Shadow

iTrader: (15)

I'm having a little trouble with passing emissions right now. I keep getting a CEL for MAP/Barometric, which is the boost sensor. The problem started a few months ago, every time I get near 0 on the boost gauge, I throw the code. It didn't do it before, and it didn't do it while I was supercharged. I reset it on the scanner, but I can't drive the car long enough for the ECU to show ready so I can pass emissions before the code comes back.

So question is, how do I test this sensor to see if it's still functioning? Or, do I just replace it?

slimer

iTrader: (13)

try a one way valve in front of it. vacuum canister maybe?

i am having the same problem with mine. when i went back to na for a little while, it went away. now its back. ugh.

turbomax97

iTrader: (6)

any update on the situation shadow?

Shadow

iTrader: (15)

Not yet, car is in the shop right now for the motor swap. When it gets out, I'll try the check valve. We put a multimeter on the sensor and the readings are fine from it, so I guess it just needs a check valve.

Broaner

iTrader: (10)

I've had mine off for like a month with no codes. I've been wondering why. Maybe you should just pull it to see if you get codes.

Shadow

iTrader: (15)

That's weird, the instant we pulled the plug on mine it threw a MAP code.

98SEBlackMax

iTrader: (9)

I think the '95s are less sensitive to emissons problems. We've found that running a '95 ECU makes for less or no emissons codes on newer 4th gens with gutted emissons equipment.

In your case I would try running a resistor instead of using the MAP sensor, it will render that sensor useless but MAP is only used for diagnositic purposes. Looking at the FSM it looks like a variable resistor would work great, you could tweak the resistance until the MAP reading is something close to stock.

Broaner

iTrader: (10)

That is great to here. I've been wondering for a while why I'm having no troubles. Sweet. Now I can finally throw all the junk in the trash unless somebody needs a 95 MAP/Baro(They don't say boost sensor like the 4.5 gens do.)

turbomax97

iTrader: (6)

Actually - pm me with what all emissions eq't you have... if you're getting rid of it anyway - i'm interested.