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1997 Bonneville Boost Gauge

I have a low miler 97 Bonneville SSEi and the Boost gauge has changed from running pretty much straight up when not excelerating or decelerating to showing a negative manifold pressure under the same conditions.
I

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SOURCE: bonneville ssei

Fixexpert, Hondachopper, RonaldSuboc, Kevin000, Chad7, please step off, you are ALL WRONG, and your info is 100% USELESS.
If you HAD ANY experience re this issue, you would KNOW THE FOLLOWING:

Kkvesr, What you need to look for, is the main ECU ground point at the LF rocker panel rail; lift the carpet to see this, between the seat and the rocker...there are several wires going to a corrugated "star washer". If you are NOT getting a ground pulse in the RED wire, your main ECU ground, at the wire position described above, may be corroded. if so, no injection.
This is a very common problem, unique to the Bonneville.
Please advise me if this helps, and thanks for choosing FixYa.

Posted on Nov 01, 2008

  • 8 Answers

SOURCE: 1997 Bonneville SSEI Spontaneous ELECTRICAL Shutdown

try ingintion coil

Posted on Jan 06, 2009

freetek
  • 5568 Answers

SOURCE: 2004 Bonneville - Temperature Gauge is Erratic

Since there is no voltage applied with the ignition off, if the gauge is not dropping down all the way, it is the gauge that has failed.
Temperature sensors are frequent failures but they are not active when the car isn't powered up. They can be intermittant, high, low but with no power, the gauge itself should go to the minimum.  

Posted on Jan 19, 2009

localwonder
  • 6784 Answers

SOURCE: High oil pressure reading

Hi, this is a oil pressure sensor malfunction. the gauge is getting a distorted reading from the sensor. replacing the gauge will fix this issue. also, check the fuse box for blown fuses.

Posted on Mar 01, 2009

localwonder
  • 6784 Answers

SOURCE: my 01 bonneville oil pressure gauge is showing 120

HI, the oil pressure sending unit may be malfunctioning at this point. this will cause erratic readings. if your oil level is proper and there are no apparent oil leaks, you will need to replace the oil pressure sending unit. this will fix the erratic oil pressure readings.

Concerning the gas gauge. this device also has a sending unit that sends the correct fuel level reading to the gas gauge via wire transfer. this sending unit is located and attached to the fuel pump assembly inside the gas tank. replacing this device will fix this issue as well.

Please rate and god bless:)

Posted on Apr 28, 2009

ourhowse
  • 2007 Answers

SOURCE: 2000 Bonneville oil pressure gauge reads 120psi???

Has it always been like that, or just since the oil change?

Posted on May 18, 2009

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It's going to be hard to pinpoint that - with age and time, the wastegate and related parts can start to wear out, so that may need to be repositioned to keep the proper boost level. I know your car comes with a boost gauge, but do you have an aftermarket one? They're much better - the OEM boost gauge is not accurate enough to do much other than tell you whether you're in boost or vacuum. With an aftermarket gauge, you'll know what pressure you're actually making. With that, you can tweak the nut so that the wastegate opens at the proper point. Or you could get an electronic boost controller (used GReddy PRofec II units are available on eBay for less than $150) and really give yourself accurate boost control.

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