Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Hi, I'd start with this test. Take the pcv valve out of the valve cover, pull the breather hose off of the air cleaner( the hose from the other valve cover), start the engine, block the hole the pcv valve came out of and the end of the breather hose for 5-10 seconds. Tell me if it's building vacuum or pressure in the crank case.
Ok, is the check engine light on and have you checked the fuel pressure?
On a 97 5.2, there should be a Schrader on the fuel rail. There are adapters that go inline with the fuel rail with a Schrader if there isn't. Maybe try renting an adapter from a pep boys or Google 5/16" fuel pressure adapter.It could also be an IAC issue. If you can get a scanner tool and run a set RPM test, you'd select set RPM to 2000 and it should hit 2000 RPM within 100 RPM.
I don't have a diagram right now, I can check tomorrow but I think it's on one of the corners of the fuel rail on a 97. Not in the middle of the rail like the newer 5.2's. Not that this really matters but if it's a 2500, are you sure it's a 5.2 and not a 5.9?
Ok, that is odd for a 2500. Did you look over the fuel rail for the Schrader?
It does show a procedure with a test port and without a test port so I guess its possible your rail doesn't have one and you'd need to get an adapter to test it. But here's the picture in the procedure with a test port. It's in the middle of the rail, I'm sure you'd have seen it if you had it.
You need to get an adapter like this to hook a gauge up:
Do you think you'll be able to get an adapter? You could also make one if you get 3/8" male and female fittings, some 3/8" fuel hose and a Schrader tee.