joeydinc

so, I've been doing some work to the car, opening the intake, doing the brakes and brake lines, change PCV valves and some vacuum lines, as well as a few new ground wires. I also changed out two couplers and replaced most of the clamps for better clamps. And I get the engine back together and started and it runs very smooth, get the car up to running temp and rev it a little and runs really well....... THEN DOOM!!!!!!!!!!!!!!!!!!!!! the engine dies and won't start. NOOOOO!!!!!! I cry!!!!!!!.... I run through everything that I touched, couldn't find the problem... the engine would fire and come close to starting then just...... shut down. So I pulled the battery, checked my grounds and looked at my TPS and MAP making sure its all still plugged in..... and well it is. at this point I figured the Gods hate me and I screwed up the ECU or some electronics.....


On a whim I unplugged the MAP vacuum and tried to start the car, it sputtered and ran... bad, but ran.... I let it run like that for a while, and then plugged the vacuum back in, and that engine settled down........ I sang Lowrider to the Gods, shut off the engine and started it agian................. starts great and runs smooth.

All I need to do is finish bleeding the brakes and take it for a drive and test it. I'm very interested in seeing how the grounds I put in help out. In my old FC it made a HUGE difference.

Monkman33

iTrader: (28)

stock ECU going through the relearning process?

Did you try disconnecting the battery, tapping the brakes, then reconnecting and starting? I dont know if the stock ECU is adapting or not. so this is just a WAG

DaveW

By disconnecting the MAP vacuum line, you allowed additional air into the intake during starting, correcting for an over-rich/flooding problem. That's probably why it started. Then the disconnected MAP sensor told the engine that the vacuum was low, and made it run rich - that's why it ran badly until you plugged it back in.

Glad that worked.

Dave

joeydinc

ya basically DaveW is right, that's why I tried it, it would acting like an air/fuel problem, and after trying to disconnect the battery tap thebrakes, dance, and turn the key 10 times and that didn't work, I figured I needed to find the dead electronics, luckily I decided to try the MAP first... I am happy now, I can't wait to get it on the road to go drive it.


Sadly though...................... this morning I found out I have to find a new place...... :-( and I am considering moving out of the area, which means maybe getting rid of the FD....