Originally Posted by Mongo

Well it wouldn't hurt to have a new L-Jet relay (XVI) and Fuel Pump relay (XVII).

These cars also had a cold start system with a cold start injector. I have no experience with the cold start system on the car, but it could also cause numerous running issues. Some people have disconnected the cold start injector to troubleshoot. Does anything look disconnected under the intake manifold?

Originally Posted by gingy

Hey, all
This is my first post here, so I'll start by giving a little back story. I'm 17, and picked up a 928 a couple of weeks ago. I've done quite a bit of work on it so far. But, it will not idle. The only way it will run is with starter fluid, or if I disconnect the Mass airflow sensor. I have cleaned all the plugs, replaced the fuel pump, and filter as well. I also tested the relay for the fuel pump, and used a noid light to make sure the injectors are getting signal. I am getting fuel and spark because it idles at 2,000 rpm when the airflow sensor is disconnected or if the door of the sensor is propped open. I just bought a new MAF online, and I'm still having the same issue. I am pretty good with engines and repairs, and doing all the work on it myself. Any tips or leads in the right direction would be greatly appriciated. Thanks in advance, guys. It's great to be part of the club.

Originally Posted by Imo000

Mong, stop giving out guess advices or recycled information that cause nothing but confusion.

Let's start from the begining. Does the engine run at 2000rpm on it's own (when the AFM) is removed or do you have to keep the throttle open? What did the air filter look like when you removed it? Any sign of a field mouse nest?

Originally Posted by Imo000

Mong, stop giving out guess advices or recycled information that cause nothing but confusion.

Let's start from the begining. Does the engine run at 2000rpm on it's own (when the AFM) is removed or do you have to keep the throttle open? What did the air filter look like when you removed it? Any sign of a field mouse nest?

Originally Posted by mark kibort

if you can run the car with the "barn door" proped open, then its probably the TEmp II sensor being bad.

you can measure its resistance and it shoud be something like 1500ohms.

stop calling the AFM a MAF, as that can be confusing.. you have an 83, so that is usuaing the L-jet AFM for air flow metering.

the fact that the barn door of the AFM being open helps it run, shows it lacking fuel. the temp II sensor if not working, will not give proper mixture and thats why the opening of the barn door works. use a screwdriver and push it through.. does it run? if so, its tempII

Originally Posted by mark kibort

you should stop asking silly questions.. air filter check? really? wouldnt matter if it had diapers i the air box. that wont make it not start.

Originally Posted by gingy

Yeah, it runs all by it's self with the AFM removed, but will not stay running as soon as it's plugged in. The air filter was in great shape, and there was a nest(at least I think that's what it was) under where the AFM was, but no sign of chewed wires.

Originally Posted by Imo000

If field mice set up camp in the filter box, they probably made their way down into the rest of the intake manifold and stored outer stuff in there, choking the engine. Unlike you, I've seen this in person and is documented here, that's why I asked. Start with the basics, air, fuel ignition and see where that leads. Easiest is the air filter check and go from there.