Nissan Repair: 1990 Nissan Maxima, crankshaft pulley, nissan maxima


Question
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Followup To
Question -
My daughter had an accident (collision)with her 1990 Nissan Maxima V-6, which is absolutely perfect condition and very low miles (Grandpa's car).  Passener side front took the brunt of impact (front of engine). I had frame straightened, put on new front fenders, hood, etc, and -- after repairing A/C compressor, changing some pulleys. etc. -- got mechanical problem down to one thing which I cannot seem to fix.

The engine misses slightly and has a rattle/rasp when raised to maybe 1500 RPMS.  It's coming out of distributor (listen to with piece of pipe).  I replaced distributor with a used one.  Same thing.  And definitely coming out of distributor (listened hard to timing belt housing, tappets, etc.)

Any ideas?  Anything you can tell me would be very much appreciated.

PAUL

PAUL


Answer -
Paul,

I would say it is the idler tensioner pulley for the timing belt. The bearings go out on these and make the sound you describe.  Also, check the water pump and see if that is catching.  It is not that difficult to take the cover off to see the items I describe.  If you did the distributor the timing components should be pretty straight forward.  Let me know how it goes.

You were correct!  The problem is in the timing belt and tensioner.  The belt had jumped and the tensioner is probably bad.  I've bought new parts.  However, I cannot seem to get the crankshaft pulley off -- cannot get bolt loose because I cannot hold pulley -- which is required to access tensioner & timing belt (I bought Chilton Repair Manual, too.)  I've tried everything I can think of but am afraid of damaging pulley.  Any ideas?  Sorry to trouble you again.

PAUL


Answer
Vice Grip sells a chain plyer that you can hold the pulley with or you can get a speciality pulley holder.  If you go with the Vice Grip route be sure to use a rag over the pulley to keep from scoring it.  Also, if you have air tools you can really get enough torque with an impact and that could do the trick.