Ok i have read as much as i can i have a 90 GXL N/A, it has bad problems idleing when it is warmed up it pulses around alot but sometimes it dosent do this, but other times it dies completely, and when u turn the A/C on the car boggs down and dies completely, i have did the two checks on the BAC, and it had 12.1 ohms, and it clicked when u jumper it over, so the BAC isnt the problem i dont think, what else is there i can do, and please try not to use abbreviations because i really dont know what they mean.

What can it be, what can i test,

Thanx Justin

 

Next thing you may want to check will be the Air Bypass Relay and Air Bypass solenoid, in the FSM (it sounds like you have a manual, just look them up). These guys are electrically run from the ECU, and kick in when the loads are beyond the BAC's capabilities, and allow even more bypass air for idle purposes.

What part of Texas you in?

 

Just because the BAC tested out fine in those 2 tests doesn't mean its working correctly. I would at least take it off, clean it out well, and lubricate it. See if that helps. Also make sure that you are getting power at the BAC plug, and that the contacts are good.

-Joe

 

i real close to Waco, well see i just ran the car and i turned the A/C on and for a split second the rmps went up then it died on me, and i went up the road and when i parked the idleing plused for a sec then i leveled out.but yeah i live real close to waco,u?

 

Ok i have the Haynes manuel and i cant find Air Bypass Solenoid or the air bypass Relay, in the glossory where would those be listed in the book, what are they under, or what is another word for them and what is FSM.??

 

'Bout 50 miles north of Houston...About as far away from the overpopulated, crime ridden, foreign language bullshit as I could get and still manage to drive to the airport for the job

That stuff should be in the Haynes, in the same section as the BAC check...

FSM is factory service manual, available online at TEAMFC3S.ORG

Also heed overdriven's advise, and make sure the BAC is even getting voltage (you need to download the wiring schematics, too, since you now own an electrical nightmare)...

 

so u would suggest taking the Bac off and cleaning it up and putting a new gasket on, and i read in the manual that if the Air Bypass Soenoid valve is messed up that u have to take it in to get it checked, in other words u cant just replace it

What makes the car idle up when u turn the a/c on???