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  #46  
Old 01-04-2012, 07:27 PM
FireRanger FireRanger is offline
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Default Re: NO HEAT Troubleshooting Guide

Did I forget to mention that in using that troubleshooting chart, you agreed to pay FireRanger a cut equal to that of 50% your net savings? I will PM you my PayPal address.
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  #47  
Old 02-01-2012, 07:35 AM
GaHillBilly GaHillBilly is offline
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Default Re: NO HEAT Troubleshooting Guide

Just thought I'd share my experiences on this topic.

I've completed some repairs on my 94 B3000 that had been parked with a water pump that had turned into a sieve. Ended up replacing PS pump and fan (bad clutch) as well. Now, I'm left with cleaning up a list of other minor repairs.

One of those was a intermittent or non-working heater. The cause was scale from hard water mixed with the antifreeze, over the 200,000 mile life of the truck.

But, I've about got it fixed.

I had installed flush connections on both heater hoses, and could blow out some scale, but then it would plug again. Here's what's solved the problem:

1. Used Prestone flush to remove any oil / non-calcium scale. Dumped fluid.
2. Refilled with a 25:75 mix of new antifreeze and DISTILLED water. Distilled water will . . . slowly . . . dissolve calcium scale. Mostly it seems to be making it break loose.
3. Open the flush valve every AM, drain till fluid is clear-ish (usually, about a pint.)
4. Swap the hoses on the heater every time it plugs.

After a little over a week of this, the heater is going 2+ days between swaps before it plugs. 2 days compares well to 10 minutes, which is what I was getting initially. And, the scale coming out each AM has dropped off to almost nothing.

I'll run it this way for another week or so, and then dump the fluid, and replace with fresh 25:75. I'll continue draining every so often, but I'll refill with 100% antifreeze, till I get up to 50:50.

Of course, if I'd realized that I should have been buying distilled water, when I bought my antifreeze, I'd never had had this problem! I assume all you mechanics already know that; I know enough water chemistry to have realized that, but just didn't think about it.

BTW, do NOT put pure distilled water in the engine without any antifreeze: it's pretty corrosive, like that.
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  #48  
Old 02-02-2012, 06:56 PM
felipee24 felipee24 is offline
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Default Re: NO HEAT Troubleshooting Guide

thanks a lot this really save me lot of $$$
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  #49  
Old 02-02-2012, 07:18 PM
FireRanger FireRanger is offline
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Default Re: NO HEAT Troubleshooting Guide

I doubt many if any mechanics regularly use distilled water. Totally unnecessary. 50/50 antifreeze and normal water is all you need. If your tap water is THAT bad, I'm not sure I would want to drink it let alone put it in my truck!
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How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
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  #50  
Old 02-10-2012, 03:50 AM
aufan aufan is offline
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Default Re: NO HEAT Troubleshooting Guide

1999 ranger 2.5l original condition was no heat after gauge showed warm and coolant topped off. Replaced heater core, no heat and temp gauge remains at cold. Increased rpms and temp gauge goes to middle and we have heat. Return to idle rpms and temp gauge returns to cold and no heat again. I have replace thermostat and water pump and heater core. Any ideas? I've never seen a engine run cold.
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  #51  
Old 02-10-2012, 11:59 AM
sheltonfilms sheltonfilms is offline
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Default Re: NO HEAT Troubleshooting Guide

Quote:
Originally Posted by FireRanger View Post
I doubt many if any mechanics regularly use distilled water. Totally unnecessary. 50/50 antifreeze and normal water is all you need. If your tap water is THAT bad, I'm not sure I would want to drink it let alone put it in my truck!
Normal water can be that bad. Its pretty much what happened to my water pump (yeah I used tap water for a long time). If you think about it water heaters (for home) usually bust a leak around the same time water pumps fail (when using tap water). Its because of the deposits in the water that cause the corrosion.
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  #52  
Old 02-10-2012, 12:44 PM
FireRanger FireRanger is offline
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Default Re: NO HEAT Troubleshooting Guide

