New knock sensor, same old issue...

[Adam A.]

So, my mechanic replaced the knock sensor and cleared the CEL, but he has experienced no improvement in the way the motor runs (rough idle, bucking under load...)

I suggested to adjust the TPS, because I had in an attempt to solve the problem before I let him try... but I haven't heard from him yet, which is not a good sign.


Whatdyall think? He mentioned the ECU might be bad, which is of course possible, but I don't understand that... 105k replacement? That's not on the maintenance schedule...

Awesome right?

Edit: Could this be somehow related to TSB# NTB00-096a which calls for a special ECM program? It is odd however, because it ran great when I bought it at 104k... less than 1000 miles later and the $hit hits the fan... Thanks Murphy!

Edit: Also, NTB00-052c further suggests an ECM replacement/reprogram ... Curiouser and curiouser...

[Adam A.]

Checked all the plugs; all good. Engine stalls, hesitates, knocks...

Knock sensor replaced. New plugs, wires, cap & rotor.

Much noise, metallic scrape from distributor area... clicking similar to relay noise on driver's side of motor (audible from driver's seat, behind dash). Could be a whole lotta exhaust problems... any other ideas? Fuel injectors check out.

Edit: It turns out I needed a new distributor...

[demondrive]

vacume leak?