4 cyl. starts fine, idles fine for a while, idles erratic and dies. - Jeep Wrangler Forum

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Old 09-25-2013, 06:45 PM   #1
Join Date: Sep 2013
Posts: 2
4 cyl. starts fine, idles fine for a while, idles erratic and dies.

95 4cyl. Starts up fine every time. Will idle sometimes a few minutes, sometimes a few seconds, then idle erratically. Almost dies out, then catches itself and idles high, back down low, and will eventually stall out. Checked the fuel pressure using gauge right where it needs to be. 39 psi with vac line detached and 31 or so with it attached.

New: IAC, TPS, Fuel pump, dist cap, rotor, plugs, wires.

Not sure where to go from here. Doesn't appear to have any vacuum leaks that I can find.

Any help is appreciated thanks.

dirtchicken is offline   Quote
Old 09-25-2013, 07:45 PM   #2
Join Date: Jan 2013
Location: Houston,TX
Posts: 125
Maybe an o2 sensor. Is your exhaust manafold cracked?

Mr.Mud is offline   Quote
Old 09-26-2013, 08:54 PM   #3
Join Date: Sep 2013
Posts: 2
my exhaust manifold seems to be fine, and when I unplug the o2 sensor I still get the same thing. starts up, idles for a minute, then surges high/low and stalls out. At this point i'm wondering if it's a bad IAC from the factory?
dirtchicken is offline   Quote

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