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Nissan Quest Heating / Cooling Problems

75 messages,  Last post on Dec 09, 2012 at 6:44 PM

You are in the Nissan Quest Forum.

What is this discussion about? Nissan Quest, Mercury Villager, Heating / Cooling, Auto Repair, Electrical, Van

Messages Page 8 of 8

#66 of 75 2007 Quest - Leftside vents (ONLY) blow warm/hot air. by navydude1986

Jul 08, 2011 (9:27 am)

2007 Nissan quest w/ 36K miles (has the dual climate control). When turning on the A/C in the front A/C blows cold on the right side but warm/hot air on left. When A/C is turned off and temperature is set to 60deg, cool air is felt on right side and HOT AIR is felt on left side. Rear unit operates normally.

#67 of 75 Re: 1999 Nissan Quest no heat [dkeo1963] by johnnathan

Apr 06, 2012 (9:56 pm)

Replying to: dkeo1963 (Jan 23, 2010 6:43 pm)
Two things, are you sure you put the thermostat in the right direction, the manuals show it with the thermometer pointing away from block. Then are you sure you put the blow open thermostat or a cheep blow closed thermostat. But if you bleed the system, yes bleed the system, yes with the bleeder mounted on top the air intake blower. You have enough antifreeze fluid in the system, you should be all right, yes. Oh, are you sure the heater core is not blocked, with rust and sediment?

#68 of 75 Re: 2007 Quest - Leftside vents (ONLY) blow warm/hot air. [navydude1986] by redshiftkid

Jul 27, 2012 (10:03 am)

Replying to: navydude1986 (Jul 08, 2011 9:27 am)
I am having the same problem. have you found out anything about how to fix it?

#69 of 75 What is the line? by drkhrse01

Aug 06, 2012 (6:27 pm)

I'm replacing the starter motor on my 2000 Villager 3.3 V6. I had to remove the air-filter and then could access the starter. Coming out of the bell-housing area, near the starter is what looks like a vacuum line. It comes out of the housing like 4 inches, then turns to a rubber line, then back to a metal line. The metal line has a "J" or hook shape in it. I don't believe there was anything on it, or at least I didn't take anything off it. Is this a vacuum line, maybe an overflow on the tranny? Anyone know?
 
Thanks,
Brent

#70 of 75 Engine shot by memphibian

Aug 06, 2012 (6:46 pm)

I interrupt this thread to say I lost the 94 Villager and I should make it known how.. These cars (93-95) came out of the factory with a birth defect in the crankshaft forging. They have a small knob at the front of the crankshaft which holds the all-important belts. That's what cracks off. Replacing the crank costs the same as replacing the engine, plus would you end up with another defective 25mm knob? Anyway, Nissan knows NOTHING about this problem. I had 180K on it so I don't feel too bad, except there was a lot of new stuff in it.
Moral: don't put much money into a Quest/Villager from those years.

#71 of 75 Re: What is the line? [drkhrse01] by rockmobile

Aug 06, 2012 (9:24 pm)

Replying to: drkhrse01 (Aug 06, 2012 6:27 pm)
Where is that "J" hook hanging from, I think I have seen it but right now can not remember.

#72 of 75 Re: Engine shot [memphibian] by steve_ HOST

Aug 07, 2012 (7:24 am)

Replying to: memphibian (Aug 06, 2012 6:46 pm)
It's a known issue with the '93s and Nissan issued a TSB about it. They changed the crank size from 25mm to 27mm. Not sure when that change happened, so your '94 may still have the 25. Did you have your timing belt done? The mechanic may have over tightened it.
 
VQ FAQ
 
Steve, visiting host (and one-time Memphibian, although we said Memphian)

#73 of 75 Engine shot by memphibian

Aug 07, 2012 (8:13 am)

Thanks Steve. After it happened I looked it up on the web and found pages of sorrowful commentary. When I called Nissan USA the lady (NOT a car guy) blanket-denied any problem. She should have mentioned a TSB. I wanted to know, what other parts would be available to go up to a 27mm crank. I have to believe the "timing belt too tight" story was a phony excuse. At 180 K of course timing belt had been changed a time or two.

#74 of 75 Re: Engine shot [memphibian] by steve_ HOST

Aug 07, 2012 (8:42 am)

Replying to: memphibian (Aug 07, 2012 8:13 am)
I'm at 177k on my '99 Quest and I'm on the original belt. These are non-interference engines so there shouldn't be any damage to the engine if it breaks.
 
There could be some body damage if it breaks in heavy traffic, strands you, and you get hit, but I don't have a commute and decided to defer that maintenance.
 
Never looked into it, but just assumed all you had to swap out was the crankshaft.

#75 of 75 Re: 1999 Nissan Quest no heat [johnnathan] by haugh

Dec 09, 2012 (6:44 pm)

Replying to: johnnathan (Apr 06, 2012 9:56 pm)
Seems that the heater cores in these vehicles (99-00 Nissan Quest/Mercury Villager) have a control valve located right on the coil. If this fails, you have to remove the whole ventilation plenum which includes the A/C coil. That's right, the A/C has to be discharged to remove the plenum in order to get to the heater core to replace this valve. Not sure of the cost of these valves but for a shop, this would be an expensive repair.
 
Heater Core Valve Replacement
 
However, I have also seen this inline valve:
 
Heater Valve
on the back fire wall that runs into the heater core.
 
When I felt the hoses, one was hot and the other was luke warm, indicating a lack of flow. It's one or the other and I have not figured out which as of yet.

Messages Page 8 of 8

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