Loc: San Tan Valley, AZ.
Troubleshooting/diagnosis/direction help. 95SR. (long)
02/24/12 04:53 PM
Well, I've gotten to the point where I am completely stumped with my truck. So before giving in and taking it to a shop, I'm posting up as a last ditch effort for some advice/direction on where to go with my truck. It's been an ongoing struggle since last July when I bought my 95SR. If you are interest in the whole saga, click here , and here. Warning, both threads are LONG.
To catch up, here is where I am at. My short block was trashed. #4 piston was about to come apart, and the crank was bad. One of the journals was .040 out. A core crank was obtained and reground, and the entire short block rebuilt by RPM performance in Utah. Here is a list of what I've put into the engine since then.
Re-manufactured heads from Clearwater.
New water pump
New oil pump
New OEM gasket kit
New head bolts and washers
New torque converter bolts
Basically new tensioner, pulleys and timing belt (They had only a few hours on them before I pulled the engine)
New crank sensor and blade
Spark plugs are virtually new, as they also only had a few minutes of run time on them prior to pulling the engine.
After re-assembly, my good friends in the AZ crew helped me drop the engine back in and get it all bolted up.
After some trial and error of the engine not running, I found that I had swapped the cams on the passenger side. After correcting the error, the truck will start and idle fairly smooth. I hear some lifter tick on the driver side. I attribute that to not having built up sufficient oil pressure to pump the lifters up. I also hear some knocking under the truck, but I can't pinpoint if it is an exhaust leak or worse.
Here's where I am stuck. If I put the engine in gear, turn on the AC, or turn the wheels (basically put any kind of load on the engine) it will idle very low and want to die. I've changed the ISC with a known good ISC from a running truck. No change.
Acceleration sitting in park is very slow. Meaning when stepping on the accelerator, the engine RPM is very slow to rise. Like it is struggling to rev.
I took the truck for a very short trip around the block. Same thing when in gear. The truck struggles to rev, and is knocking to the point of sounding like a diesel. Have to keep revving the engine to keep in from stalling at a stop, and it has NO power. I parked it after that to not cause any (further) damage.
This was a couple of weeks ago. I pretty much walked away in disgust and left it alone for a couple of weeks to give my mind a rest.
I've discussed at length with some of the AZ crew, with no definitive ideas. Timing is spot on, and I'm obviously getting fuel and spark, since it will idle, but little else.
So, short of taking this to a shop, or just setting it on fire, I figured some fresh ideas may help. I've got a lot of blood, sweat, and money into this thing, and I'd really like to finally to be able to drive my truck that I bought some 7 months ago. Thanks for reading my long winded cry for help. Thanks in advance to any ideas/assistance you guys can give.
1995 Montero SR
2" Body Lift
35x12.50x15 Cooper Discoverer STT