Loss of power, downshift alot

nissantech · **Posted:** Tue Apr 10, 2012 2:18 pm

i have seen these intake manifolds leak coolant into the airstream, causing a lean reading on the oxygen sensors, causing the ecm to richen up the mixture. worth a look around cylinder 2

RomeoEJ · **Posted:** Tue Apr 10, 2012 5:42 pm

ok thanks for the info.

RomeoEJ · **Posted:** Thu Apr 12, 2012 11:26 am

Ok so i brought it to Nissan yesterday and as of now i think the problem is generally figured out for the loss of power...

The timing belt i guess skipped 2 to 3 teeth! :shock:

Im really happy that my engine didn't blow up! So when taking it apart today the pulley didn't come loose and was damaged and broke. Now they need a new one of those and that wont be in until tomorrow. So ill hopefully have all fixed up by tomorrow afternoon...

This may help the shifting problem too if there is a setting the computer is looking at before shifting and it is off. We wont know until it is back on the road but im really hoping this fixes all the issues.

XVTer · **Posted:** Thu Apr 12, 2012 12:03 pm

Good luck, bro

RomeoEJ · **Posted:** Fri Apr 13, 2012 6:55 pm

TRUCK IS FIXED!!!!!

Lots of power, clean shifts, engine sounds clean... Completely different! I wish i brought it to the dealer the first time.

List of things fixed...

Timing belt, water pump, seals, throttle position sensor readjustment, Sprocket and cranks, overall diagnostics to make sure no electrical issues (sensors)

The big issue was the sprocket/pulley being broken / stripped and the timing belt. I have all the parts that they took out and ill post a picture up later.

Overall i am really happy with Nissan's work and should have went there the first time. I actually said to begin with the timing and the other mechanic swore that was not the issue and said he checked it... i dont believe it now and i should have known something was not matching up.

TomsRedX · **Posted:** Sun Apr 15, 2012 8:09 am

Glad to hear its back to running good again!

nissantech · **Posted:** Tue Apr 24, 2012 2:46 pm

Shit, you are lucky indeed. I have yet to see one of these jump timing without bending valves. Glad to hear its fixed.

RomeoEJ · **Posted:** Tue Apr 24, 2012 4:37 pm

Picture of broken part and sprocket that was damaged. You cant see on the sprocket but the inner piece is all etched up where it would be attached to the shaft.

nissantech · **Posted:** Wed Apr 25, 2012 1:12 pm

That pic looks all too familiar. sometimes those crank pulleys get siezed on the crankshaft and they break comin off

Loss of power, downshift alot

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