We just changed the PCM. The durango was having stalling issues. Was told the PCM was bad.We just changed the PCM. The durango was having stalling issues. Was told the PCM was bad.
I know that p1491 is for a radiator fan relay, bit this durango has a clutch fan.I know that p1491 is for a radiator fan relay, bit this durango has a clutch fan.
engine could be overheating check fan clutch the fan clutch should have resistance when trying turn fan by hand when engine hot.have engine temperature checked if engine overheats engine will stall out also.engine could be overheating check fan clutch the fan clutch should have resistance when trying turn fan by hand when engine hot.have engine temperature checked if engine overheats engine will stall out also.
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As a Dodge code it refers to..
P1491 Secondary Switch Solenoid Circuit Malfunction.
"P1491 is for the cooling fan relay circuit. There is a seperate fan for the a/c condensor on your truck. When this code sets it is because the fuse is blown. Its fuse 39 in the box under the hood. The cause of this fuse blowing is a bad fan motor."
Code P1491 in Honda/Acura vehicles means insufficient EGR valve lift. Note - this is not the same as 0401 for EGR low flow when you have to clean EGR passage in the intake manifold. If code 1491 is not accompanied with 0401 - that could be faulty EGR valve itself. Try to reset the code, and if it will return soon - replace EGR valve. If, however you see both codes together - cleane the manifold passage before you replacing the valve.
P1491 Radiator fan relay control circuit
i remember someone else asking this question and another expert said it was behind the bumper ?? ,right looking in the dreaded haynes book and its right side ,no thats a 98 model a 99 model is left side next to vacumn tank ,earlier model its under behind the battery
P1491 is Radiator Fan Control Relay Circuit. MEANING: An open or shorted condition detected in the low speed radiator fan control circuit.
Some questions for you:
1. Is your Caravan overheating?
2. Is your Caravan water temperature spiking going past the midway point on the Temp Gauge before the radiator is engaged?
3. Is your Rad Fan coming-on and then turning off and back-on in a very short period of time (like under a minute?
If all of these are "No" then do not worry about it.
We just changed the PCM. The durango was having stalling issues. Was told the PCM was bad.
I know that p1491 is for a radiator fan relay, bit this durango has a clutch fan.
engine could be overheating check fan clutch the fan clutch should have resistance when trying turn fan by hand when engine hot.have engine temperature checked if engine overheats engine will stall out also.
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