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| Cavalier Problem Diagnosis Got a problem you can't fix? We can help. |
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#1
05-27-2008, 11:04 AM
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Fuel pressure
My '97 Cav 2.2 is in a shop having a stumbling problem checked. I received a call stating that the fuel pressure was down to 59 PSI. Apparently, it shoould be around 70 PSI. Although I am not familiar with injection systems, it seems to me that everything should still function properly at 59 PSI.
Could the 11 PSI drop in pressure cause a stumble from idle? The car runs great at cruise speeds and part throttle. Are there any factory specs on fuel pressure range? Thanks, 
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#2
05-27-2008, 09:11 PM
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Re: Fuel pressure
That seem very high.....per the manual. Key on, engine not running is 41 -47 psi
You may have a defective pressure regulator or a pinched or clogged fuel return line. JzJzz ...and the man from down under....Cheer mate !!!
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