Now ****s getting really weird

 

So what should i try next?

 

I have no clue about yours since it sounds like youve thrown the book at it but this could be an electrical issue. Check all of your grounds and clean them up ( disconnect, wire brush). It made a world of difference on my jeep and a lot of the problems i see on this forum end up related to bad grounds. Do a search for all the ground connections to make sure you account for them all. I cant remember them all to list for you. There is a small ground wire i believe from the tps that gets overlooked. Replace rotten/worn straps. I replace all of my stuff with battery cable. Might not be the solution for you but it cant hurt to try if you are at a dead end...until someone smarter than me chimes in.

 

I'm going to suggest you remove the cat and see how it runs. If its partially plugged it can let the engine idle fine but will bog down and stall under load.

I've had two experiences with this- first was an old mustang. Drove it to the airport (about a 2hr trip), parked it for a week while I was in Cali, came back and picked my car up and found I could go faster than 55mph. The closer I got to home the slower it got. Next day I took an EGR valve off the manifold and it ran great- knocked out the guts of the cat and drove that car another 2 years without problems.

Second time was a 99 XJ that had been sitting for a few years. First time I started it and drove it around the driveway it stalled. Let it sit for a few minutes and it would start back up and drive a short distance and stall again. What I found was squirrels had packed the exhaust full of corn ( same as if the cat would be clogged). Cleaned out the corn and drove that Jeep for 3 more years without any problems.

So pull that cat off. If it runs fine hollow the cat out and put it back on.

 

Still no start this morning after cooling off overnight.

It doesn't seem to be restricted by the cat anymore tho. Just turns and turns. I'm thinking it's electrical. It will give me like one or two good sputters and just cranks and cranks.

Seems like it's getting fuel and spark. I've tried unplugging sensors like we had it last night. Still nothing.

 

Had a local mobile mechanic come take a look at it. Met him up at my local O'Reilly's and he was gracious enough to swing by and test my fuel pressure (I was using a borrowed kit), spark pulse, and spark for free. Said I was losing spark through my cap and rotor and may as well do wires while I was at it.

So I'm off back to O'Reilly's to buy said parts. Shouldn't be too bad with an employee discount. .. We will then see what happens.

 

New cap, rotor, and plug wires. Correct firing order.

AND!?

No start.

Back to the drawing board?

 

Is your engine light on if the o2 sensors are bad it should be throwing the bank 1 sensor 1 code or bank 1 sensor 2 code.... Just sayin'

 

Don't use straps they suck get like 4 Gage wire and replace your grounds not a bad idea!

 

If I were you I would do a complete tune up plugs wires distributor cap and rotor... That's just me though do you have a wire tester?

This is what I run on my xj:

http://m.summitracing.com/parts/acc-tst17

 

Plugs, Wires, Cap, Rotor, CKS, TPS, IACV, MAP, and Fuel Pump are all brand new.

 

Any odd wear on the either of the o2 sensor wires from rubbing on anything? Trace the wires around and check, I remember reading some odd things from the wire harnesses rubbing on whatever it may be and grounding out causing problems.

Check all your dash and underhood fuses while your at it.

If nothing shows up at least you ruled out a few things, and definatly disconnect the cat and try again if you already havnt (if you said you did so I missed it sorry lol)

 

Have you done this yet? :

 

Crap!! I missed that part!

 

If it was the o2 sensor his engine light would be on!!!!!!