NEED HELP WITH ENGINE IDLE PROBLEM!!!

[gofe777]

Posting for a partner so don't expect replies right away thanks ...

L- touring 5a-fe idle problem . Idle drops when ac is turned on then starts to fluctuate after a little while, Changed 5 step up units, bought a new original coolant temp unit, then changed complete throttle body, serviced injectors, tried a different brain box, all was done by electrician and mechanic. This is the original engine never changed or re-wired.
Any help will be greatly appreciated... thanks.

[gofe777]

up top

[hyperdude]

op yuh know ah lil vacuum line could cause that
any way yuh never went and do ah diagnostic?

[racedriverpro]

Idle control unit? Throttle body serviced?

[gofe777]

op yuh know ah lil vacuum line could cause that
any way yuh never went and do ah diagnostic?

did all that.. no change in problem

[gofe777]

Idle control unit? Throttle body serviced?

changed and serviced ... same problem..

[racedriverpro]

Cud be a vacuum leak as previously mentioned.

[Master of Disaster]

Step up unit , check and see if its working , by pass it and see , just run a loop and see what happens

[gofe777]

Cud be a vacuum leak as previously mentioned.

changed all vacuum lines

[gofe777]

Step up unit , check and see if its working , by pass it and see , just run a loop and see what happens

all this was done

[gofe777]

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[gofe777]

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[gofe777]

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[gofe777]

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[gofe777]

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[anthonemorris]

Not sure if this may help. Have u checked your fuel pressure ( from in tank to filter to regulator to return line)? Also u said u changed throttle body but I don't know if u cleaned the manifold as well. If car idles normally without ac then the fluctuations are only under load and may be electrical. Changing the brain won't help if something is bad or malfunctioning. I'd suggest checking the pressure switch

[gofe777]

Not sure if this may help. Have u checked your fuel pressure ( from in tank to filter to regulator to return line)? Also u said u changed throttle body but I don't know if u cleaned the manifold as well. If car idles normally without ac then the fluctuations are only under load and may be electrical. Changing the brain won't help if something is bad or malfunctioning. I'd suggest checking the pressure switch

Hey thanks for the info.. ill be sure to pass this on and give feedback..

[anthonemorris]

Not sure if this may help. Have u checked your fuel pressure ( from in tank to filter to regulator to return line)? Also u said u changed throttle body but I don't know if u cleaned the manifold as well. If car idles normally without ac then the fluctuations are only under load and may be electrical. Changing the brain won't help if something is bad or malfunctioning. I'd suggest checking the pressure switch

Hey thanks for the info.. ill be sure to pass this on and give feedback..

No feedback yet?

[gofe777]

Not sure if this may help. Have u checked your fuel pressure ( from in tank to filter to regulator to return line)? Also u said u changed throttle body but I don't know if u cleaned the manifold as well. If car idles normally without ac then the fluctuations are only under load and may be electrical. Changing the brain won't help if something is bad or malfunctioning. I'd suggest checking the pressure switch

Hey thanks for the info.. ill be sure to pass this on and give feedback..

No feedback yet?

nah bro nothing yet.. padnah didn't get time to try it.... but he will.. thanks