audiqtNewb

where do i find the pressure transducer on a 87 audi5000 cs, also where can i buy one

Katman

It's in the ECU, and I'm not sure it's a 'replaceble' part as such.

Not to say that it 'can't' be replaced though! :-)

Should be able to check by looking at boost/intake pressure on display, and comparing that to a mechanical boost gauge that you've temporarily connected.

If the readings match, then you sensor should be OK. If not, then 'further investigation is required'...

jurq

on the vac line that runs to the ecu, which is located near the front passenger foot well. If the car is making full boost (1.42 bar absolute or 6.1 psi) on the pressure gauge, then the pressure transducer is likely working fine. The pressure tranducer is the component of the ecu that translates manifold pressure so that the ecu can do it's fuel/boost/timing thing. Does the car feel like it's making boost? When you stomp on it in third, does the car pull hard to around 5k rpm? Any running and/or idling issues?

If you don't already have one, suggest getting a Bentley factory service manual or at least a Haynes repair manual.

HTH,
Jim

audiqtNewb

the car has no running or idling issues, its nice and stable and starts right up unfourch i havent been able to open it up in third becuase there are no plates on the car until i get my new title mailed from massachusetts and my old plates transferrd, do you have any info on installing another analog boost gauge, thanx for any info.

Kneale Brownson

Pressure transducer replacement is a regular part of quality chip upgrades to the ECU. There are other ways to "trick" the ECU into thinking it is at safe pressure levels, but a new transducer is the better approach.

icon73

<ul><li><a href="https://forums.audiworld.com/v8/msgs/48158.phtml">but here is a link</a></li></ul>