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1987 Ford F-150 Custom 4.9L Excessive Emissions, Poor Idle Quality
There is no vacuum signal to egr valve. Vacuum to the control valve is okay. There is voltage to the control valve but the computer doesn't seem to be providing a ground signal on the other wire so the vacuum will go to the egr valve. The egr valve and pos...
FIX posted 2/15/2000
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| VIN | 1FTEF14YXH |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | CA Emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality |
| Occurs | Always, Idle |
Trouble Codes
| 84 | EGR vacuum regulator circuit problem |
Message Closed w/FIX
Vehicle Data
1987 Ford F-150 Custom
| VIN | 1FTEF14YXH |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | CA Emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality |
| Occurs | Always, Idle |
Trouble Codes
| 84 | EGR vacuum regulator circuit problem |
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