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Mystery problem with car..

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Old 07-30-2008, 07:54 PM
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Originally Posted by SCCS2K,Jul 30 2008, 10:20 PM
have you done compression/leak?

my off-the-wall guess would be...hmm...coilpacks maybe? you've actually got much of the obvious stuff covered.
No comp/leak test yet. I want to see if I can take care of it the cheap way first
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Old 07-30-2008, 07:55 PM
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Originally Posted by Slows2k,Jul 30 2008, 10:17 PM
Non existent.. The BARO sensor is built into the PCM. Can't check it's votage without a high dollar scan tool.

Have you checked fuel pressure?
Haven't checked fuel pressure yet. I'll probably swing by a local repair shop that has a better scan tool and see what's going on. What should I be looking for on map/baro voltage?
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Old 07-31-2008, 01:53 AM
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Did you try changing your air filter?
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Old 07-31-2008, 03:17 AM
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Originally Posted by INDYMAC,Jul 31 2008, 04:53 AM
Did you try changing your air filter?
it's been cleaned recently. i don't think it got stopped up already.
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Old 07-31-2008, 04:15 AM
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MAP and BARO volts should be within .02V of each other, usually they will be around 2.5V, depending on your altitude above sea level. If you have MAP at 2.4V and BARO at 2.5, try another MAP sensor.
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Old 07-31-2008, 05:15 AM
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Thanks, will do.
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Old 07-31-2008, 05:16 AM
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btw, is it normal that the map sensor gets a pressure reading with the engine off? Or is that just current atmospheric pressure?
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Old 07-31-2008, 03:25 PM
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The MAP sensor will read atmospheric with the key on, engine off
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Old 07-31-2008, 07:24 PM
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did you replace the o2 sensor with OEM sensor?
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Old 08-01-2008, 09:28 AM
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Originally Posted by Togobox,Jul 31 2008, 10:24 PM
did you replace the o2 sensor with OEM sensor?
Yes, primary was replaced with brand new OEM o2 sensor. Secondary was replaced with generic BOSCH unit from autozone. From reading on the board, the generic seconday sensor works just fine.
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