Question about 1997 Pontiac Bonneville
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.
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Posted on Jan 02, 2017
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
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
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
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
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