[asecerttoyotech]

Working on a 2001 honda crv for a friend that misses under load (accel, uphill, a/c on @ idle, etc... ) he replaced the plugs, wires, cap, rotor, and coil. When he brought it to me, I test drove it and it wasn't as bad as he had described, but gets worse as it warms up. I am looking at the map sensor, but can't find any specs for the signal wire on alldata. It has a good 5v ref and a good ground. Any suggestions??

[this8384]

Have you checked to see if there are any diagnostic codes stored in the computer?

[asecerttoyotech]

It only has misfire codes.

[this8384]

Where did he get the replacement parts from? Did he replace them all at the same time or did he do it in stages(i.e.: plugs & wires first, then the cap & rotor, then the coil)? Have you tried running some cleaner through the injectors?

[TxGreaseMonkey]

Replace the Ignition Control Module, coating the back with a thin, even coat of heat transfer silicone grease. This will likely solve the problem.

[asecerttoyotech]

It really seems like an ignition problem. I work on Toyotas and this sort of problem is usually a coil. That ICM may fix it. I'll give it a shot.

[this8384]

Something else I thought of. We had a vehicle in here that kept coming up with a misfire code on cyl. 3 but the plugs & wires were new; the intake gasket had started leaking internally which was causing the misfire. Good luck!