2.7 quits at idle - makes grinding noise intermittant
1998 Intrepid 2.7, 58,000 miles. Sometimes it runs PERFECT. Increasingly, some weird things have been happening intermittently. Starting cold: won't idle, engine starts and dies. Odometer then reads: "P 1684" then it reads "Done". BTW, I can NEVER rev the car above 3,500, whether running properly or not. The RPM starts faltering around 3,000 and bounces a bit 3,000 - 3,300. (This was not any problem since it never revs that high while driving).
Even when it starts and idles properly, there is still another intermittent problem. Strait on the highway, no issues, unless I turn on A/C, then a low growling until I shut off A/C and then it takes around 1-minute for noise to stop. Even with this problem (A/C on) engine performance is not effected, other then the normal slight power draw for compressor. But wait . . if I am on local streets and turning the steering, I can get a loud grinding (like ice cubes in a blender) which will not stop until I switch off ignition. 10-seconds later, I can restart the car with no problem, no noise. Even stranger, suppose I turn off highway and pull into a gas station. No problem, no grinding, no noise, until I turn OFF ignition. Even after it seems that the crank has stopped, belts have stopped, engine stopped, for 1-2 seconds I can get the grinding noise. 1. Key off. 2. Engine stops. 3. Then grinding.
No codes in computer. All clear.
Please can someone help me. My mechanic knows less about this than I do. Thanks.
Last edited by Izeldor; 08-29-2018 at 04:54 PM.