A common culprit is a failing oil pressure sender. If your jeep or chrysler 3.8l v6 engine makes a rattling noise on startup, you’re not alone It's attributed to oil draining from the engine components when the vehicle sits for extended periods (a day or two), leading to a brief period of dry starting until oil pressure is restored.
How to: Install Oil Pressure Switch 2014 Jeep Wrangler (Sahara, Rubicon
They installed a baxterperformance spin on oil filter adapter on a jeep to eliminate the cartridge filter and claimed it reduced overnight dry rattle.
So it's a been few months since this noise has been goin off everytime i start the engine and i don't know what it could be i'm thinking it could be the.
My 2014 3.6 with 85k has developed what i understand is a fairly common rattle on cold start Also my understanding is the cause is the hydraulic lifters are leaking down when parked. So, let’s dive deep into the world of jeep wrangler oil pressure switches, covering everything from symptoms of a failing switch to its location and replacement. Coming from a jk with a 3.6l, the oil pressure at startup from a cold start would always be in 'high pressure mode' with 80+ psi until it hit operating temp
It would then return to normal. If this just occurred with the temperature drop could be your oil is now too thick, takes a few seconds at start up to start to flow Try a lower viscosity such as 5w30. Occasionally i get a knocking or more like momentary rattle on cold start with my 04 tjr 75000 miles.
I changed back to mopar oil filter because i heard it has a better check valve.
After reading this thread i feel somewhat better about it It seems to be a normal noise the 2.0 makes at cold start Ours too does sound like a diesel during the initial cold start too I need some help figuring this out
On cold starts, ie first thing in the morning or after jeep sitting for 12 hours or so, my gauge shows a considerable lag in building oil. The reason i asked if it was only at cold start or during every start, is because engine components expand with heat On cold starts, the tolerances between components are large and. 3.6 normal oil pressure ranges
2 stage pump, high range pressure starts at about 3k rpm
High/low range solenoid, number 2 below, failure defaults it to high range because if it fails you. Jeep wrangler engine rattle common causes heat shield issues rattling noise should sound like it’s coming from under the engine The service tech said sometimes that noise is the heat shield which is a much quicker. This doesn't sound bad or abnormal to me
I hear a slight rattle toward the end of the audio but that could just be a rocker arm before it gets fully oiled up on a cold start Has anyone else had issues with timing chain or valve train noise on cold starts with different oils I finally got mine to stop by adding an oil additive, but the noise was making me cringe. Changed the oil from 10w30 to 5w30 now, and got the filter with a better drain valve
It went away for a few cold day startups which is in the garage but now its back again
