I have a 1999 Dodge Ram 1500,4wheel drive,5.2 L engine. Should it have a EGR valve?

I have a Haynes repair manual that says that it has an EGR valve and shows where it should be,but mine does'nt have one.The vacuum schematic in the engine compartment does not show one or any hoses going to one.I removed the manifolds and replaced them with headers and there was not any places in them for an EGR tube.I have a 1999 Dodge Ram 1500,4wheel drive,5.2 L engine. Should it have a EGR valve?
It is possible that a previous owner removed the EGR valve. All gas and now diesel engines come with an EGR valve as a pollution control device. To disable and/or remove is a violation of US EPA (federal) law. Periodically they will carbon over and need serviced. They are in the intake air stream and redirect spent gas back into the the engine for cleaner combustion. It will open and close according to engine load and computer programing (if electrically controlled) or vac demands, depending on the age and set up of the vehicle. EGR may source spent gas from other sources than the exhaust manifold. Your manual should show that as well. My 2006 Jeep Liberty Diesel has an EGR system and a cat converter.
an egr valve takes exaust gass and sends it back into the engine to be reburnt if you dont have the tubes for one or the mounting spot and your check engine light in not on then you should be golden check the haynes manual its probably for the larger 5.9 magnum engineI have a 1999 Dodge Ram 1500,4wheel drive,5.2 L engine. Should it have a EGR valve?
yes there is an egr valve, it will be mounted on the exhaust and there will be a tube running to the intake manifold, and it will also have a vacuum line from the egr to the intake manifold.
The egr valve does not connect to the exhaust manifolds. There def. should be one on a truck that new.I have a 1999 Dodge Ram 1500,4wheel drive,5.2 L engine. Should it have a EGR valve?
An EGR valve works by letting exhaust gasses into intake manifold. The purpose is to raise the intake air temp. which cuts down on oxides of nitrogen (NOX). Not every vehicle has one, but most do. I am sure the 99 5.2 has one. I had a 95 Grand Cherokee with the same engine, and it had one. Starting in 96, all vehicles are required to meet OBD2 standards, which are much more strict with emissions. On my 95, the EGR was in the rear of the manifold and had a tube from connecting both exhaust manifolds to EGR valve. It is controlled via the computer which controls a solonoid hooked to a vacuum source.