Turbo Boost sensor
- Thread starter GN owner
- Start date
gunslinger
Member
- Joined
- Nov 21, 2005
Close...it is the MAP sensor.
mikestertwo
Well-Known Member
- Joined
- Sep 13, 2006
It's a black rectangular sensor mounted on the right side inner fender with a vacuum hose and electrical connector with 3 wires going to it.
That's not what the OP stated.....
mikestertwo
Well-Known Member
- Joined
- Sep 13, 2006
Digital dash does not have a boost gauge.
Before you buy another MAP sensor..
Get a digital voltmeter and probe the center wire on the 3 pin plug.. that will be the signal wire coming from the sensor. The stock sensor is a 2 bar MAP sensor. Ignition "ON" and engine not running the voltage on the green wire =2.3 volts dc.
If the green wire reads 2.3 volts.. then the sensor is not the problem but the boost gauge on the dash.
If it reads way higher like 2.5..2.7...2.9.. etc.. then confirm 5 volts DC on the gray wire of the plug.. and confirm ground on the black wire of the plug. If you have 5 volts on gray.. ground on black.. still reads higher.. then you have a bad MAP sensor.
Hope this helps.
Get a digital voltmeter and probe the center wire on the 3 pin plug.. that will be the signal wire coming from the sensor. The stock sensor is a 2 bar MAP sensor. Ignition "ON" and engine not running the voltage on the green wire =2.3 volts dc.
If the green wire reads 2.3 volts.. then the sensor is not the problem but the boost gauge on the dash.
If it reads way higher like 2.5..2.7...2.9.. etc.. then confirm 5 volts DC on the gray wire of the plug.. and confirm ground on the black wire of the plug. If you have 5 volts on gray.. ground on black.. still reads higher.. then you have a bad MAP sensor.
Hope this helps.
Update
After my engine backfired and the turbo boost gauge started showing 2 leds lit all of the time I thought that somehow the pressure caused by the backfire somehow damaged the boost sensor. What I found today was the vacuum/boost line going to the boost sensor was blown off of the sensor by the backfire. The cause is most likely due to the aged and deteriorating rubber coupling end pieces.
Does anyone know where I can buy these rubber pieces on the ends of the nylon vacuum tubing or do I have to buy the complete tubing assy?
After my engine backfired and the turbo boost gauge started showing 2 leds lit all of the time I thought that somehow the pressure caused by the backfire somehow damaged the boost sensor. What I found today was the vacuum/boost line going to the boost sensor was blown off of the sensor by the backfire. The cause is most likely due to the aged and deteriorating rubber coupling end pieces.
Does anyone know where I can buy these rubber pieces on the ends of the nylon vacuum tubing or do I have to buy the complete tubing assy?
