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Cavalier Problem Diagnosis Got a problem you can't fix? We can help.
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Old 03-17-2017, 12:35 AM   #1
Muttttly
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2002 Cavalier 2.2 Sfi Idle problems/Missfire 105000 KMS on car

Hello everybody been fighting this problem for months now,easier to explain what I haven't done ,only gets a code when idling for a while in closed loop,sometimes ,po 300 most of time it jumps differrent cylinders rough idle, excellerates​ without issues,Starts great,I have replaced and checked vaccum lines etc Ok what I haven't done.
Have not checked fuel pressure,crank,can,knock, sensor hasn't been changed,rear ,02 sensor not replaced and ecu not changed yet.Everything else done literally..thanks
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Old 03-17-2017, 09:29 PM   #2
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Re: 2002 Cavalier 2.2 Sfi Idle problems/Missfire 105000 KMS on car

You named it - Fuel pressure. Test that with KOEO and while running.
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Old 03-27-2017, 09:49 PM   #3
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Re: 2002 Cavalier 2.2 Sfi Idle problems/Missfire 105000 KMS on car

Internal leak of the intake manifold.
In case someone reads this.
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Old 03-29-2017, 06:41 AM   #4
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Re: 2002 Cavalier 2.2 Sfi Idle problems/Missfire 105000 KMS on car

Internal leak? Care to elaborate? I thought the intake was still aluminum in 2002.
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Old 03-29-2017, 06:02 PM   #5
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Re: 2002 Cavalier 2.2 Sfi Idle problems/Missfire 105000 KMS on car

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Internal leak? Care to elaborate? I thought the intake was still aluminum in 2002.
I have the 2.2 Sfi ....plastic intake manifold
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Old 03-29-2017, 06:51 PM   #6
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Re: 2002 Cavalier 2.2 Sfi Idle problems/Missfire 105000 KMS on car

I have a '96 2.2 SFI, and it was still aluminum then. I wasn't sure when they switched.
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Old 04-11-2017, 10:10 PM   #7
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Re: 2002 Cavalier 2.2 Sfi Idle problems/Missfire 105000 KMS on car

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Originally Posted by Blue Bowtie View Post
I have a '96 2.2 SFI, and it was still aluminum then. I wasn't sure when they switched.
You must have a two piece manifold,As for mine yes the plastic one and it's warped causing a internal leak.
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