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Author Topic: Help 4.0 throttle body swap questions  (Read 950 times)

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Offline 95yjester

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Help 4.0 throttle body swap questions
« on: February 26, 2009, 04:53:24 PM »
Okay did the swap used the sensors from the 2.5l put it all back together fired it up and it screams to 4.5-5k and stays there scary.


Help. please help.
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95 YJ 2.5l, 5sp 2.5" lift, 32's on soft 8's Flat Olive Paint, smittybilt front & rear bumper.  Lot's of mods to come lot's of monee to go.

Offline Bounty Hunter

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Re: Help 4.0 throttle body swap questions
« Reply #1 on: February 26, 2009, 05:44:45 PM »
Likely a vacuum leak.  Double check everything and make sure the TB and IAC are clean.
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Offline 95yjester

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Re: Help 4.0 throttle body swap questions
« Reply #2 on: February 26, 2009, 06:32:30 PM »
When i swapped the tps it seemed dirty so i sprayed it with carb cleaner before i put it in could that have screwed something up? also on the IAC sensor I didn't swap the housing just the sensor does that matter? any help greatly appreciated.
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95 YJ 2.5l, 5sp 2.5" lift, 32's on soft 8's Flat Olive Paint, smittybilt front & rear bumper.  Lot's of mods to come lot's of monee to go.

Offline 95yjester

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Re: Help 4.0 throttle body swap questions
« Reply #3 on: February 28, 2009, 03:13:31 PM »
Problem fixed needed to swap the IAC housing from the 2.5. it's all better know, actually still pulls around 65 (on flat ground that is) next stop #19 injectors and taurus fan.

Any input on a higher amp alternator swap.

 :clap:
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95 YJ 2.5l, 5sp 2.5" lift, 32's on soft 8's Flat Olive Paint, smittybilt front & rear bumper.  Lot's of mods to come lot's of monee to go.

Offline Bounty Hunter

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Re: Help 4.0 throttle body swap questions
« Reply #4 on: February 28, 2009, 04:34:20 PM »
Quote from: 95yjester on February 28, 2009, 03:13:31 PM
Any input on a higher amp alternator swap.

 :clap:
http://4bangerjp.com/forums/index.php/topic,400.0.html  I use the 136A as an easy to find bolt-in.
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