Question about Buick Grand National

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I need the wiring diagram for my 87 Buick grand national with turbo

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Looking for an Electrical Wiring Diagram for 87

turbo regal wiring diagram google it

Posted on Oct 31, 2009

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SOURCE: 87 regal ignition switch wiring diagram

Thick wires at IGN SW .... Red(s) - supply power from the battery to the IGN switch ... Pink - ignition supply ... Orange - Accessory power ... Purple most RWD sometimes (Yellow most FWD) - Starter .. Did I miss any? It's been a while The thin wires on the IGN swich are for key sense and VATS (if applicable)

Posted on May 08, 2009

  • 2 Answers

SOURCE: VACUUM HOSE DIAGRAM FOR 1987 BUICK REGAL GRAND NATIONAL

sign up at turbobuick.com (it's free) then find out who lives near you and check out their car...take some pictures and notes...btw there are a ton of members and I'm willing to bet someone lives near you and most are more than willing to help out a fellow turbo buick owner..or try the link at the bottom...any problems shoot me an email at Mansfieldroof@aol.com

http://www.installationinstructions.com/vin9/vacuum%20hose%20system.pdf

Posted on Jun 16, 2009

  • 31 Answers

SOURCE: 1987 Buick Grand National losing power, changed

Symptoms Like this usually point to the Fuel pump.

Also these cars suffer from inferior wiring to the fuel pumps and a substantial Voltage drop is noted between the Fuel pump relay and the Pump harness.

The fix for this is a "Hotwire" Kit

Fuel pump kits with a Hotwire kit are available at numerous Buick performance Vendors but the best stuff in my opinion come from Racetronix,com

You should also change the Prom Chip in the ECM to a modern
Chip from Turbotweak.
This will improve driveability greatly.

HTH

Posted on Jun 13, 2010

  • 31 Answers

SOURCE: 87 buick grand national power antenna went up, but

There is a cable and motor that actuates the antenna, the cables break on these all the time.

you can get replacement cables at nos4gn.com

the passenger fender needs to be removed to access the antenna assembly.

Posted on Aug 10, 2010

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How do I install a boost gauge on 1987 Buick grand national?


If you have to ask, you may not be competent to do it! Just kidding. Boost gauge is reading intake manifold pressure, so sender can go anywhere between turbo and intake ports into cylinder head. Often you can find a port into the intake which is plugged and not being used.

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Im looking for an engine harness w or w/o computer to run a 3.8 t type engine


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87 buick grand national power antenna went up, but won't go down.


There is a cable and motor that actuates the antenna, the cables break on these all the time.

you can get replacement cables at nos4gn.com

the passenger fender needs to be removed to access the antenna assembly.

Sep 26, 2009 | 1987 Buick Regal

1 Answer

1987 Buick Grand National losing power, changed


Symptoms Like this usually point to the Fuel pump.

Also these cars suffer from inferior wiring to the fuel pumps and a substantial Voltage drop is noted between the Fuel pump relay and the Pump harness.

The fix for this is a "Hotwire" Kit

Fuel pump kits with a Hotwire kit are available at numerous Buick performance Vendors but the best stuff in my opinion come from Racetronix,com

You should also change the Prom Chip in the ECM to a modern
Chip from Turbotweak.
This will improve driveability greatly.

HTH

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Put new fuel pump in 87 buick grand national now it will not turn over


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Aug 13, 2009 | 1987 Buick Regal

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VACUUM HOSE DIAGRAM FOR 1987 BUICK REGAL GRAND NATIONAL


sign up at turbobuick.com (it's free) then find out who lives near you and check out their car...take some pictures and notes...btw there are a ton of members and I'm willing to bet someone lives near you and most are more than willing to help out a fellow turbo buick owner..or try the link at the bottom...any problems shoot me an email at Mansfieldroof@aol.com

http://www.installationinstructions.com/vin9/vacuum%20hose%20system.pdf

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Buick Grand National vacuum brake conversion


^ Turbo Cars have Lots of Vaccum, Where did you ever get this idea from. I have personally converted 10+ Turbo Buicks to Vac brakes.

Make sure the check valve is okay at the booster. but it does sound like you have a bad booster.
Also, did you change the brake pedal to a Vac brake pedal?
They are not interchangeable.

Also, you should not have drilled the plenum, you can get a vaccum block to replace the plastic one on the top of the plenum with a vac brake port.

May 14, 2008 | 2006 Buick Grand National

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