car loses power when warmed up
03-22-2008, 04:56 PM
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car bogs..and loses power when warmed up
yea since ive done a mini me head swap on my on my 92 civic hatch.when it gets warmed up on the tempature guage it starts to bog when i take off and shift.but when it is cold on the tempature gauge it runs fine and i do not have any problems..do you guys have any solutions?
03-24-2008, 08:14 AM
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Re: car bogs..and loses power when warmed up (shizkabob3421)
First check to see if your losing any coolant if you are then chances are the head gasket is leaking causing coolant to get into the chamber and you losing some power. If not i would check the O2 sensor i have that problem before when the car warmed up it changes loops and reads from the O2 when was making it run really rich.
03-25-2008, 12:24 PM
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The first thing that came to mind after reading the thread title was the 02 sensor. During open-loop (warm up) the engine runs without the aide of the 02; however, when warm (other than at full throttle), the engine runs with the aide of the 02. If it is fouled, you may be running weird AFRs causing the car to have less power than normal.
03-25-2008, 01:34 PM
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how do you know the head gasket isnt leaking? what he said was right, the coolant builds pressure when warm, this would cause it to creep past and end up mixing in the chambers.
You might think the HG is fine, but you never really know unless you do a leakdown/compression test.
You might think the HG is fine, but you never really know unless you do a leakdown/compression test.
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03-25-2008, 01:41 PM
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Re: (Schister66)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 »</TD></TR><TR><TD CLASS="quote">The first thing that came to mind after reading the thread title was the 02 sensor. During open-loop (warm up) the engine runs without the aide of the 02; however, when warm (other than at full throttle), the engine runs with the aide of the 02. If it is fouled, you may be running weird AFRs causing the car to have less power than normal. </TD></TR></TABLE>
X2, if your O2 isnt giving correct readings, its likely running richer than usual which would bog the motor's performance, making it feel sluggish.
X2, if your O2 isnt giving correct readings, its likely running richer than usual which would bog the motor's performance, making it feel sluggish.
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