dying at idle

[CRGR]

2000 wrangler 4.o sport dies at idle after running a while (warming up). runs great, smooth, strong, etc. otherwise but when you slow to a stop sign or red light it idles very low and dies. Pop in N and cranks right up and goes. I've seen/read about IAC(?) and TPS(?) but not sure i know exactly what i should do to fix it. i can turn screws but cant rebuild an engine. I've done my spark plugs, brakes, and little stuff like that. It seems either of these would be fairly easy to get to, etc. Is this something i could buy at an auto parts store an pop in myself? from described, what do you think the issue is and which way should i go for repair? @Chris @Jerry Bransford thanks in advance-

 

[Don_L]

Sounds like your CPS - crankshaft position sensor. Cheap/easy replacement. One bolt holds it into place at the top of the transmission.

If replacing I would suggest spending the extra cash to get OEM. I replaced mine with a Crown brand, engine misfired several times. Ended up returning it for a functioning OEM sensor and no more problems.

*If installing a new one I would suggest using gravity in your favor. Detach the cable at the plug, plug in your new sensor. Tape the new sensor to the old one and pull from underneath. Much easier that way.

Hope that solves your problem.


Sent from my iPhone using Tapatalk

 

[Chris]

The very first thing you should do in my opinion is clean your IAC have. Check this thread out: How to clean your IAC (Idle Air Controller) valve

It's very easy to do, and costs next to nothing. Do that and then report back. There's a good chance it will fix your issue. If it doesn't then I'd make sure you don't have a check engine light on (if you do, scan it for codes and report back).

 

[StG58]

The very first thing you should do in my opinion is clean your IAC have. Check this thread out: How to clean your IAC (Idle Air Controller) valve

It's very easy to do, and costs next to nothing. Do that and then report back. There's a good chance it will fix your issue. If it doesn't then I'd make sure you don't have a check engine light on (if you do, scan it for codes and report back).

X2, sounds like the idle air control (IAC) is in need of a little cleaning. They do get gummed up and sticky. If that doesn't do the trick, then replace the IAC.

 

[CRGR]

The very first thing you should do in my opinion is clean your IAC have. Check this thread out: How to clean your IAC (Idle Air Controller) valve

It's very easy to do, and costs next to nothing. Do that and then report back. There's a good chance it will fix your issue. If it doesn't then I'd make sure you don't have a check engine light on (if you do, scan it for codes and report back).

thanks - i'll try that and report back

 

[Tj04]

Make sure to get a sensor safe cleaner. And I'd clean the throttle body while your at it too. I had super super low idle and cleaning the IAC and TPS and throttle body fixed it.

 

[CRGR]

Update: removed and cleaned iac really good. Fired it up and let it idle for a while. Good. Took it for a spin for about 20 mins to get it warmed up. Punched it a few times to exercise it. Seems much better. Thanks all