rx7joe

iTrader: (10)

I just got done replacing a bunch of stuff for aguy including the vacuum lines, a downpipe and rebuilding the turbos. I had trouble getting it started. It turned out I had left the front primary injector unplugged and luckily was able to reconnect it with a screwdriver. Anyway, After giving me a further hard time, I finally got it to start, but it smokes like a bastard and if I give more than just a little gas, it cuts out and when you let off the throttle it pops really loadly like there's some booming going in the exhaust. Anybody experience this before? Everything worked fine when I took it apart aside from a secondary turbo malfunction.

Thanks

Greg

rx7joe

iTrader: (10)

I drove it around the driveway a bit and the smoke went away. I think it was just a lot of excess fuel in the exhaust from it having so much trouble starting. Anyway, it still won't drive. Anyone have any suggestions?

Thanks

Greg

rx7joe

iTrader: (10)

Nobody's got any suggestions?

Zyon13B

is it an FD?

911GT2

If the injector was unplugged, and the others were still firing it probably flooded. After it starts if it was flooded it should smoke and backfire a bit. So that sounds normal.

Did it warm up completely when you had it in the driveway? When my engine flooded it took a good 15 mins of driving for it to begin acting "normal" again.

Can you describe the throttle problems any clearer. I'm not sure whats going on from your above descrition. It could be that the plugs were fouled from the flooding. Try checking/changing those.

rx7joe

iTrader: (10)

Ayup

As far as the smoke, it's disapeared and I know that it was from the leftover fuel. The car idles and seems to run perfectly from what I can tell. The problem now is that it won't drive. anything over a 1/4 throttle(if that much) the engine completely shuts down. Of course if I let off the throttle before it dies completely it will come back on, make a loud popping (assumed to be extra fuel dumped into the exhaust igniting) and continue like nothing happened. The serivce manual says to check the long range TPS sensor, so that will be my next check item. My experience with TPS failure has never been to have it shut down completely though, just run choppy. This was on my old 2nd gen motor though so maybe it's different with the speed density system on the 3rd gen. Anyway, I didn't have time to get into it last night, I was just hoping someone had a similar experience that they could share.

As far as the plugs are concerned they were checked quite a few times to make sure that it wasn't flooding and they were perfect and actually never showed signs of flooding. Ive taken ones out in the past and had them covered in fuel. Like I said, the idle is great. It just acts like you turned the key off if you give it more than a 1/4 throttle.

Thanks

spurvo

MAP sensor unplugged after all those vacuum hoses? It's the little box on the firewall, just behind and to the right of the throttle body. Should have a connection with filter to the upper intake manifold, on the backside of course...

voodooracing

Yes, could be that...
and may be lean fuel will cause the car not want to rev up... may be your 2ndary is unplugged too?

Hupperware

If you had something unplugged while the engine was running and hooked it back up without resetting the ecu, it will still think that it is disconnected. Try disconnecting the negative on the battery, stepping on the brake pedal and hooking everything back up.

911GT2

It wouldn't idle and or run without the MAP sensor hose plugged in correctly, so I doubt it's that.

rx7joe

iTrader: (10)

Thank you so much for posting that. I totally forgot about the ecu doing that. I reset it and it runs great now. Thanks a lot!!!!

Greg

Bobber

Yep!! My RX wouldn't throttle up either so I did just that, took out the fuel pump relay and the main engine too. then tested them, and put them back. Still the same until I reset the ECU. Disconnect the Neg on the battery leave it 30secs and put your foot on the brake!! connect the battery back up and hey presto mine went back to full power!!!

skunks

awwww man, you beat me to it, i was just gonna mention this. the same exact thing happen to me after my fuel pump wires shorted inside my gas tank. in anycase, good call!