Changed the oil and filter, and the distributor cap and rotor. Took a hiway drive.<BR>Runs REALLY smooth under no load.<P>BUT... <BR>When trying to accelerate from ~30mph in 3rd gear (A/T), ~2250 RPM, it sometimes just don't wanna go (it's about 50% of the time).<BR>1st and 2nd are fine, I can run up to almost 60 mph in 2nd (@5000 RPM [img]images/icons/smile.gif" border="0[/img] ) with little effort. It really does want to accelerate in low gears.<BR>Noticed:<BR>When trying a slow accelerate in 3rd or 4th (O/D) from ~2500 RPM, ~50% of the time a valve chatter begins softly, as soon as the throttle is advanced even the slightest amount. Whenever this happens, any more throttle results in that power loss, and a much louder valve chatter.<BR>If the faint chatter doesn't occur, then subsequent acceleration is normal.<P>Does this mean I have an oil pump problem, and that the autolash adjusters can't cope?<P>Eddy,<BR>I'll check the tank when it's low. The fuel pump's flow rate checked out OK, but maybe it's a floaty bit that's intermittant. I'll check the fuel lines and the exhaust again tomorrow. I'll put it up on a ramp, and really check it out. I'm hoping to NOT need to pull the carb for a cleaning, but it may be a good idea soon...<P>Kary,<BR>I had a temp sensor fail on me ~10 years ago, and I noticed it because one of the under hood relays kept chattering. I'll see if I can get it checked out. The TPS sounds scary, but I'll keep that on the list for the mechanic to check next week, along with the oil pump.<BR>I'm thinking of installing a vacuum gauge, and watching it for a while while driving, especially when the chatter begins. I may need a more accurate (responsive) oil pressure gauge as well...<P>Thanks all, and any input is appreciated!<P>Don<p>[ 24 November 2001: Message edited by: don ]