1999 Pontiac Grand Prix GTP Logo

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Elizabeth Carr Posted on May 10, 2015
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Can you give me a link for an engine diagram for a 1999 Pontiac Grand Prix GTP

Need to replace a bypass hose the comes out from under the cone on the supercharger, I need to see where it's located exactly, so I need a detailed engine diagram

  • Raymond Wagoner
    Raymond Wagoner Jan 04, 2017

    there is no hose there, but a plastic elbow, which should be replaced with an aluminum one..There are 2 of these 1 you are talking about that goes from intake to tensioner and 1 that goes from tensioner to water pump, the tensioner is held on by 3 15mm bolts..you also have to remove alternator which is held by 3 15mm bolts..If they are plastic they break off a little piece in water pump and intake which you have to dig out which is easy done. Clean the pieces out after you take tensioner off.

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1 Answer

Marvin

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  • Pontiac Master 85,242 Answers
  • Posted on Jan 04, 2017
Marvin
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5 Related Answers

Anonymous

  • 611 Answers
  • Posted on Jun 13, 2008

SOURCE: where to locate wiring diagrams for a 1997 grand prix gtp

try intense-raing .com

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Curt Downs

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  • Posted on Oct 19, 2008

SOURCE: serpertine belt diagram

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Copyright © 2002 Delmar, All Rights Reserved.

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Marvin

  • 85242 Answers
  • Posted on Jun 01, 2009

SOURCE: THERMOSTAT REPLACEMENT

You will need a 1/2" socket with ratchet, and a 1/2" wrench for the actual removal of the thermostat housing. First, remove the air duct from the air filter housing and the air intake connection to the engine. Set aside. Next, remove the upper radiator hose from where it connects to the engine by loosening the hose clamp. At the other end of this part where the hose was removed from is the "L" shape that houses the thermostat and bolts to the engine. This part (housing) has two bolts. The top bolt will require the use of an extension on your ratchet which you will need to insert between the water bypass pipe and the exhaust heat shield before coupling with the 1/2" socket. Loosen the top bolt. The bottom bolt will require the use of the 1/2" wrench, as the socket will not fit due to the location of the heat shield. NOTE: the bottom bolt only needs to be LOOSENED and not removed, as the housing has an open "C" at the lower bolt location allowing the housing to pivot upward from that bolt. After removing the top bolt and loosening the lower bolt, you can pivot the "pipe" end of the housing downward and carefully maneuver the housing out of its location. You should now see the thermostat. Clean surfaces of the engine and housing well. Insert the new thermostat with the "spring" into the engine and the "bell" outward. Be sure the seal is seated properly into its socket in the engine. Position the housing carefully, making sure not to move the thermostat out of position. Reassembly is the reverse of removal. In my case, I did not use any gasket seal. The thermostat has a rubber seal on it which works well on its own. Adding gasket seal may make removing the housing in the future more difficult

c17hydro

Greg Bernett

  • 2993 Answers
  • Posted on Jun 30, 2009

SOURCE: Where is the egr valve on a 1999 pontiac grand

Front of the motor....

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Looks like this:

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Anonymous

  • 5 Answers
  • Posted on Oct 28, 2009

SOURCE: I need to specifically know

Not sure what year your car is but on 2004's the low side is low behind the engine on the pax side. Near the alternator.

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