
1989 Volvo 740 2.3L Excessive Emissions
Subsequent testing found the throtle switch never closing fully(always had a resistance value - approx 4.5k ohms). we replaced the tps and idle CO is now down to 0.04%. The problem is at cruise, CO creeps up within 10-20 seconds to over 4%. The O2S is still sw...
FIX posted 4/11/2008
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Message Closed w/FIX
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VIN | YV1FA8757K |
Engine | 2.3 L / 4 cyl / GAS |
Trans | 5-speed Standard |
Delivery | FI |
Symptoms | Excessive Emissions |
Occurs | Hot |
Message Closed w/FIX
Vehicle Data
1989 Volvo 740
VIN | YV1FA8757K |
Engine | 2.3 L / 4 cyl / GAS |
Trans | 5-speed Standard |
Delivery | FI |
Symptoms | Excessive Emissions |
Occurs | Hot |