95 4.0 YJ failed Emissions. - Page 2 - JeepForum.com
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Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > 95 4.0 YJ failed Emissions.

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Unread 04-11-2013, 06:33 PM   #16
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,608
that is high. since it isn't changing when you disconnect the vacuum check to make sure there is vacuum on the line going to the regulator. If there it's then you have a suspect regulator. I am surprised out it's high. That is counter intuitive to your issue but it is wrong.

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Unread 04-11-2013, 06:45 PM   #17
Robob69
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1995 YJ Wrangler 
 
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There is plenty of vacuum for sure. I ordered a new regulator. Will be in tomorrow. Can we eliminate ecu and injectors? Or are they still suspect?
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Unread 04-11-2013, 06:48 PM   #18
Siva283
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Location: Falling Waters, WV
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What's the current condition of the plugs wires cap and rotor? Also did you reset the ecu after each change. Especially the o2 sensor.

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1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

[QUOTE=Magnum;14117863] I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim[/QUOTE]

[QUOTE=ldso;16498409]. It started with a $200 axle, and a few thousand dollars later I was done :)[/QUOTE]

[QUOTE=Luuca;16122017]diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...[/QUOTE]

[QUOTE=Overhead;17658665]this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.[/QUOTE]
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Unread 04-11-2013, 07:11 PM   #19
Robob69
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1995 YJ Wrangler 
 
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That's one thing they did not do was reset the ECU .. plugs rotor and cap were changed last year when it failed when I bought it.. then it was the cat converter.
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Unread 04-11-2013, 07:41 PM   #20
Siva283
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1995 YJ Wrangler 
 
Join Date: May 2011
Location: Falling Waters, WV
Posts: 3,698
Might be worth checking the plugs anywah. Atleast it doesn't cost anything.

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__________________
1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

[QUOTE=Magnum;14117863] I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim[/QUOTE]

[QUOTE=ldso;16498409]. It started with a $200 axle, and a few thousand dollars later I was done :)[/QUOTE]

[QUOTE=Luuca;16122017]diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...[/QUOTE]

[QUOTE=Overhead;17658665]this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.[/QUOTE]
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Unread 04-11-2013, 08:33 PM   #21
Que89YJ
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1989 YJ Wrangler 
 
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Reset its necessary after any sensor replacements. Good catch.
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Unread 04-11-2013, 09:23 PM   #22
superj
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1987 YJ Wrangler 
 
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So are you saying a 95 4.0 yj could possibly be coming up for sale in the near future?
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Unread 04-11-2013, 10:14 PM   #23
Robob69
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Hahahaha.... I will so register it in another county without emissions. .. Good try..
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Unread 04-15-2013, 07:11 AM   #24
Que89YJ
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1989 YJ Wrangler 
 
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Did you get it figured out?
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Unread 04-15-2013, 08:09 AM   #25
Robob69
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1995 YJ Wrangler 
 
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No... Have not had time. Replaced the fuel regulator yesterday then my freaking ignition lock jacked up and can't start it now until the new lock assy comes it sometime today...
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Unread 05-12-2013, 01:06 PM   #26
bill8bud
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Any updates on this I am a similar issue.
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Unread 05-12-2013, 02:02 PM   #27
Robob69
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1995 YJ Wrangler 
 
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Sorry.... I passed and forgot to update.....


I changed my fuel injectors and cleaned the throttle body and it passed with flying colors.

Runs perfect and has huge amounts of get up and go now,,

Amazing what 4 hole injectors can do...
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