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1993 Ford Aerostar Eddie Bauer 4.0L Excessive Emissions, Poor Idle Quality
with the information that I have gathered, it seems that the vehicle has a vacuum leak. Is there anything I should keep in mind because the heads look like they have been replace. FIX posted 5/2/2012 10 Replies Received (View Replies)10 Replies Received (Hide Replies)
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Message Closed w/FIX
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10 Replies Received
10 Replies Received
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Vehicle Data| VIN | 1FMDA41X1P |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | Fuel Injection / SFI |
| Emissions | OBD1, CA regulations |
| Symptoms | Excessive Emissions, Poor Idle Quality |
| Occurs | Always |
Trouble Codes
| 538 | cylinder balance test failed |
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