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On the front left of the engine.
140 Hp
The vacuum hoses are very important in a 1991 Beretta. Without the vacuum lines, the engine will not run properly, and the power brakes will not function.
It does not have one. That's why you can't find it.
The idle speed is set at the factory and is NOT adjustable.
If you are talking about the speed limiting of the vehicle,that is part of the programming in the computer.
1991 probably doesn't have a crank sensor, it probably has a reference in the distributor.
where the map sensor on 98 blazer?
No.
No changes at all. Check 60degreev6.com for more info.
Underneath the dash by glove top of panel
That year did not have a MAF sensor / Mass air flow sensor.