I've been encouraged to start a new thread with an issue I'm having.. might be similar to ones I've found in other searches but not quite sure so thought to get some your opinions...
When I am idling in drive gear (never happens in neutral), there is the slightest hint that the engine idle rpm fluctuates up and down. If I look at the tach, the rpm fluctuation doesn't actually register, it's that narrow of a range. There are only 2 noticeable symptoms, the first is a slight resonant vibration in the cabin (no plastics shaking but a low resonant vibration) and the second symptom is the oil pressure flucuates very slightly around the 2.2 mark.
Following some other posts here I cleaned out the throttle body with throttle body cleaner b/c and found that it was definitely gummed up a bit - difficult to move before the cleaning, but now moves freely. I also checked the OVP fuse and the fuse seems OK. However, the 2 symptoms are still present.
Oh and when I was taking out the air intake that goes to the throttle body, I took out something that looked like a sensor (had a red tip).. is that a lambda probe?? in any case, that looked like it had a bunch of crud on it so i cleaned it off with a cotton swab.
So what else could it be? If its the OVP relay, is there any way to check before replacing for another one? Or is it something more mechanical like worn out engine mounts?
Many thanks!
When I am idling in drive gear (never happens in neutral), there is the slightest hint that the engine idle rpm fluctuates up and down. If I look at the tach, the rpm fluctuation doesn't actually register, it's that narrow of a range. There are only 2 noticeable symptoms, the first is a slight resonant vibration in the cabin (no plastics shaking but a low resonant vibration) and the second symptom is the oil pressure flucuates very slightly around the 2.2 mark.
Following some other posts here I cleaned out the throttle body with throttle body cleaner b/c and found that it was definitely gummed up a bit - difficult to move before the cleaning, but now moves freely. I also checked the OVP fuse and the fuse seems OK. However, the 2 symptoms are still present.
Oh and when I was taking out the air intake that goes to the throttle body, I took out something that looked like a sensor (had a red tip).. is that a lambda probe?? in any case, that looked like it had a bunch of crud on it so i cleaned it off with a cotton swab.
So what else could it be? If its the OVP relay, is there any way to check before replacing for another one? Or is it something more mechanical like worn out engine mounts?
Many thanks!
