weak heat
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Joined: Nov 2006
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weak heat
I have a 1996 b2500 with a 3.9l. The heat doesn't work very good, seems the higher I have the blower motor, the colder the air. If I set it to heat and have the blower low, you can feel warm air. Are these vans known for poor heating or is there something I should check. I have replaced the thermostat and radiator. After driving 5 miles the heat is still very "cool".
Any help would be great.
Thanks,
Derek
Any help would be great.
Thanks,
Derek
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Joined: Jul 2006
Posts: 14
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From:
RE: weak heat
Hi Derek010,
Based on the info you have provided I'd be checking the heater water flow control valve. It's vacuume controlled and is normally in the open position when the engine is off.
If your old coolant looked gluggy (that's a technical term
) I'd bet that the valve is stuck or it is being restricted in some way from opening fully. Be careful if you remove it for inspection as I found that they are quite brittle.
Hope this helps.
Based on the info you have provided I'd be checking the heater water flow control valve. It's vacuume controlled and is normally in the open position when the engine is off.
If your old coolant looked gluggy (that's a technical term
) I'd bet that the valve is stuck or it is being restricted in some way from opening fully. Be careful if you remove it for inspection as I found that they are quite brittle.Hope this helps.
Registered User
Joined: Jul 2006
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From:
RE: weak heat
Hi Steve,
It's actually a very simple concept and is still very experimental.
It's a container made from 4" PVC pipe and end fittings. It has a +ve stainless steel coach boat and a -ve stainless steel coach boat tapped and threaded from the inside of the pvc cap. I have two s.s. sink strainers inverted to each other, one isolated from the +ve, the other isolated from the -ve. This give a larger surface area for electricity to pass between + and -.
I have water mixed with a tiny amount of potassium hydroxide to fascilitate the electric curent.
This seperates hydrogen from oxygen molecules and the hydrogen is tapped with a fitting from the top with a hose to a hose fitting on the air filter lid.
All hydrogen does is lower emissions and extend the burn of gasoline.
I found that I get the best results with premium but that may be due another problem yet unsolved (excessive pinging and yes i have done all the t.s.b's on this issue)
[IMG]local://upfiles/38955/9C66A52051EA4DE295F254DD433C8842.jpg[/IMG]
[IMG]local://upfiles/38955/BF54552076874F5FBC3766FD8867BD3F.jpg[/IMG]
[IMG]local://upfiles/38955/24DA0E13215E445E8397BD58392B7343.jpg[/IMG]
[IMG]local://upfiles/38955/C02E87BCA4DC4570ACA6E6B89288D33A.jpg[/IMG]
It's actually a very simple concept and is still very experimental.
It's a container made from 4" PVC pipe and end fittings. It has a +ve stainless steel coach boat and a -ve stainless steel coach boat tapped and threaded from the inside of the pvc cap. I have two s.s. sink strainers inverted to each other, one isolated from the +ve, the other isolated from the -ve. This give a larger surface area for electricity to pass between + and -.
I have water mixed with a tiny amount of potassium hydroxide to fascilitate the electric curent.
This seperates hydrogen from oxygen molecules and the hydrogen is tapped with a fitting from the top with a hose to a hose fitting on the air filter lid.
All hydrogen does is lower emissions and extend the burn of gasoline.
I found that I get the best results with premium but that may be due another problem yet unsolved (excessive pinging and yes i have done all the t.s.b's on this issue)
[IMG]local://upfiles/38955/9C66A52051EA4DE295F254DD433C8842.jpg[/IMG]
[IMG]local://upfiles/38955/BF54552076874F5FBC3766FD8867BD3F.jpg[/IMG]
[IMG]local://upfiles/38955/24DA0E13215E445E8397BD58392B7343.jpg[/IMG]
[IMG]local://upfiles/38955/C02E87BCA4DC4570ACA6E6B89288D33A.jpg[/IMG]
Hall Of Fame
Joined: Jan 2004
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RE: weak heat
wow, sounds interesting. where'd you come up with this idea?
the pinging problem is most likely a leaky plenum gasket... take the TB off and use a mechanics mirror & flash light and look at all corners of the bottom of the intake. oil pooling is a sign of a leaky plenum gasket. a light film is normal.
the pinging problem is most likely a leaky plenum gasket... take the TB off and use a mechanics mirror & flash light and look at all corners of the bottom of the intake. oil pooling is a sign of a leaky plenum gasket. a light film is normal.
Registered User
Joined: Jul 2006
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From:
RE: weak heat
Hi Steve,
Q1. I bought a kit from a retired Canadian engineer, but it gave me problems so I rebuilt and modified it. I want to add a high powered 10-15 amp regulator which will make it a lot less maintanence. A more advanced idea is to inject compressed hydrogen, but I would need to re-program the chip to take full advantage.
by-the-way, I get a little more torque with this concept which is always nice pulling the boat.
Q2. I suspected that the plenum gasket was the cause, but sometimes it doesn't ping at all. Stop the Van...Start it again and it pings. Van uses oil on trips so I still wonder if the plenum g. is the culprit. Tried the mirror and flashlight but couldnt see a problem.
Q1. I bought a kit from a retired Canadian engineer, but it gave me problems so I rebuilt and modified it. I want to add a high powered 10-15 amp regulator which will make it a lot less maintanence. A more advanced idea is to inject compressed hydrogen, but I would need to re-program the chip to take full advantage.
by-the-way, I get a little more torque with this concept which is always nice pulling the boat.
Q2. I suspected that the plenum gasket was the cause, but sometimes it doesn't ping at all. Stop the Van...Start it again and it pings. Van uses oil on trips so I still wonder if the plenum g. is the culprit. Tried the mirror and flashlight but couldnt see a problem.
