Question about 1987 Buick Regal
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Posted on Jan 02, 2017
SOURCE: vaccum lines
There is a diagram for that system under the hood above the radiator, the 2 lines go to 2 exhaust tubes, one is pressure and one is reference, the hose size is different so you can't get them mixed up, the EGR "box" is the EGR pressure transducer and the signal from that controls the EGR through the Power Train Control Module AKA the PCM. You have to use special
Hi-temperature silicone rubber hoses from the Ford dealer, ordinary rubber hose will just burn up in short order, they are around $15-20
Posted on Aug 17, 2008
There is a Vaccum diagram in that manuel.
make sure you are looking at the correct engine diagram
You mostlikely have the A20A3 or A4 that is the diagrams you should be looking at.
Posted on Nov 03, 2008
I don't have the diagram for vacuum lines for the 1988 model year, but I have one for the 1989 model year 2.5L engine VIN E Throttle Body Injection:
Posted on Aug 03, 2010
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