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  #1  
Old 03-17-2017, 06:52 PM
Grubb44 Grubb44 is offline
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Default 1998 ford ranger 3.0 need some help!!

Ok drove the 98 ranger today. In town to run some errands and back. Did NOT overheat. However, when I started driving it would warm up, then while driving temp would drop. At a stop sign it would start to warm back up, start driving would drop, then come back up staying at a steady speed. Back and fourth like that. When I got home the truck was warm and blowing hot air out of the vents, popped the hood, and I could EASILY spin the cooling fan by hand.

Do you think the fan clutch is bad? I shouldnt be able to spin it by hand once the truck is warm, correct?

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I was told it had a cracked head when I got the truck. Ran a compression test and only 1 cylinder was at 90 and the rest was 100-120. So I'm not thinking a gasket or cracked head. The post above was what I sent over to a ford tech earlier and waiting on his response. Any ideas anyone??

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Also there is NO oil in the water or water in the oil.
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1998 Ford Ranger 3.0 V6 5speed Ext cab. 2 wheel drive
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  #2  
Old 03-17-2017, 07:19 PM
LargeR LargeR is offline
Arizona 2wd Ranger
 
Join Date: Nov 2012
Posts: 167
Default Re: 1998 ford ranger 3.0 need some help!!

Symptoms are consistent with a bad fan clutch. Does the fan spin at idle? I've seen them bad enough that you can stop them by hand. Also, you could have low coolant so check the coolant level in the radiator when cool.
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Rick Large
Mesa AZ
'99 Ex-Ranger 2wd XLT 5.0, Explorer V8 and auto transmission swap, floor shifter from Nissan Altima Parts, aluminum radiator & electric fan, OBX headers, 3" custom exhaust, explorer roof rack, 2006 mirrors, cut front 60/40 seat to buckets, 4 in lift spindles up front and shackles in back
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  #3  
Old 03-17-2017, 09:50 PM
Grubb44 Grubb44 is offline
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Before I left to go on my errand run/test drive I topped it off with coolant. When I got back I did notice it pushing coolant up out of the radiator cap.

Never tried to stop one of these fans with the truck on and running......... Got to close one time and it caught my finger and hurt like hell. Don't think I want to try and stop this one with it running.

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And the fan does indeed spin at idle. But wouldn't the fan always spin but only spin faster when the clutch engages?
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1997 Ford Ranger. 2.3ltr 5speed. Ext cab. 2 wheel drive
1998 Ford Ranger 3.0 V6 5speed Ext cab. 2 wheel drive
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  #4  
Old 03-18-2017, 07:54 AM
Fasttrackranger Fasttrackranger is offline
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Default Re: 1998 ford ranger 3.0 need some help!!

Sounds fan related to me but also some symptoms of a stuck thermostat.

Sent from my LGL62VL using Tapatalk
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  #5  
Old 03-18-2017, 08:16 AM
Grumpa Grumpa is offline
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Default Re: 1998 ford ranger 3.0 need some help!!

In my experience, If you have a blown head gasket, water in the oil doesn't always happen, it can blow at a water jacket close to the cylinder and pressurize the cooling system. This can force air into the system. This is will give you a constant bubbling in the reservoir when the engine is running and/or an overflow condition. Erratic temperature swings on the temp gauge can indicate air in system from this condition. Loss of coolant can be from it getting into a cylinder or from the overflow. Pull the #1 plug and see it's condition.
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1995 Ranger XLT 3.0L OBDII
Trans: A4LD (E) 2WD
Rear: 7.5 / 3.45 NL LHD
Tires:GY P235 75/R15 (orig 225 70/R14)
Long Bed, 20 Gal Tank
Up to 229,900 miles
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  #6  
Old 03-18-2017, 08:38 AM
Grubb44 Grubb44 is offline
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While I ran the compression test I went ahead and replaced all the plugs. All plugs looked the same. They weren't white nor were they charred or wet. Looked like good, well used plugs.

On my 63 ford falcon I use to have I blew a head gasket like what you are describing, but that was about 10 years ago and my memory isn't the greatest as to what it's symptoms were.
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1997 Ford Ranger. 2.3ltr 5speed. Ext cab. 2 wheel drive
1998 Ford Ranger 3.0 V6 5speed Ext cab. 2 wheel drive
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  #7  
Old 03-18-2017, 09:45 AM
Grumpa Grumpa is offline
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Default Re: 1998 ford ranger 3.0 need some help!!

