My 01 Civic has had an intermittent problem that occurs when I’m driving 30+ miles at 70MPH. It has happened 5 times over the last 2 months. I will be driving down the interstate and suddenly loose power. I pull over and the car is still running but very rough. If I try to rev up the motor it only goes to 3k RPM’s and then when I let off the accelerator I can hear it backfire. If I try to drive the car cannot even get going above 20 MPH. If I shut the car off and wait 10-15 minutes, the car starts back up and runs fine.
First I had the gas pump relay replaced and that did not help. Last I had the fuel pump replaced and that did not solve the problem.
The problem is not consistent. Any ideas I can share w/ my mechanic would be greatly appreciated.

 

Check your cooling system. Pull your thermostat out, drop it in a pot of boiling water. If it opens up wide, it's not the problem. If it opens just a little bit it or not at all it's toast. Get an OEMHondathermostat (I can't stress this enough).

Hope this helps

 

think he would see the temp guage go up if that was the problem

 

open the hood at night - see any sparks ??
check wires; do a tune-up.
what codes do you throw for electrical ???
may be ignitor, coil, distributor ?????