rr25

Twice I thought I'd fixed this problem. But I was wrong. Classic coil #5 failure symptoms: Perfect start, smooth idle, good accleration under normal load. But get in it on a hill in 3d and floor it, car hesitates and bogs down to nothing.
So I:
1. Replaced coil, cleaned connectors, connections, regreased POS heat sinks. Car worked fine.
2. TWo weeks later, same problem. Checked PO's records. Found plugs had 40k on them. Replaced plugs, connectors. Cleaned all connections. Car worked fine
Two weeks later. Same problem.
Sugestions for what I should look for next? MAF? BPV? (The Michelin Man hose is tight, no cracks. Other hoses seem ok. Fuel filter replaced 2 months ago.)

Stage-3-Emre

Did you pressure test the intake track?

repeater

Test the POS's again.

kchin

i had a similar problem last week, new engine speed sensor helped

4Driver4

Test each coil one at a time, widening the spark gap and re-testing until the spark won't jump. If one coil is weaker than the others, replace it.

bugs

I had coil replaced...OK then two weeks later another coil replaced. 3 months later same problem. Finally found a bad boot shorting out.
Check your boots!