Question about Cars & Trucks
It keeps bogging down and running rough I thought it might be an egr valve
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Have you checked base fuel pressure ? Is the check engine light staying on ?
Posted on Apr 24, 2013
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Posted on Jan 02, 2017
SOURCE: replaced egr valve. still
is there a steel tube that runs up to the valve cover? If so check to see that it isn't blocked. If it blocks up it will give you a code that the EGR isn't working and mess up the idle.
Posted on Jul 27, 2008
SOURCE: Had a bad egr valve
You have a plugged exhaust, replace the catylictic converter and find out what make it fail and plug, rich fuel mixture is most common cause of overheated burnt cat. The EGR is just a symtom of the plugged exhaust.
Posted on Aug 02, 2008
I hope this helps, I have had this problem 1 other time.
The EGR valve you bought was a negative and it calls for a positive. Or visa/ verse. If that is the case, it will not start. There are 2 different EGR's for 1994, CFI & TBI, both are the type of injection and are not interchangable on the EGR valves.
Posted on Jan 14, 2009
SOURCE: FAILED EGR VALVE
The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. This results in a cooler, more complete burn of the fuel which decreases you car's noxious emissions by prohibiting the formation of some harmful gases.
The EGR valve is vital to your car's emission controls.
When the EGR valve goes bad, it must be replaced - it cannot be repaired.
The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine. The exhaust your EGR valve recirculates also prevents the formation of Nitrogen related gases. These are referred to as NOX emissions, and are a common cause for failing emissions testing. Unfortunately, your EGR valve can get stuck, causing NOX gases to build up. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on accelertaion.
The only short term problem is a decrease in gas mileage - but it should really be replaced before sensors become sooted or your cat. convertor gets overworked prematurely.
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Posted on Apr 15, 2009
Sometimes a rough idle like that is a fuel filter. As you've already done the plugs and wires the fuel filter would be my next bet.
Posted on Mar 15, 2010
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