risaac928

Hey, forum PLEASE HELP...I need someone to walk me through a check list of what to diagnose ... PLEASE HELP...ANYONE in San Antonio who can come out and help.

What happened? Driving the car, never notice any problems. Parked the car at school, after class the car would not start. I was abel to start the car and nurse it home. It had a very rough idle and could not hold its idle unless I had the gas pedal pressed down.

SteveG

Where to start? I don't know, but generally, battery good?, put a meter on it; grounds, relay (fuel pump), spark? Plug wet? Have you done anything to it recently?

skippermccoy

My 82 sounded like that when I first got it. Mine was the vacuum line from the Aux air valve had slip. in the video it sounded like the flapper is continuously shutting. Try to hold it open with a long hose and see if it will run on its own. If it does check all the vacuum lines, manifold connections, seal between flapper and throttle body and temp 2 sensor. You can jumper the sensor to rule it out.

risaac928

Where is this Aux Air Valve, any pictures? How does one jump the 2 sensor?

skippermccoy

Aux air valve is located on the passenger side of the throttle body in front of the Cold start valve. There is a vacuum hose that goes from there to the throttle body. Thats where mine was leaking yours maybe a different line will you need to check all the vacuum lines. Try taking out the air filter and then open the flapper and put a long piece of hose in it to hold it open. To jumper the temp 2 sensor just put a wire between the 2 connections on the plug Sorry i cant post any pics my daughter took the camera to school for a class.

IcemanG17

SO many variables........hard to say exactly where....BUT I just solved a similar issue that was the AFM (air flow meter)....the air temp sensor was reading incorrectly and it sounded very similar to what you describe.....

Have you tried starting it cold....is it harder or easier to start cold?

risaac928

Its getting harder and harder to start. It was very weird. Driving fine, parked it came out to start it and it would not fire and when it did very hard to hold the idle. But now it is getting harder and harder to start. Also notice black smoke coming from area of air intake, does not smell like gas. I need some eyes on this..

risaac928

Okay, I am poking around the AFM housing. I removed it and stuck my hand down that hole where that AFM sits. There is dirty oil and it smells like a hint of gas. Is that where the smoke is coming from? Should there be oil in there? Please help...

risaac928

THAT DID IT ... I put a long hose down that AFM and boom started and ideled ...However getting a ton for smoke from the tail pipe. Its never done that before....PLEASE HELP....What do next....I took a step in the right direction...Please HELP....

Will post a video shortly...

risaac928

I ran a long hose down that AFM and started right up, got a very HIGH idle and a ton of BLACK smoke. Wife and kids are pissed because it got into the house. What next guys...why is there a ton of smoke. It never smoked like that before...

risaac928

Where is the "2 Sensor" - I need to jump that to see what it does...

I am thinking its the AFM, going to try to reburish it myself...

risaac928

Well I am going to attempt to recondition that AFM, unless someone can give me some better advice...

skippermccoy

Check all the vacuum lines. There are also a couple of plastic caps that are plugging off ports on the side of the throttle body make sure there still there. Mine were cracked and brittle so I replaced them with heater core plugs from the auto parts store. There is a good write up on here how to check and clean the AFM. https://rennlist.com/forums/928-foru...rebuilder.html
Also check the plug going into the AFM and the big oring.
Mine smoked bad too when I did the hose down the AFM. The temp 2 sensor is the one between the center fuel pressure reg and the oil fill on top. Just unplug it and place a wire in the connector. I am sure there is a pic posted on here if you cant find it.

depami

https://rennlist.com/forums/928-foru...ork-video.html

risaac928

Thanks Skippermccoy - Pulled out my PET CD and found the dam thing, check out the video....sure enough it has a cracked shell and looks like the PO monkeyed with it before....I ordered a cap and sesnor from Roger and your right I need to inspect all those caps. You talk about a heater core plugs from the auto parts store? I will have to go check that out...

Man when I saw all that smoke I paniced inside, I was like NOW what....I love this car and I hate to see it down, and I beat myself over not knowing enough about these cars.