I think my egr is bad. The idle is rough, anywhere from 500-1500. It starts cold but chokes out, and when cruising it bounces 500 RPM when going 30mph. At idle there is a high pitched whistling noise coming from the valve. I can here it a when driving, but when I hit the throttle the noise disappears. Is the egr bad?
The car didn't throw the egr code, just 34, the MAF.
What type is it(ported, pos pressure,neg pressure)? The engine is a '89 305 TPI, the car and ECM is a '85 TA. What do you think the problem is?

 

Um, I think the problem is the MAF....

 

You will get a '34' with a large vacuum leak, such as an EGR leak. There are also other possible causes for your symptoms. What is the idle vacuum reading?