HI i am re posting this is electronics prob belongs in this forum.

I am having problems with my TA,and I recently purchased a Autoxray 6000 so that i could set Tps and the dwell. Well scanner says vehicle not responding. So i tried the paperclip method and no flashing check engine light. So i then checked ecm fuse and its good, then i checked the SES bulb and its good. Well i am out of ideas and i am in need of help.

Also SES bulb doesnt light when key is turned on or car started. I also tested for continuity of ground with Test Port B and the volt meter beeped. But it did not when i tested port A.


The TA runs and drives fine it just gets 11 mpg and 14mpg on the highway. That is why i purchased scanner to i could adjust the CCC carb. Any pointers would be great.

 

Should I replace my computer??

 

If you followed all the steps for the OBD-I I see no reason why the vehicle would not respond. Did you check to make sure all the wires to the OBD-I port were snug, connected, and free of dust?

 

i don't know if it's like the newer OBD2 cars, but check the fuse for the cigarette lighter..

 

thanks for the replies ill check into to both of those

 

 

Ok cool I'll check that out too. Thanks for the help

 

On my harness C is pink and black, and it pops fuse each time. And this harness has one connector with 12 and one with17. ???

 

You can check and set your Dwell by using a dwell meter hooked to the green connector on the passenger side firewall in the engine bay. You can also check your TPS voltage by hooking a volt meter to the TPS connector, just take a reading off the connector itself (you'll need to stick a pin through the shielding to get a read strait off the wire itself or backpin though the back fo the connector (It will fit, barely if you go in under the plastic of the connector).

Do you hear clicking in your engine/carb area when you turn the key to "run", without starting the motor?

 

check to make sure the ecm memory wire is connected by the battery and then the ground wires behind the heads and at front of intake are tight.

 

Checked wire and yes it does click.

 

Ok, the clicking means the MCS in the carb is working.

 

Do you need to have the emissions tested? Does it pass the emissions? Since the MCS is working, I wouldn't worry about the TPS, those are factory set and if it's off, your carb probably needs to be rebuilt.

If you get a dwell meter you can check how the car is running and how the MCS is locating thus metering the fuel. If you haven't, I'd probably swap out the O2 sensor while your at it. Are you leaking fuel? If your mechanical fuel pump on the engine is leaking fuel this could also cause your low mpg.

 

Already had carb rebuilt and also has new mechanical and pusher electric pump. And no I don't need to pass emissions. Last year I was able to check codes and the light did light up.

Also it's not leaking any gas, just want better mileage. Also already have replaced o2

 

Sounds more and more like your tune is off. My 320hp 350 getes 14mpg combined, 12 city about 17-18 highway. CC Qjet, full emissions set up and air conditioning. Since the carb as rebuilt, it needs to be re-tuned on the car, was that done by a shop or is that what you're trying to do now?

 

Yes I am trying to tune carb, and basic rebuild. It was a carry in and pick it back up rebuild. It's the reason I purchased scanner so I finish the tune up.

 

hey i was wondering if u cud help, my ses light goes goes crazy whilst during a normal start up AND when connecting A and B in ALDL port and as lights flickering (as tho theres a bad wire)the engine drops revs, does this mean its ecm problem or electrical, my car 86 iroc TPI 5.0 has been 'broke' for 1 WHOLE YEAR NOW and its killin me im over in scotland and no want wants to work on her plz help heres a vid
p.s ive changes plugs, leads, 02 sensor, coolant temp sensor and thermostat, new battery.car ran perfect till it was out for a hard drive (which wasnt common) my gut feeling is its electrical i cant get any codes

this second vid is with the A AND B bridged, it wont read a code
http://www.youtube.com/watch?v=InNYu...3&feature=plcp

 

You need to check out this link.

Scotland board for the Pontiac Owners club UK

You can hopefully find someone near you that can help if you can't figure it out.

 

thank u i will