Carburetor - Rochester Quadrajet
Series IV - V
Technical / Technique/Technisches
| 1982 Phaeton Spec Sheet |
Carburetor - Rochester Quadrajet Series IV - V |
Consumer Information - Series IV |
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| Wiring Schema - Series IV | Warranty Sheet - Series IV |
 
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| Electronic Control Modules [ECM] Problem (from Bob Nisbet, Alabama) |
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1982 Phaeton w/305 Engine and Quadra-Jet Carburetor I had a problem with a rough running engine and rebuilding the carburetor didn't help. Follow-up testing indicated that the ECM was sending only 3 volts to the throttle position sensor on the carburetor. It should have been 5 volts. The ECM repair facility [FullLogic.com] recommended that I temporarily apply an external 5 volt supply to see if the engine smoothed out. If this solves the roughness problem, either the ECM module is bad or there is a short in the wiring. I determined that my module was bad. [It is located in the left wall on the driver's side behind the carpeted side panel.] FullLogic said that a good solution was to install a permanent external 5 volt regulator [from Radio Shack] instead of rebuilding the unit. Note: ECMs are used on all 1982 and later Excaliburs.
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