90-95 Q coils, harness, and plugs

[Q45tech]

After all the focusing on injector failures many forget that the coils and harness eventually fail.

Chasing a ramdom misfire that I though was an injector, but dozens of resistance reading and Consult power balance tests later.

Byron and I narrowed it down to #1 and #3 coil and the harness, replaced 4 spark plugs first to no avail. Zero oil in any spark plug well.

The power balance would alternately show first #1 then #3 as bad, or 2 - #1 in a row then a #3

Luckily I had an entire set of coils and both harnesses sitting in a box from 2003.

I said the other day that the coils were bullet proof well 19 years and 11 months anyway.

The point is don't rely on a single test but repeat and repeat until things show normal multiple times.

New V Exaltos for Xmas.

[Infinitiguy19]

Still of all the G50 Q45's made only a handful have had bad coils. But who can complain about parts failing after 19 years right.

[qship96]

At some point, you gotta consider the car worn out and just get a new one....I think by 300,000 miles, that time has come . Sure you can keep replacing major components, but why? Might as well define your cutoff point and start over with a more modern vehicle.

[Infinitiguy19]

Some people are passionate about some cars, That being the case with me and this Q. If it wasn't the case I would have had a 1968 Impala, Chevelle, GTO or a 1989 Pontac Firebird GTA. I know none of those cars are close to a Q but they can be made better, Like the Q can. Plus with newwer car they drive you instead of you driving the car, just look at all the new technology. But I am sure many were saying that when ABS came out so....

[maxnix]

I would have had a 1968 Impala, Chevelle, GTO or a 1989 Pontac Firebird GTA. I know none of those cars are close to a Q but they can be made better, Like the Q can.

I drove all of those cars when they were new.

Believe me, none can come close to a G50 no matter what you do to them. Cast iron rear live axles are so limiting, not to mention flexible flyer chassis.

[Q45tech]

I have the functional equivalent of $15,000 [retail] of new and used spare parts. Constant stream of $500 Q45 junkers to pick parts from. Ebay and junker yards, not to mention JDM junkyards to chose from. I have a group of Master Techs who work for $40 per hour weekends.

I am retired [62] and need the constant mind stretch of keeping the Q45 on the road.

I have a 1999 MB C43 AMG to compare to, and the Q45 is better in many respects, sure it's 0.5 sec slower and doesn't handle as well due to 500 pounds of extra weight but the transmission is more robust as the MB eats them every 100k at $5,000 each.

The 2010 GM 4.3 PU get horrible MPG is an acceleration and braking PIG and costs $500 per month plus expenses.

The Q is far and away the least expensive at $2500 per year.

Sure I have to spend a 10 hours per month.

[Q451990]

At some point, you gotta consider the car worn out and just get a new one....I think by 300,000 miles, that time has come . Sure you can keep replacing major components, but why? Might as well define your cutoff point and start over with a more modern vehicle.

Over a couple of coil packs? Gotta ask... has your Q done something to tick you off recently? Your recent posts are all geared toward Lexus > Infiniti and a general lack of love for the G50...

Heath

[qship96]

No, my Q is running great....total R&M for 2009 was just $2200{using all super premium parts/fluids/master Infiniti tech for service} for 21,000 miles of use! But at 241,000 miles, I am beginning to look for its eventual replacement,and all the quality slips I am reading about in new/newer Q & M has me questioning whether my next car will remain a Nissan/Infiniti product{which is all I have driven since 1979}. I will not perform a major component swap on my car at this age/ mileage like a transmission,injectors,differential,engine, etc- which is why I made the comment about sooner or later you have to consider the car worn out and replace with a newer one....

[Infinitiguy19]

An injector isn't really a major item....But if there were no 1990-2001 Q45's left (Yea I kinda hate 2002+ Q45's) then I would choose the Infiniti Essence.

[silkysmoothyjud]

No car payments, this forum and 20 bucks a month to ensure are definite pluses, but when my car outclasses, outperforms and outlives 95% of the cars on my job's parking lot, that is priceless. Going on five years of ownership; I get more compliments on this car than any other car I have ever owned. It's kinda sad that my car is almost old enough to drive and is better than most of the new ones out there. If (when) my transmission fails, it will be replaced....

[Q451990]

...sooner or later you have to consider the car worn out and replace with a newer one

I can't disagree - we all have our breaking point. In my case it's when replacement parts are no longer available or become outrageously expensive. Q45Tech has mentioned that the "glory days" of automotive engineering - at least from a reliability standpoint - ended in about 1997, as software got better at designing parts to just make it through the warranty. Guess that begs the question - is Nissan/Infiniti declining any more than any other company? Is our knowledge of the newer Infiniti designs scaring us just because we know how the sausage is being made? I guess the only way to make a really informed decision about a new car or new car brand is to absorb yourself in an active discussion forum about it and see if it's quirks are something you can live with.

Heath