More problems

I want to give all an update on this issue on MY87. To give you a full understanding when this problem begin after replacing engine mount, power steering line and oil pan gasket on Labor Day weekend. After getting the hatch lock and vacuum lines replace I drove from Chicago, IL to Green Bay, WI for the weekend. I had no issue driving for 3 hrs until I got on the Dyno. My hesitation, hard start and idle problems are back, it shows car running very rich. We diagnose the car all weekend long and still puzzled what we found. We took the spark plugs out appeared bad but don’t appear to be the problem. Check compression it we got 210-215. We decided to replace the spark plugs and MAF since we had a spare. The car started and running good. After a while car started idling irregularly running poor again. We check fuel pressure and spark which are good. When the car won’t run we have spark but injectors we not working. So we changed out with new relays and same hard start. Check and cleaned the ground harness. We decided to swap LH still no improvement. We had spares of EZK we went ahead and replaced the EZK. First EZK no improvement but if we use it on another 87 it works fine. We tried the second EZK it was happy all the issues gone. Now here is the kicker we took the first and my supposedly bad EZK use it on another 87 and no issues what so ever although we did not take the car for a drive just let it idle. We did not have the irregular idling or hard starting that I get on my car. I drove back home using the spare EZK my buddy let me use temporarily until I get a replacement. I stop at rest area and restarted the car; it took 3 cranks before I was on my way. Just to clarify 4 of these 928 buddies helping me out are extremely familiar with 928. Any comments or suggestions before having my EZK rebuilt? Does anyone know of where I can get my EZK rebuilt? Thanks in advance

Rich Andrade is a 928 OC member www.electronikrepair.com/

Ohhppp Stan beet me before I finished and his suggestion looks like the answer

Dam...... that post took a while. :confused:

I have no experience with the 928 in this way, but from reading your post I would suspect that
your (bad one) did not act up (in the test car) because the circuit board sat long enough to cool.
Think of the board and 4 screws holding it down. with heat it will want to twist and add a bump from the road to pop and open the circuit.
Maybe not the actual problem that you have but?

All i am saying is i would want to verify and find the problem before i sent your suspect EZK out.
Not knowing what has failed would bug me.
Also (not sure but?) the loaner EZK may need to relearn or be programed to your car??
Like I said I don't know the car yet but as a mechanic I would suspect that this could be your glitches that you are still experiencing.
I hope you find your problem and that someone here is more helpful.

Brad

http://t0.gstatic.com/images?q=tbn:ANd9GcRKP4xLXXsziu9mXiIIPf7o3U4SNsmehSd-NmZFDtWviI7K1uE&t=1&usg=__3oTnxuQFmKmxYTkX4eMuAIcbtTc=http://t3.gstatic.com/images?q=tbn:ANd9GcQD0P6coxxu0pDznIQM4WTceUhZ0NLftsv0RptQ8i4NV5FmQBI&t=1&usg=__UunxA726sOWHY_i2gZU56pOU0T0=

Brad, I agree with you. I’m not sure that getting my EZK rebuilt would resolve the issue because the other EZK we used to test is a good one. At this point it’s the only way I can get my car running. My buddies have shark tuners and told me that we didn’t need to reprogram the EZK because it came from the same model year. I wish there more I can do before spending the $$$. I’ll wait around and see if any one else has other ideas. Thanks Ariel Trajano

Stan.Shaw@Excell.Net;1581 wrote: Rich Andrade is a 928 OC member www.electronikrepair.com/

Thanks Stan. Side note when I try to "quick post" the fields are grayed out and can type in the box.

rluvsporsche;1586 wrote: Thanks Stan. Side note when I try to "quick post" the fields are grayed out and can type in the box.

Yes, someone else mentioned that, and apparently it is not recommended to enable that as the software can get confused as to which post you are replying to.