread 02-13-2013, 04:55 AM   #37
cruiser54
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Quote:
Originally Posted by svshaw82 View Post
How can I test it? Use my ohm meter?
Voltmeter. I don't have the testing procedure at my fingertips.
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Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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