Well, I guess this depends on what your tap water is like. I've been using tap water for 9 years in mine with the original pump and no clogs.
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How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
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  #53  
Old 04-02-2012, 12:46 PM
Lalogga Lalogga is offline
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Default Re: NO HEAT Troubleshooting Guide

Quote:
Originally Posted by aufan View Post
1999 ranger 2.5l original condition was no heat after gauge showed warm and coolant topped off. Replaced heater core, no heat and temp gauge remains at cold. Increased rpms and temp gauge goes to middle and we have heat. Return to idle rpms and temp gauge returns to cold and no heat again. I have replace thermostat and water pump and heater core. Any ideas? I've never seen a engine run cold.
I'm having this issue now...2.5L 1998 2wd. Started getting no heat a few days ago. Temp gauge drops down when idle, then bounces to normal while driving. Replaced stat and water pump. Now gauge barely moves off C....no heat. If I turn heat "off" for a minute or two, then turn it back on, I get some warm are for a few seconds, then cold. Radiator cap is cold. Upper radiator hose hot, lower hose cold. Any suggestions?
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  #54  
Old 04-02-2012, 01:36 PM
sheltonfilms sheltonfilms is offline
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Default Re: NO HEAT Troubleshooting Guide

Sounds like your low on coolant
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  #55  
Old 04-02-2012, 02:44 PM
Lalogga Lalogga is offline
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Default Re: NO HEAT Troubleshooting Guide

I fired her up again and let it run for 20 min. Could hear slight gurgling and temp gauge started moving at idle to normal range. Turned heat on...temp needle in middle, then slowly started going down. Good heat. I let it run for another 10 min. Check coolant in morning...I hope your right. darn bubbles.
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  #56  
Old 04-15-2012, 06:00 PM
pushingpsi pushingpsi is offline
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Default Re: NO HEAT Troubleshooting Guide

I just inherited a 1996 4cyl ranger, the temp gauge always read C so I added some coolant and now it moves a little. I'm going to replace the thermostat tomorrow and see if it will get the temp up. My real question is when I'm driving and I give the car more throttle (a little more to pass a car) and the A/C is on it will switch from blowing out the front vents to blowing out the defroster. So I was looking around the hood to see if any vacuum lines were messed up and sure enough the line going to the hot water valve was rotted and broken in the middle. Would this broken line cause this kind of reaction? What happens when no vacuum goes to the hot water valve?

Thanks so much for reading this and helping me out!
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  #57  
Old 04-15-2012, 06:37 PM
FireRanger FireRanger is offline
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Default Re: NO HEAT Troubleshooting Guide

It would only effect it in OFF and MAX AC. That line only has vacuum in those settings. But the problem you describe is indicative of a vacuum leak.
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How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
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  #58  
Old 04-15-2012, 07:36 PM
pushingpsi pushingpsi is offline
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Default Re: NO HEAT Troubleshooting Guide

Thanks so much for the quick reply, any suggestions on looking for a leak?
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  #59  
Old 08-26-2012, 12:59 PM
Cdiz Cdiz is offline
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Default Re: NO HEAT Troubleshooting Guide

Anyone have any idea where i can buy a Manual blend door actuator? ive done quite a bit of searching on the internet and seem to have no luck.

i need one with the cables attached and the the part that connects to the back of the hot/cold control panel.

was working on it and decided to snap a cable. so now i have to manually pull on the cables to get it to switch from either hot or cold...

any direction would be great help! thanks!
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  #60  
Old 08-28-2012, 04:19 AM
FireRanger FireRanger is offline
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Default

Quote:
Originally Posted by Cdiz
Anyone have any idea where i can buy a Manual blend door actuator? ive done quite a bit of searching on the internet and seem to have no luck.

i need one with the cables attached and the the part that connects to the back of the hot/cold control panel.

was working on it and decided to snap a cable. so now i have to manually pull on the cables to get it to switch from either hot or cold...

any direction would be great help! thanks!
A junk yard is probably the easiest and cheapest.

< Sent using the FRF Android app. So you can hate. Me when I'm mobile too >
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(Formerly)
FireRanger
2003 Edge 4.0 4wd

How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
Reply With Quote
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