Have had an idling issues on my 2001 Accord EX (2.3) and when I cleaned the idle air control valve 3 weeks ago I noticed the TPS was the original unit with break away screws. With 260XXX miles I didn't think it would hurt to replace that in the future. Yesterday I removed the throttle body, MAP and TPS, cleaned unit, reinstalled MAP, replaced and calibrated TPS, reinstalled throttle body, and now the car won't start. Cranks fine, but just won't start. Didn't know if there was a reset or learning process after this procedure? I feel like I'm lacking the signal to tell the car it's OK to release fuel or something simple? I'm stumped.

 

Are you sure nothing is unplugged or got pulled loose? Even if the TPS was bad the car would start.

 

Check that the connectors for the MAP sensor and TPS were not switched. The TPS connector is blue, while the MAP sensor connector is gray.

TPS wire colors are Grn/Blk, Red/Blk, and Yel/Blu. MAP sensor wires are Yel/Blu, Grn/Wht, and Red/Grn.

 

I was cross-eyed by the end of the day yesterday. Had a couple of other people looking for obvious disconnects as well. Other than the MAP and TPS, nothing else was electrical... coolant and vacuum lines, throttle/cruise cables?

 

Yes, thanks. Had to be be plugged correctly for me to calibrate TBS.

 

It's alive...
- Checked again to make sure I was getting the correct readings at the TPS connector... 5v at the yellow wire, .5v at red (throttle closed), and 12v at green.
- Had a spark and fuel pressure. Could hear the fuel pump spin up.
- Instead of spending any more time looking for things disconnected, I started to disconnect. Unplugged the MAP sensor and it started right up. Guess it was time.

Cheers.

 

can the plug ends be plugged up wrong and the car still run?

 

Not sure if this is monitored but I'm having the similar issue but when I switch the plugs around the blue to the map sensor map sensor to the TPS the car will start an idle but I can't give it any gas otherwise it dies on me.
If I switch them back to the blue to the TPS in the gray to the map sensor and try to start it it turns over but it won't start.
The car was running good I had the main seal replaced and then a couple weeks later I replaced the TPS and then I cleaned the throttle body and then I cleaned the upper plenum intake I was going to clean the bottom but since I was still connected to the motor I didn't want to do that so I already got the upper part cleaned.
I've done my best to calibrate the throttle body but I didn't have any luck with it I'm really at a loss here than what I need to do.
Does the TPS sensor need to be reset with a computer for the CPU I've read so much stuff here the last few weeks I'm like confused yes I've pulled the negative battery and the backup radio fuse I've done that in a couple other ways I was told how to do it in red and I tried them so I'm really really lost at the moment lol