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If you put bosch O2 sensors in the jeep it still may not run right. When I changed mine i went NGK for both. It is what was used from the factory and seems to work the best. Also look at the fuse in the box under the hood for the O2 sensors.
If you put bosch O2 sensors in the jeep it still may not run right. When I changed mine i went NGK for both. It is what was used from the factory and seems to work the best. Also look at the fuse in the box under the hood for the O2 sensors.
Well I think I was just hopeful after install yesterday. It runs the same as it was prior to install. The 02 sensor code might have been from a wet and dirty connection. It's showing no codes now though. I think it's something else. Maybe something fuel or spark? Think it could be the MAF from where it sucked water in?
No MAF, speed density. But I would look at pulling the throttle body off and giving it a good cleaning. Pull the MAP sensor there is a small hole in the throttle body that gets caked up very easily. There may also be some dirt trapped in were the IAC is located pull that and clean it. I would also check the ground connection back by the fuel pump that may need to be cleaned up as well. Also pull the connector for the CPS and clean that too. It's also possible that you got mud on the flex plate and that is giving the CPS a hard time reading. Pull the inspection plate off the bottom of the bell housing and spray a hose in there and see if there is a lot of crud that washes out.
No MAF, speed density. But I would look at pulling the throttle body off and giving it a good cleaning. Pull the MAP sensor there is a small hole in the throttle body that gets caked up very easily. There may also be some dirt trapped in were the IAC is located pull that and clean it. I would also check the ground connection back by the fuel pump that may need to be cleaned up as well. Also pull the connector for the CPS and clean that too. It's also possible that you got mud on the flex plate and that is giving the CPS a hard time reading. Pull the inspection plate off the bottom of the bell housing and spray a hose in there and see if there is a lot of crud that washes out.
I meant MAP. I'm used to working on my car, got the 2 mixed. Ok, well I guess I'll just give everything a cleaning and report back. Thanks.
you said you replaced the TPS, what brand did you go with. A lot of guys on this forum only suggest using MOPAR sensors. Chrysler products in general get very finicky with the sensors you put in them. With that being said i currently have a 15$ TPS sensor installed that I got from amazon and it seems to be working fine for now but i'm expecting a failure at some point.
you said you replaced the TPS, what brand did you go with. A lot of guys on this forum only suggest using MOPAR sensors. Chrysler products in general get very finicky with the sensors you put in them. With that being said i currently have a 15$ TPS sensor installed that I got from amazon and it seems to be working fine for now but i'm expecting a failure at some point.
I have a BWD from O'Reillys. I can go swap it out to see if it gets any better.
does turning the key on for five seconds first. turning it off. turning the key back on for five seconds. then cranking help alleviate the hard start? If it does I would suspect a fuel related issue. a leak somewhere causing the fuel pressure to release. A leaky injector or a bad check valve in the fuel pump are the two likeliest failure points. next step would be to get a fuel pressure tester and monitor the readings. Or you can pull the fuel injector rail turn the key on and see if any of the injectors are dripping which would indicate a bad injector.
How do the connectors at the PCM look? are they all dry?
does turning the key on for five seconds first. turning it off. turning the key back on for five seconds. then cranking help alleviate the hard start? If it does I would suspect a fuel related issue. a leak somewhere causing the fuel pressure to release. A leaky injector or a bad check valve in the fuel pump are the two likeliest failure points. next step would be to get a fuel pressure tester and monitor the readings. Or you can pull the fuel injector rail turn the key on and see if any of the injectors are dripping which would indicate a bad injector.
How do the connectors at the PCM look? are they all dry?
I think the check valve is bad. You can hear the gas gurgling back into the tank. Would that cause a rough idle?
I have that problem with my jeep. I have to do the poor mans prime when I start it. If I just sit and crank it it will run rough for a few seconds then even out.
(Sorry before about the MAF comment, I have issues with the MAF in my wife's Subaru right now. So that got me thinking of how much of a pain those things are.)
I have that problem with my jeep. I have to do the poor mans prime when I start it. If I just sit and crank it it will run rough for a few seconds then even out.
(Sorry before about the MAF comment, I have issues with the MAF in my wife's Subaru right now. So that got me thinking of how much of a pain those things are.)
Mine just ran good until it warmed up. It's not throwing any codes now. I don't know where to start besides pulling the injectors.
Did you run any type of cleaner in the intake? It might be worth it to spray some Deep Creep in the intake and clean it out. there could be some curd in there from the water. Also check the Air intake temp sensor see if that has anything stuck to it.
Did you run any type of cleaner in the intake? It might be worth it to spray some Deep Creep in the intake and clean it out. there could be some curd in there from the water. Also check the Air intake temp sensor see if that has anything stuck to it.
You could take the injector wires off one at a time with motor on and take note of any change. No change when you pull off wire, you might be on to something. Test spark the same way, remove one plug wire at a time, this one is fun too. Would'nt hurt to pressure test the fuel system too. Other than that, I got nothing.
You could take the injector wires off one at a time with motor on and take note of any change. No change whemin you pull off wire, you might be on to something. Test spark the same way, remove one plug wire at a time, this one is fun too. Would'nt hurt to pressure test the fuel system too. Other than that, I got nothing.
I tried pulling the plug wires and injectors. From those tests everything seems good.
I did notice something though. Everytime I unplug and plug back in the TPS, the jeep runs better on starting and then gets worse after awhile. Think the connector is bad?
