'87 505 Turbo N9TE Boost Gauge Adjustment or Calibration

[MrPeugeot]

Hello,

Now that I once again have a working turbo in my car, I am determined

to have a working turbo gauge. The gauge itself in the dash works, but

it was receiving no signal from the sending unit.

To that end, I replaced the vacuum line between the intake manifold

and the boost gauge sending unit. Gauge still didn't work.

On eBay last week, someone was selling a NOS boost gauge sending unit

-- but for an '88-up 505 Turbo (Peugeot part # 1628.A5 -- see the attached pic). I figured...worth a try.

I put it in today, and the gauge now responds to boost. However, it

will only go between the first white line and the second white

line...not even a quarter of the way up the scale on the gauge.

(At this point, I'll mention that I have connected a calibrated

auxiliary turbo gauge to make sure that the wastegate was working

properly and that I wasn't overboosting. However, I want to have a

stock look to the dash, and just want to make sure the factory gauge

is in the right neighborhood).

I noticed on the boost gauge sending unit that there is a screw on the

front, right by the connection for the vacuum line. Is this for

calibration? If so, will I be able to calibrate this to work correctly

with my car, or is there a big enough difference in the boost gauge

senders for the N9TE vs. N9TEA that it just won't work?

Thanks,

Adam

'87 505 Turbo S 5-speed

[august]

just posted this on peugeot-l

i *think* the senders on the N9T, N9TE, and N9TEA are all the same.

the adjustment you are talking about can adjust the calibration. if i

remember right, screwing it IN will decrease the sensitivity.

how much boost is your calibrated gauge showing? have you tried

another tach / boost gauge?

[MrPeugeot]

I am showing approx. 10psi on full boost.

how much boost is your calibrated gauge showing? have you tried

another tach / boost gauge?