Altestry Posted November 16 Report Share Posted November 16 My mom’s 2017 SXT V6 has had its battery and alternator replaced, we replaced them because of a loud grinding noise and the car was dying. Now the car doesn’t die but the grinding noise is still there and when a load is applied the voltage drops a significant amount when I was doing the test the car got put in battery saving mode. Quote Link to comment Share on other sites More sharing options...
larryl Posted November 16 Report Share Posted November 16 So if the grinding noise is still there it wasn't either one of those. Did you replace the IBS sensor? That can cause voltage issues along with relays the TIPM and ground straps Could your water pump be going out? Quote Link to comment Share on other sites More sharing options...
2late4u Posted November 17 Report Share Posted November 17 or the belt tensioner and or idler pulley as well, have it checked out for the noise problem first try using a eng stethoscope/long screwdriver against different engine parts that might be making the noise...after you find the problem, that should let your battery charged back up unless the new alternator is not working properly,,even new parts can be bad Quote Link to comment Share on other sites More sharing options...
Altestry Posted November 17 Author Report Share Posted November 17 13 hours ago, larryl said: So if the grinding noise is still there it wasn't either one of those. Did you replace the IBS sensor? That can cause voltage issues along with relays the TIPM and ground straps Could your water pump be going out? I believe it might be the Ibs sensor, all the electronics are freaking out when battery gets low. Also the grinding noise happens intermittently Quote Link to comment Share on other sites More sharing options...
2late4u Posted November 18 Report Share Posted November 18 (edited) 21 hours ago, Altestry said: I believe it might be the Ibs sensor, all the electronics are freaking out when battery gets low. Also the grinding noise happens intermittently I do believe its NOT the IBS sensor,, FIRST find the noise /grinding that is your main problem and yes if your running the battery down the electronics will act crazy.when it is running have the alt checked at your local parts store to see if its putting out the correct charge also .check your idler arm pulley and the belt tensioner for the grinding noise before replacing the IBS as it is expensive part,,do the cheap or free stuff before throwing parts at the journey,,,also please report back on what you find to be the problem /solution for others to learn from...good luck Edited November 18 by 2late4u Quote Link to comment Share on other sites More sharing options...
Altestry Posted November 18 Author Report Share Posted November 18 4 hours ago, 2late4u said: I do believe its NOT the IBS sensor,, FIRST find the noise /grinding that is your main problem and yes if your running the battery down the electronics will act crazy.when it is running have the alt checked at your local parts store to see if its putting out the correct charge also .check your idler arm pulley and the belt tensioner for the grinding noise before replacing the IBS as it is expensive part,,do the cheap or free stuff before throwing parts at the journey,,,also please report back on what you find to be the problem /solution for others to learn from...good luck Sorry first time posting will report back tomorrow investigating the noise, also could i test the alternator at home I have a cheap multimeter and thanks for the help Quote Link to comment Share on other sites More sharing options...
2late4u Posted November 19 Report Share Posted November 19 since you said the alt and the battery has been changed and then the prob developed I would also check your battery cables to make sure they are clean AND tight we had one person complain of some problems and then later on said m bad one of the cables wasn't tight making intermittent contact causing their problems, it is can be the simplest and and hardest problems to find loose connections and bad grounds as well on dodges Quote Link to comment Share on other sites More sharing options...
Altestry Posted 10 hours ago Author Report Share Posted 10 hours ago On 11/17/2024 at 5:11 PM, 2late4u said: I do believe its NOT the IBS sensor,, FIRST find the noise /grinding that is your main problem and yes if your running the battery down the electronics will act crazy.when it is running have the alt checked at your local parts store to see if its putting out the correct charge also .check your idler arm pulley and the belt tensioner for the grinding noise before replacing the IBS as it is expensive part,,do the cheap or free stuff before throwing parts at the journey,,,also please report back on what you find to be the problem /solution for others to learn from...good luck So after more investigation the car is still running but noise persists and voltage still dropping. Uncle came over and replaced the idler pulley and got another alternator for free. I believe the noise is coming from the compressor but still not sure the noise happens whether ac or heat is on or off but gets slightly worse with either on (still the noise is only really noticeable at idle). I hooked up a multimeter and noticed that running it stays around 14 volts but when the noise happens the voltage drops to 10 even lower. I’ve looked at the belt while running and it doesn’t look like its getting seized but idk Quote Link to comment Share on other sites More sharing options...
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