1992 dodge dakota 5.2

 

I'd highly recommend the factory service manual for your truck.

But in the meantime, some specifics change (like fuel pressure) between your 92 and the 95, but that manual will help you today.

I'll get back to checking the plenum, NOIDing all eight injectors, and making sure that the fuel pressure is within spec (which for 1992, is 39PSI ±2PSI.) See the attached PDF for instructions from the FSM on how to do the test.

RwP

 

Thanks for the info, I checked my fuel pressure and had 37 psi while idling. My next step is to check the plenum. I unplugged the O2 sensor and it didn't affect the performance at all. And it was a job just to unhook that sucker too. I did notice the gel stuff on the top of that crank sensor looked like it was all bubbled up, doubt if that's normal. I got a new one, but the plug connector is backwards. It doesn't line up with mine

 

O2 won't affect anything until it's warm, and even then, there's tables that the ECU will use in case it's dead.

Did you get the new one from a Mopar dealer, or a generic "Hope this works long enough for you to get out of the parking lot!" aftermarket?

RwP

 

I didn't go to the dealership, I ordered it off rock auto, but it won't even plug up to my harness. B

 

Try the dealership. Not always do the aftermarket even fit.

RockAuto just uses whoever's cross listing, so that's not RA's fault, but doesn't help any.

RwP

 

Also, if you shifted the fuel sync with the new cam sensor, that may get it to running like tee total crap.

RwP

 

I've gotta sync the fuel too???, I think ill start looking for and intake and carb. I'm used to working on the old LA motors. There's a lot more on the magnums

 

The distributor has nothing to do with ignition timing on a Magnum. The cam sensor is used to tell the ECU if it's Cylinder 1 compression or exhaust at TDC; i.e., it's used to synchronize the injector firing to the engine. Hence "fuel sync".

Pull down that manual, and Google for it; there's ways to set it without a scanner, but it's actually easier with something like a DRB (which you won't want to buy, even used!) or even a SnapOn MT2500 with the proper carts in it.

RwP

 

Ok, That answers a lot since 92 was the first year for the 5.2 magnum. You need the set the fuel sync! First you need to find TDC #1 cylinder(ON THE COMPRESSION STROKE) make sure it is on TDC by checking the piston the mark on the balencer may be off. Then position the distributor like this...