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GT failed AirCare, need advice. |
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Patrick 
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Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 5 |
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 Posted: 20 November 2008 at 9:43pm |
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Dave, are you perhaps getting that confused with the MAT (Manifold Air Temperature) sensor? If so I believe my MAT is fine, as on a cold start it registers exactly the same ambient temperature as the coolant temperature sensor which feeds the ECM. The MAT then proceeds to show a higher reading as the temperature under the decklid increases. |
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Capt Fiero
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Founding Member Joined: 12 February 2007 Location: Canada Status: Offline Points: 4039 |
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Posted: 20 November 2008 at 9:58pm |
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Sorry my bad, brain was in the wrong place. My Caddy Fiero has an intake air temp sensor, that is actually in the intake manifold. The Fiero sensor is on the air cleaner box. Sorry the last couple days have been way to long for me.
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Capt Fiero
88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
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Patrick
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Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 5 |
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Posted: 20 November 2008 at 10:01pm |
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Hey, no problem. I appreciate the fact you're trying to be helpful.
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Patrick
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Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 5 |
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Posted: 04 December 2008 at 9:11pm |
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The good news... I passed AirCare !!!!!!!! The readings were relatively good...
I went to the Surrey AirCare station today (Thursday afternoon) and was hoping they'd do the same as they did with Dave and NOT do the driving test due to Fieros being "too low" for the dyno as reported Here. However, they did the whole test and the GT passed easily enough. And keep in mind this was with NO cat. (Well, there is a cat on the car, but it's completely hollow!) The bad news... Even with the GT running just fine (supposedly) and passing the AirCare test no problem, the gas mileage is still absolutely pathetic - 14.36 MPG with my last fill up, and that's with me driving like an old lady. I've been taking it ever so easy on the gas. I'm even putting the car in neutral every time I slow down and stop so that the transmission isn't putting any drag on the engine while I'm sitting at a light. I may end up re-connecting the EGR and re-installing the stock PROM to see if that helps as this just isn't good enough.
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Capt Fiero
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Founding Member Joined: 12 February 2007 Location: Canada Status: Offline Points: 4039 |
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Posted: 04 December 2008 at 10:03pm |
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By your readings, you are not running as rich as you were before, but HC are still high, if you have already replaced the O2 I would start thinking about getting a set of injectors rebuilt.
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Capt Fiero
88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
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Patrick
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Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 5 |
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Posted: 04 December 2008 at 11:03pm |
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The O2 sensor is brand new, but yes, the injectors are possibly in need of a proper cleaning/rebuilding as this GT had been sitting for six years when I bought it.
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Capt Fiero wrote:
