A bedtime story - My wonderful Z

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
jslew
Posts: 5
Joined: Tue May 12, 2015 8:45 am
Car: 91 300zx NA

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A few years ago, bought my wife the only car she ever really liked - 91 Silver NA 300zx.
Got it home & started trying to make it reliable... Pulled the engine (for multiple reasons).
New steering rack, alternator, starter, power steering pump, hydraulic lines, rear seal, timing belt, water pump, oil pump, $500 valve job, FI connectors replaced, all gaskets (even exhaust) replaced, tires, coils... i dont even remember everything i did to it!

Got it all back together after 9 months, wife takes it out after 3 days of driving... something wedges between the timing belt and the crank pulley (all nuts & bolts were meticulously accounted for during the rebuild), shreds the belt, and takes out #1,3,& 5 exhaust valves!!
Recover for a few days, take it back apart. More new valves, another oil pump (cuz piece got broke off), new T belt & accessories, more valve work, more $$$.

Got it back together, wife drives it for about 20 hours & alternator goes out! Get supposedly good rebuilt one, 20 hrs later it goes out. Go to local alternator guy & we find out the one rebuild shop in mexico that does this limited series alt is pressing the ring like .006" too much onto the shaft, & all rebuilds have the same prob. So he fixes both of my alternators!!

Wife drives the car for 2 years & 16,000 wonderful miles. Happy times! Then one day... about 1 mile from home...

Car stops & starts smoking inside - smells like burnt electronics. Tow it home. Wouldnt crank. Started checking relay, fuses & all that good stuff. Got out the ECU & found one chip had completely burned up. Tore it down to the T belt to make sure it didnt jump a tooth - it didnt. Found the CAS was bad, and thought culprit was corroded CAS connector. The "event" also killed 3 fuel injectors. Replaced all that stuff, car runs ok, but when revved its unbalanced, so something still not firing - find #5 injector not clicking. Start chasing connections. Lucky me, i find a damn short in the harness between #5 & the ECU!!! Now i get to spend $600 on a harness and pull the engine again! I still wonder if the CAS connector caused the problem, or the short? Which came first?
Is there a moral? Yes - spend the $600 & change the stupid harness if you have your engine out!!

Half of me says sell the car before something else catastrophic hits, the other half says whats left to break (i'm sure plenty!)? Keep it and get some miles out of it. :argh


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centralcoaster33
Posts: 2634
Joined: Tue Apr 05, 2005 10:41 am
Car: 1997 Nissan 240SX #5
Location: Central Coast, CA

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I like your story. It has just the right amount of drama. All 300ZX's should be driven a minimum of 300,000 miles. Keep it up man! You want your wife to be happy right? :crazy:

everpresentnoob
Posts: 152
Joined: Sun Sep 11, 2016 7:29 am
Car: 1990 300zx Base. Manual and abused by previous owner....

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jslew wrote:
Fri Aug 18, 2017 8:49 am
Half of me says sell the car before something else catastrophic hits, the other half says whats left to break (i'm sure plenty!)? Keep it and get some miles out of it. :argh
This is where I am with My Z... Trying to solve a coule issues that keep it from running then I am selling it as quick as I can before the NEXT thing goes out. Love the car, I understand that it is a couple years old (Mines a 1990), but I cant do this, every time something goes out its seems to be a minimum of 500 bucks to solve.

fastVG30DETT
Posts: 26
Joined: Tue Aug 15, 2017 4:20 am
Car: Z32

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This bedtime story gave me nightmares.

jslew
Posts: 5
Joined: Tue May 12, 2015 8:45 am
Car: 91 300zx NA

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centralcoaster33 wrote:
Fri Aug 18, 2017 1:33 pm
I like your story. It has just the right amount of drama. All 300ZX's should be driven a minimum of 300,000 miles. Keep it up man! You want your wife to be happy right? :crazy:
Try 135K.


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