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Ignition coil is new, what voltage should I be getting from O2 circuit if I check it?

I got the 1A Auto ones which are a four hole injector

New IAT went in just fine, cleared the code and it came back within ten minutes of driving. Running out of ideas that are causing these codes at this point.

Ordered one yesterday, waiting for it to come in on Tuesday

All Proper NTK Sensors upstream and downstream, engine temp is well within normal operating range.

Hey Guys, got a 2004 Wrangler Unlimited with 4.0. Have had a check engine light for both the P0172 & P0175 codes detecting the engine is running too rich. I have replaced fuel pump, fuel injectors, IAC Valve, MAP Sensor, Throttle Position Sensor, and all the O2 Sensors when I put the new...

What you've described is pretty similar to what I have going on. It will take a long time to start if the engine sits for about fifteen minutes, but if i turn it on when it's at regular operating temps, it will start right up just fine. I've already replaced the fuel pump, so what regarding...

I have a 2004 Jeep Wrangler Unlimited, and it's been really taking a long time to start. The starter is cranking strong and fast, and I've already replaced the fuel pump to see if that would help, to no avail. I read somewhere that the problem to a long crank time could be either the cam or...