using heater
#1
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using heater
I have just bought my first Jeep after restoring and selling a Bronco II. 1989 XJ 4.0 So after reading through most of the threads I have not found an answer to a simple question. Currently at idle I am showing 14 on alternator output. When using heater OR A/C my voltage drops to 13 is this a problem with the blower, or normal operating readings?
This Cherokee had been sitting for almost 5 years and started once or twice a year. I have it in pretty good running condition {hate saying that its a jinx} after a month slowly waking it back up.
This Cherokee had been sitting for almost 5 years and started once or twice a year. I have it in pretty good running condition {hate saying that its a jinx} after a month slowly waking it back up.
Last edited by gabriellelm; 04-13-2013 at 11:37 AM.
#3
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Sounds like you've done a good job so far. Dropping from 14 to 13 is normal when electrical accessories are turned on.
#4
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Thank you cruiser54, If I turn on the headlights emer. blinkers etc it stays @ 14, just the heater/AC drops the output.
I had to start with the leaky injectors, only replaced one with OEM and replaced all the rings. found the pressure was still so low. Replaced the in tank fuel pump { didnt have to drop the tank in this year model, access through back of tank}and in line filter. When I pulled the pump out it disintegrated in front of me, I still dont know where the filter went.
Then on to brakes I had to stand up to get them to stop. New master , adjustment still seems like it takes way too much pressure to apply them.
Took a weeks course here on this forum on the RENIX system. ty for the information.
I had to start with the leaky injectors, only replaced one with OEM and replaced all the rings. found the pressure was still so low. Replaced the in tank fuel pump { didnt have to drop the tank in this year model, access through back of tank}and in line filter. When I pulled the pump out it disintegrated in front of me, I still dont know where the filter went.
Then on to brakes I had to stand up to get them to stop. New master , adjustment still seems like it takes way too much pressure to apply them.
Took a weeks course here on this forum on the RENIX system. ty for the information.
Last edited by gabriellelm; 04-13-2013 at 01:36 PM.
#5
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Year: 1992 Cherokee Sport
Engine: Bone-Stock 242
Thank you cruiser54, If I turn on the headlights emer. blinkers etc it stays @ 14, just the heater/AC drops the output.
I had to start with the leaky injectors, only replaced one with OEM and replaced all the rings. found the pressure was still so low. Replaced the in tank fuel pump { didnt have to drop the tank in this year model, access through back of tank}and in line filter. When I pulled the pump out it disintegrated in front of me, I still dont know where the filter went.
Then on to breaks I had to stand up to get them to stop. New master , adjustment still seems like it takes way too much pressure to apply them.
Took a weeks course here on this forum on the RENIX system. ty for the information.
I had to start with the leaky injectors, only replaced one with OEM and replaced all the rings. found the pressure was still so low. Replaced the in tank fuel pump { didnt have to drop the tank in this year model, access through back of tank}and in line filter. When I pulled the pump out it disintegrated in front of me, I still dont know where the filter went.
Then on to breaks I had to stand up to get them to stop. New master , adjustment still seems like it takes way too much pressure to apply them.
Took a weeks course here on this forum on the RENIX system. ty for the information.
And actually on that note, if i remember correctly the '89 has the Bendix 9 system which is notorious for going out. I'll look into this and make sure unless someone wants to add on for me.
Anyways, looks good so far!
#6
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Year: 1992 Cherokee Sport
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I was right about the Bendix9 part, apparently there's a recall that'll get it fixed for you.
https://www.cherokeeforum.com/f59/be...er-free-89523/
https://www.cherokeeforum.com/f59/be...er-free-89523/
#7
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New booster too, I have almost forgotten what I have done over the 15 days. Where did I misspell brakes? { ty edit} ur right a rookie mistake on my part. TY I stumbled upon some recall notices then couldnt find my bookmark I am all over this ty again 1976Mustang.
Last edited by gabriellelm; 04-13-2013 at 01:46 PM.
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#8
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Year: 1992 Cherokee Sport
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No problem. The issue with the Bendix9 system is it used an electric pump to create vacuum for the booster, and said pump likes to crap out. Good luck!
#9
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Year: 1990
Model: Cherokee
Engine: 4.0
Could just be the single diaphragm booster that your not used to It SUCKS. You could try putting in a newer dual diaphragm booster from a 96' XJ or later. That's my plan... eventually.
#10
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Year: 1992 Cherokee Sport
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Or for even more power, from a Grand Cherokee... Can't remember which years worked though. I'm gonna be doing this soon since i just studied brakes in college
#12
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right now...no codes at all...shhh heres the diagnostic write up for when I bring it into an authorized dealer http://www.justanswer.com/chrysler/2...l-702-the.html
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