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1989 Mercedes-Benz 420SEL 4.2L Hesitation, Stall, Poor Fuel Economy
We found the following solutions to this problem which I
thought fellow MB techs would be interested in. 1. The PCV
valve was totally clogged 2. Someone had closed off the
small idle air bypass pipe
FIX posted 9/30/1998
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| VIN | 1260321212 |
| Engine | 4.2 L / 8 cyl |
| Emissions | US Fed |
| Symptoms | Hesitation, Stall, Poor Fuel Economy |
| Occurs | Always |
Message Closed
Vehicle Data
1989 Mercedes-Benz 420SEL
| VIN | 1260321212 |
| Engine | 4.2 L / 8 cyl |
| Emissions | US Fed |
| Symptoms | Hesitation, Stall, Poor Fuel Economy |
| Occurs | Always |
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