Toyota Echo shudders when accelerating, mainly on hills

toyota
echo

#1

We have a 2005 Toyota Echo, manual 5 speed, with 160K miles. Everything works fine except for when you are accelerating (can happen in any gear) and mainly uphill. I assume the primary condition is when the car is being pushed or under more load than just cruising, anyway, it will will make a low grumbling noise and simultaneously shudders as if it is going to stall. This happens in a jerky fasion and doesn’t last very long but consistently under aforementioned conditions. We have 3 Echo’s by the way, all manual shift (Echo friendly :wink:

Scratching my head with a wrench in Florida!


#2

How are the basic maintenance items? You’re probably just looking at a basic ignition or fuel flow problem. Old plugs or wires, clogged fuel filter, failing fuel pump - stuff like that. Partially clogged exhaust is another possibility though not as likely as the others. So check out the plugs and wires and stuff and test the fuel pressure - but do it under load - and give it a new fuel filter.


#3

Thanks, I changed the plugs 2 years ago, kept up with oil changes since we bought it in 2005. Haven’t changed anything else except front wheel bearings, brake rotors and pads. I recently switched from conventional oil to synthetic blend. I also have been adding some Marvel Mystery Fluid to the gas and crankcase occasionally. I am leaning towards fuel filter/pump. Thanks again.


#4

Should have asked how old the clutch is. If the clutch is original you might just be getting some slippage with old, weak, rattly dampener springs.


#5

Hmmm…it is the original clutch. Would explain the sound, drop in acceleration and it only occuring on hills or when being pushed to perform. Thanks again, I was starting to wonder if it was the marvel MYSTERY Fluid. I think you are narrowing it down!