Owned 21 Years
Join Date: Jun 2003
Location: where havn't I lived? Now in Erie, CO
Bronco Info: 95XLT351 E4OD SAS 44/ARB/Alloy shafts-joints. D60 rear/Detroit. 4wheel disc,35" KO2's, 4.56etc.
Clicking or Ticking noise from front of motor
I did search, so I know a little better what to ask and what to describe. I did not, however, find anything in the other "noise" threads that seems to fit my issue, so here it is for any thoughts you may have:
Not sure how long ago this started, maybe 3 weeks?
Truck makes no noise when started up cold, and actually makes no noise for 10-15 minutes until it gets warm.
Once the clicking starts it's there, and you can hear it in the cab while driving. The speed of the "clicking" increases when the gas pedal is pressed, however, unless my tires drown out the noise it seems to only be noticeable at lower speeds/RPMs, seems to go away once I am going faster than maybe 35mph.
Now, strangely, once the clicking starts it's "timed" with the gas pedal/RPM, BUT, it's not ALWAYS there, just most of the time when you start off from a stop especially. But like I said not always.
So then I get back home and back into the garage, clicking is present as I gas it a little backing up the driveway into garage. Put it in park and give it a little gas, and get a little clicking, so we can rule out anything that's not related to motor speed.
My issue is when popping the hood and giving it gas at the throttle body, it appears to be coming from the front of the motor. I thought it might be pvc or rear emissions stuff back there, but that seems to rule that out. For the life of me I still cannot tell if it's internal to the motor or external, so I have not ruled out something going on with the belt and accessories. The belt I replaced a few months back with a slightly longer one due to the OBA compressor I did.
I can't see how this would be an exhaust leak due to what I described. Could it still be a manifold/vacuum leak if it comes and goes like I describe and only occurs once warm? Is there any other emissions crap up front that might create this? If it's internal, what might cause a clicking once warmed up, RPM timed, but not 100% constant?
It's not a loud click. much more noticeable once you pop the hood, if it decides to do it when warmed up. I call it a click vs. a tick just because I can't even tell if it's a sound that is "metal" related....metal on metal kinda ticking. It's also definitely not any kind of popping or puffing sound.
No issues with the truck, idling great, starts right up, good gas mileage all things considered, just generally running very good. Did fresh oil/filter about a month ago, fluids full, coolant fine. Could the clutch fan be getting noisy? No issues with temps, just wondering about any external to the motor things to check.