1995 4.0 More problems

[drdfblackm]

1995 Explorer 4.0 EB. 67K miles. So I replaced the camshaft postion sensor. The original was bad, tested. I replaced as the manual states. New plugs, wires, serp belt, bunch of new sensors, change oil and filter. Got the engine back together. Started. Rough starting. No power and rough idle even dying. However throws code 337 and the lines on the EGR sensor pop off. I'm assuming that that cat is clogged since it is the surface of the sun hot near the cats. The bolts are for sure rusted. I guess the question is does it seem like clogged cats is the only problem from what my symptoms are? I know everything is plugged in, I had the engine at at the proper timing mark after TDC per the manual, I confirmed the camshaft position sensor worked using the voltmeter. The only thing I am questioning is the plug wires and order on the coil pack which I cannot find a good diagram. If I unhook the exhaust at the manifolds (assuming that I can actually get the bolts off) would it tell me the cats are clogged and should it run better? Just trying to determine if I am going to put any more time and effort into this thing.

Thank you

 

[C420sailor]

Afterburn (fuel burning in the exhaust) can cause cat overheat and damage. I’d imagine the extra pressure can also cause those hoses to blow off.

I’d really take a hard look at that cam sensor. The codes rarely lie, and that can be causing allllll your problems.

 

[wollimann]

However throws code 337

I am not firm with the OHV but if i search for the code 337 in this forum many posts point to EGR Valve and DPFE sensor. The DPFE sensor did not last forever and rubber hoses crack, the EGR valve could stuck. I would take a look to that.

The only thing I am questioning is the plug wires and order on the coil pack which I cannot find a good diagram.

it seem like clogged cats is the only problem

I think there could be some other problems like fuel pressure/pump, crank sensor or cracked heads.
Whish you luck and patience to fix the problem.

 

[drdfblackm]

Sorry.....but can someone confirm that firing order listed above. Confused because it is in German and I thought the front cylinders were 1 and 6 not 1 and 4. If that is true....I have the plug wires all wrong and have zero idea how it's running.

 

[Mbrooks420]

Sorry.....but can someone confirm that firing order listed above. Confused because it is in German and I thought the front cylinders were 1 and 6 not 1 and 4. If that is true....I have the plug wires all wrong and have zero idea how it's running.

The diagram is correct. You’re firing out of order, which will cause all sorts of issue. You’ve essentially got 2 cylinders out of time which will beat holes in your pistons if you aren’t lucky.

 

[Mbrooks420]

Sorry.....but can someone confirm that firing order listed above. Confused because it is in German and I thought the front cylinders were 1 and 6 not 1 and 4. If that is true....I have the plug wires all wrong and have zero idea how it's running.

 

[drdfblackm]

OMG.....I was going off how it was previously.....yes someone else was monkeying with it.