Bad luck. It was on the way out anyway.
BWD is Borg Warner's current name. OEM supplier for a lot of this stuff, but I've had issues with some of them when bought from O Reilly. Then again I've gotten BWD stuff with OEM (ford) Part numbers too. I think they re-box their OEM stuff for retail when they have excess.
Since last post jeep was running normally (last 2 days). Tested the MAP sensor and was getting correct measurements as per test procedure.
However, this afternoon I went to go give the Jeeps engine a high pressure hose clean. Being very careful of all sensors, it cleaned very nicely. After the wash it started up perfectly. On the way home from the wash the jeep cut out (tach drops to zero). Pulled over, put in park and made it home pretty fine. Back to testing... Test the resistance on the CPS between terminal B and C, and apparently reading should be infinite. Mine was reading 198, which is low and wrong (I speak under correction).
So, out comes the CPS, give it a visual inspection, give it a nice clean (hoping it might make a slight difference some how) and I put it back in. Start up the Jeep, immediately revs jump up to 1800 while in park, jumps back down to 800 once in drive. Put in drive, can't even take off as it is sputtering too much.
So off to the parts store it seems tomorrow morning. Oreillys stocks a BWD CPS, which I have not had bad luck with. However lots of folks recommend going Mopar replacement.
Just an interesting observation from today - why would it happen all of sudden after the engine clean (the connector was dry as well as the actual unit) or was it just bad luck...
Thanks again!
I went mudding a few months back. Sunk to the doors in water - water in the trans in the diffs, mud everywhere.
The MAP sensor survived the mud and river just fine, died after it got barely any water on it while I was cleaning the engine bay (even used saran wrap to keep it dry).
Was fine for a week before I cleaned it! Swapped it with a spare I had and all is well again.
Bad luck. It was on the way out anyway.
BWD is Borg Warner's current name. OEM supplier for a lot of this stuff, but I've had issues with some of them when bought from O Reilly. Then again I've gotten BWD stuff with OEM (ford) Part numbers too. I think they re-box their OEM stuff for retail when they have excess.
Ok great to know thanks! Went with BWD, has a lifetime warranty
I went mudding a few months back. Sunk to the doors in water - water in the trans in the diffs, mud everywhere.
The MAP sensor survived the mud and river just fine, died after it got barely any water on it while I was cleaning the engine bay (even used saran wrap to keep it dry).
Was fine for a week before I cleaned it! Swapped it with a spare I had and all is well again.
Yeah it's odd! Electronics can be fussy sometimes...
Quickly went to Oreilys this morning and picked up a BWD CPS with lifetime warranty. Quickly swapped them out. Reset the ECU, start up and... Splutter splutter rough idle etc.
Had to get it perfect before school starts tomorrow, so I immediately started taking out every sensor I could. MAP, TPS and idle air valve control. Throughly cleaned the air intake too.
Well... The culprit was the idle air valve control, had massive build up on it. Cleaned it nicely and popped everything back. Had a little hesitant start, but let it idle for a few minutes and all is perfect now! Jeep hasn't ever idled this well.
So I would definitely say the culprit for the jeep cutting out was the CPS, and the rough idle was the idle air valve control.
Attached are some pics:
Just a big thanks for everybodies replies, always nice to have other people's inputs
