Looking for some advice about my poor 94 Q45

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ideffects
Posts: 11
Joined: Sat Aug 07, 2010 1:36 am
Car: 2014 Infiniti QX80
2007 Infiniti M35X

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Hey Guys,

I used to be an active member on this form many years ago (wish I could remember my old username). I've alway turned to the advice of members here pertaining to my 94 Q45.

So here's the deal. I have Q that I still love with a dead engine due to a severe overheat (heater hose broke) that had thousands of dollars of new parts installed before the engine went. The car has been sitting and waiting for me to have the time and resources to replace the engine and get it back on the road. Well, I see that day may not come now that I have a wife, a baby boy and all the other distractions in everyday life.

So my question is what do you think would be the best thing to do with it. Is there a market for Q45's that have a dead engine? Should I part it out? What do you think it would be worth as-is? The interior and exterior is in great shape except for spider cracks on the bumbers.

Thank you for any suggestions!


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Q45man1
Posts: 287
Joined: Sat Apr 22, 2006 8:02 am
Car: 2002 Q45, 1994 Q45

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Part it out as we have members always looking for parts.
Good luck.

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Infinitiguy19
Posts: 7787
Joined: Sat Dec 22, 2007 4:58 pm
Car: 1993 Infiniti Q45 188580 Miles
1994 Infiniti Q45a 240000 Miles

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Sell it to someone who will part it out because I would imagine it would be hard for you to part out your own car which you spent so much time and money on.

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Lokim
Posts: 681
Joined: Mon May 10, 2010 12:47 am
Car: 1994 Infiniti Q45 acquired 4/25/10 w/192K
Now at 222K and going strong!
Location: Seattle, WA
Contact:

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Where are you located?

ideffects
Posts: 11
Joined: Sat Aug 07, 2010 1:36 am
Car: 2014 Infiniti QX80
2007 Infiniti M35X

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Hey guys, Thanks for the replies.

I'm located in Sandy, Utah (about 15 miles of Salt Lake City). For the skiers out there, about 5 miles away from Alta ski resort. I called around and the junk yards want it for nothing. I would feel better parting it out and helping others keep their cars on the road. I'm going to take some pics and start a new post. Keep an eye out for it or pm me for first dibs!

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goody90q45
Posts: 3679
Joined: Wed Aug 17, 2005 2:07 pm
Car: 1992 Infiniti Q45 (sold)
Location: Orangevale, CA

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One of our members, Dsagers, is in Sandy, UT and he parts out Q's. He may be willing to buy the entire car from you.

ideffects
Posts: 11
Joined: Sat Aug 07, 2010 1:36 am
Car: 2014 Infiniti QX80
2007 Infiniti M35X

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Thanks goody! I'll send him a PM.

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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I had the most severe overheat on Monday when a filler neck cap sprung a leak and pumped the coolant out [9 quarts required and I was stuck on interstate I had to drive 17 miles [in 100F] to next exit [a serious no no but I mentally prepared for $4,000 to swap engine].

A higher being was on my side since so far ok but I changed oil and ATF............................thanks Mobil 1 0w40.

All the rubber [newly changed] hoses are baked and worthless ordering every one that carries coolant for a Sat replacement.

A $5 cap cost me thousands and 3 years off my life during the incident.

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Infinitiguy19
Posts: 7787
Joined: Sat Dec 22, 2007 4:58 pm
Car: 1993 Infiniti Q45 188580 Miles
1994 Infiniti Q45a 240000 Miles

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Q45tech wrote:I had the most severe overheat on Monday when a filler neck cap sprung a leak and pumped the coolant out [9 quarts required and I was stuck on interstate I had to drive 17 miles [in 100F] to next exit [a serious no no but I mentally prepared for $4,000 to swap engine].

A higher being was on my side since so far ok but I changed oil and ATF............................thanks Mobil 1 0w40.

All the rubber [newly changed] hoses are baked and worthless ordering every one that carries coolant for a Sat replacement.

A $5 cap cost me thousands and 3 years off my life during the incident.
Everthing bad happens on a Tuesday at least to me. Today I was reading on of your posts and it was one of the scariest things I have read in a long time:
There really is no way for ecu to know when coolant is above 235F or so since the sensor won't read STEAM!

Once the coolant gets to 194.9 F, the ecu starts removing advance 1 degree per 5F............215F is it, as far as protection is concerned. The knock sensors are rated to operate to 302F and begin to melt shortly there after.

Aluminum alloy begins to change its physical properties at 380-400F........by 500F it is significantly and permanently changed forever.

When the expansion friction increases so much that the ecu cannot maintain idle the engine shuts off, locks up, and freezes.

Then the problem gets worse when the oil if it hasn't already turned to carbon stops circulating and there is no more cooling air flow..........5-10 minutes after shut down with hood closed is probably the worst temperature.

We have seen Q drive in with 550F head temperatures all you can do is hope and use a light spray of the hose to slowly drop the temperature, use a glove to open the rad and try to add water CAREFULLY..............usually the rad is cracked and the hoses melted, water pump bearings shot, that's $1500 alone.

Then comes the real expense.

We had a customer refuse to change a leaking water pump got 15 miles and pumped out all the coolant drove back 15 miles when he noticed the overheat........by then the engine was trash!

Not uncommon when people don't understand all aluminum engines.
92q-overheated-t62306.html

I can't believe this happened to you but don't give up hope Dennis. I also hope the 3 years off your life was a joke.

Dennis does have a sense of humor for all the new people:
Q45tech wrote:Hope after all your work your 95 performs as well as a good low mile stock 90 Q.........just kidding.
headers-o2-sensors-jwt-ecu-air-fuel-rat ... 66747.html

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lino
Posts: 3533
Joined: Mon Aug 15, 2005 7:48 am
Car: 1991 Q45a Fed-Spec, IQP/White, Texasoil 9 Accumulator Recharge, '93 TCU 1st Gear Start, JWFSB, B&M 70268 Transmission Cooler, BBS Forged Wheels, DRLs, Silverstars, Tint, Very Well Serviced.
Contact:

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Q45tech wrote:I had the most severe overheat on Monday when a filler neck cap sprung a leak and pumped the coolant out [9 quarts required and I was stuck on interstate I had to drive 17 miles [in 100F] to next exit [a serious no no but I mentally prepared for $4,000 to swap engine].

A higher being was on my side since so far ok but I changed oil and ATF............................thanks Mobil 1 0w40.

All the rubber [newly changed] hoses are baked and worthless ordering every one that carries coolant for a Sat replacement.

A $5 cap cost me thousands and 3 years off my life during the incident.

I'm so sorry to hear that Dennis :frown:. I was just thinking to myself that you haven't been posting much that last couple of days.

When I first bought my car I went to the Infiniti dealer to buy some parts and the 2 caps were actually amongst the first things I bought. I'm so glad I did.

ideffects
Posts: 11
Joined: Sat Aug 07, 2010 1:36 am
Car: 2014 Infiniti QX80
2007 Infiniti M35X

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Wow that's rough Q45tech. I truly hope your overheat doesn't come back to haunt you... There have been many times I stared at my Q WISHING I would of spent a little more in preventive maintenance.


On a side note, i'm going to part out the car. I have a new post in the Parts For Sale Forum. Here is the link with a bunch of pics. post5746005.html

Thanks guys!


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