aldl port

[danny/'87]

is the ground on the aldl port constant? i am having problems with my computer(loose connection somewhere) and was curious if this was a ground for the computer.

 

[Eagle85C4]

You need to pose this question of either Ken or Vigman....

 

[danny/'87]

??? anybody?

 

[-=Jeff=-]

I am pretty certain the ALDL Ground is constant..

WHat scanning software are you using?

I use EASE and they had that very same problem with one version

 

[Ken]

Sorry, just now saw this thread. Judging from the wiring schematic, the ALDL, port "A" appears to be a constant ground to the engine block.

_ken

 

[scorp508]

Yes, the ground should be constant.

 

[vigman]

Ground is ground

UNLESS

the actual ground lug is cooroded!

Vig!

 

[danny/'87]

thank-you all for the replies, i am/was having trouble with the check engine light staying on and when i would check for codes nothing would happen-the light doesn't flash. i was suspect of the port but didn't want to fry anything until i knew. today (1-5-03) i discovered the smaller connector on the computer has a bad connection, and when moved the light goes out but the engine runs rough. any tips? i bought the car with the light on so i don't really know how long this situation has been going on. thanks again and hope to hear something soon.
thanks, danny

 

[Eagle85C4]

Check all your connectors as if one causes a problem...there may be more. Also check your grounds...when in doubt ask Vigman for the locations. Then disconnect the negative battery cable for about 5 minutes. Then reconnect and go for a drive, make sure you get engine and oil up to temp....then see if you get the light and what codes may appear. Need any more help ...just ask...Good Luck

 

[danny/'87]

thanks, i just came in from checking the connection. i ran the engine for a short time and drove around the block, doesn't run too good but the light stayed off. i tried to check the codes and only got a code 12. go figure.

 

[Eagle85C4]

Time to pop the hood and check everything...all connections, vac lines, pcv, injector connectors....etc. When was the last time you ran any injector cleaner into it? Mine started running a bit rough...I went a put a bottle of Lucas Brand injector cleaner and by the second tankfull she ran better then ever. Now I throw some in once every 2 mos for the heck of it.

 

[EricVonHa]

If that connector on the scanner/pc is d.o.a. You may want to borrow a buddy's scanner to get some consistency with troubleshooting. That thing will drive you bananas the way it is right now.

 

[danny/'87]

it's not the connector on the scanner it's the connector on the car's computer. i tried to check why the check engine light was on and the light never went out-not blink or anything. while driving down the road i would hit some bumps(unintentional) and the light would go out leaving me with the impression that maybe the ground or some wire was loose/bad. i noticed the car had an alarm system before and now it does not. i am not sure of what may have been disconnected when the alarm was removed, at least they did not take the l.e.d. out leaving a hole. also while the check engine light is on the cooling fan is on and when i get a good connection and the light is out the fan is off but the engine runs rougher. i will take this info you have given me and attempt to correct these problems. also when i check for codes(good connection) all i get is a code 12. this is driving me nucking futs, anyway thanks again