rreader

Ok, so here's the deal My wife allowed me a project. I think I've got one. I'm not really familiar with rotarys and this one's doing things I can't say I've ever seen in any other car. Was running fairly smooth when I first brought it home. Last week it started to run little rough then the idle would drop to like 400 then it would stall and flood (with tons of gas on the plugs). When the car ran good it still seemed to be real rich(heavy gas smell) The history as I know it about this car. The stalling thing only happened once. It also seems to not be able to hold a steady speed when cruising on the highway. (It kinda shutters or stumbles)

Here's what I know:
1) This is the second engine (no prior history) seems like a hack job install.
2) Air pump missing
3) ACV has holes where the air pump was connected open to the air.
4) The Cat and presilencers removed.
5) O2 sensor disconnected. Now reconnect but no difference may not be working.
6) Vacuum line disconnected coming from the front of the dynamic chamber it is the lowest one of 4 in this location. (book says it goes to the Air Bleed Socket)

I was told to remove the ACV and add a block off plate and check the coils and injectors. Any suggestions would be appreciated I don't know an informed rotary person.

speckamp

adjust the TPS, possably test and replace the O2 sensor, get the ACV blockoff plate, or get an ACV and re-install the air-pump.

The ACV is sorta like an EGR valve, it actually injects some air into the combustion chamber which becomes part of the mixture. w/o it you're gonna run rich cuz the idle system is gonna think it's getting that air, and then not.

Also, if you can't find a vaccum line to hook up to the manifold, cap the port it connects so so you're not leaking vaccum. Check for any other disconnected sensors / hoses.

That should help you on your way, and good luck!

--matt

Rotary-MG

iTrader: (1)

Looks like you just missed a bunch of posts we GSLSE owners just got thru. Go back a few days and search for them. Many of you same issues were just discussed last week.

If your O2 sensor is not working, then your ECU is getting the wrong signals and possibly flooding your engine. The ECU needs the O2 sensor to tell it how rich or lean the fuel mixture is, and make adjustments accordingly. 14:1 and it does a good job at keeping it there.

The TPS tells the ECU how far down you have your foot on the gas. If misadjusted, the ECU could be thinking that you have your foot 1/4 way down when you are really standing outside of the car. Plus, if the TPS is worn out, like mine was, you could be experience surging and studdering while you drive. And Ohm meter will let you see if the signal climbs smoothly from 1K to 5K Ohms. Mine jumped around, so the ECU thought that I had a shakey foot.

Oh, and read this. It helped me out greatly. If you find my posts, then you'll understand. I just got my '84 GSLSE last month, and it was in about the same condition as yours. But I'd bet that mine was running worse. I took a gamble on buying it, but now she runs great.

http://www.nellump.com/peri/epi/firs...gslseIdle.html

Get an NEW O2 sensor for aroun $45. That 'll make a big difference right away. Another cheap fix in cleaning the interior of the Throttle body with spray cleaner. Do at least those thing BEFORE messing with the adjustments. If you don't, you'll end up adjusting everything you touched again and again and again. A dirty intake will make things act as though they are misadjusted.

I'm usually on only during the week days. So I'll keep an eye out for any posts refering to GSLSEs. Keep us posted.

Welcome aboard, and good luck!!!