yes it could have two cat convertors. Never heard of an exaust regulator, though AFAIK some nominal regulation is done by the cat convertor, and muffler. Typically called 'back-pressure'. Thoretically, if there were a regulator on your exaust and it was removed, I suspect it would cause erroneous data on some engine sensors resulting in poor performance, probably gas milage, or power loss.
The Villager has two converters. The whole front converter/pipe assembly sells for around $300 or so, (NON-California), the rear converter for around $150, also NON-California. Generic converters can be installed as well by welding them into the existing pipes, this should cost no more than $150 each. California models require different converters certified for that state, and may also have additional converters attached to the exhaust manifolds. These can be VERY expensive, up to $1000 each.
if your car has duel exhaust, they should be located a foot or two away from the headers, since the exhaust heat makes them work. They have to be cut off by a mechanic, and new ones welded back on as well. They should be closer to the engine then the muffler, around the transmission in an impala. hope this helps
Yes , I'm not a mechanic / technician but i believe the voltage regulator is on the back of the alternator I am a mechanic / technician at ford and first answer is kinda correct... It's internal to the alternator. If suspecting a regulator issue replace the entire unit as a whole. No other components to mess with. Good luck.
There are 4 total oxygen sensors on a ford explorer. Two of them being before the catalytic (Pre-cat, closest to the front of the vehicle), and the other 2, after the catalytic (post-cat). You have to first figure out which bank the bad reading is coming from, then you have to determine if its post-cat, or pre-cat, most autoparts store will be able to tell you if your "CHECK ENGINE" light is on. ?ake sure when purchasing an oxygen sensor for your explorer, that it is HEATED, otherwise nothing will match up underneath. There are 2 sensors between the converters and the manifold. Also, between the catalytic and the muffler. Hope I could help!
Found the answer: The voltage regulator on a 98 Dodge RAM 1500 is NOT in the alternator. The alternator specifically states that the voltage is "Externally Regulated". In this vehicle the voltage regulator is built into the computer of the vehicle. To repair a bad voltage regulator in the computer you can either replace the computer or bypass the computer using about $50 in parts (ask your mechanic). Hope this helps.
P0420, P0430 Catalyst efficiency failure The Oxygen sensors that are after the Catalytic converter monitor the efficiency of the catalytic converter. Several codes can be for this. It is impossible to say what the code is. Try going to a auto parts store and having the code read and see what they say. Good luck. Brad. -I just had my O2 sensor replaced, the light came on again. I got the catalytic converters replaced the next day. The light just came on this morning after driving 200 miles without it being on. What else could it be, I don't know. Good luck though.
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