Ruling out a head gasket then, Your other observations would dictate a fan clutch replacement. I would go ahead and do a complete system flush, change the thermostat, and radiator cap. Depending on the mileage, I would consider a new water pump as well especially if you don't know the vehicle history.
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1995 Ranger XLT 3.0L OBDII
Trans: A4LD (E) 2WD
Rear: 7.5 / 3.45 NL LHD
Tires:GY P235 75/R15 (orig 225 70/R14)
Long Bed, 20 Gal Tank
Up to 229,900 miles
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  #8  
Old 03-18-2017, 12:20 PM
Grubb44 Grubb44 is offline
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Current vehicle mileage is 206,900.
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1998 Ford Ranger 3.0 V6 5speed Ext cab. 2 wheel drive
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  #9  
Old 03-20-2017, 05:02 PM
Grubb44 Grubb44 is offline
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Well did the thermostat and cap yesterday and drove it a little bit. Didn't drive it today because it was 80 out and I rode the Harley. Will probably drive the ranger tomorrow and let y'all know what happens. Thank you.
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1997 Ford Ranger. 2.3ltr 5speed. Ext cab. 2 wheel drive
1998 Ford Ranger 3.0 V6 5speed Ext cab. 2 wheel drive
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  #10  
Old 03-22-2017, 01:08 PM
Grubb44 Grubb44 is offline
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Ok after a few days of driving it, maybe 100 miles after thermostat and radiator cap replacement, temp dropped a little bit when taking off from a light then came back up. Checked coolant and it was about a 1/4 of a gallon low.

Where should I start next? No leaks or cracked hoses anywhere. Ideas? Suggestions?
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1997 Ford Ranger. 2.3ltr 5speed. Ext cab. 2 wheel drive
1998 Ford Ranger 3.0 V6 5speed Ext cab. 2 wheel drive
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  #11  
Old 03-22-2017, 01:53 PM
DangerRanger37 DangerRanger37 is offline
Tuck it in.
 
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Default Re: 1998 ford ranger 3.0 need some help!!

Quote:
Originally Posted by Grubb44 View Post
Ok after a few days of driving it, maybe 100 miles after thermostat and radiator cap replacement, temp dropped a little bit when taking off from a light then came back up. Checked coolant and it was about a 1/4 of a gallon low.

Where should I start next? No leaks or cracked hoses anywhere. Ideas? Suggestions?
Did you pressure test the system? Sometimes they drip in odd places which you can't easily see. I'd rule that out before I started throwing money at it
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RCX leveling coils, Pro Comp AAL, 1" BL
31x10.5x15 General Grabber AT2
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  #12  
Old 03-22-2017, 03:59 PM
Grumpa Grumpa is offline
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Default Re: 1998 ford ranger 3.0 need some help!!

If you lost a quart after a 100 miles, and you definitely can't see any wet areas or leaks, the coolant has to be exiting somewhere... like through the exhaust then. Have you tried one of them test kits you hold on the radiator opening that detects exhaust in the coolant?
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1995 Ranger XLT 3.0L OBDII
Trans: A4LD (E) 2WD
Rear: 7.5 / 3.45 NL LHD
Tires:GY P235 75/R15 (orig 225 70/R14)
Long Bed, 20 Gal Tank
Up to 229,900 miles
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  #13  
Old 03-22-2017, 04:38 PM
Grubb44 Grubb44 is offline
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Quote:
Originally Posted by Grumpa View Post
If you lost a quart after a 100 miles, and you definitely can't see any wet areas or leaks, the coolant has to be exiting somewhere... like through the exhaust then. Have you tried one of them test kits you hold on the radiator opening that detects exhaust in the coolant?
Yes. Did that just a little while ago. And the blue fluid turned a yellow color.
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1997 Ford Ranger. 2.3ltr 5speed. Ext cab. 2 wheel drive
1998 Ford Ranger 3.0 V6 5speed Ext cab. 2 wheel drive
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  #14  
Old 03-22-2017, 05:07 PM
DangerRanger37 DangerRanger37 is offline
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Default Re: 1998 ford ranger 3.0 need some help!!

Quote:
Originally Posted by Grubb44 View Post
Yes. Did that just a little while ago. And the blue fluid turned a yellow color.

So there's coolant in your exhaust and one of your compression numbers is low?

Pull the head. Either a gasket or a crack.
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1997 Ranger XLT 4.0L 2wd 3.55 open
RCX leveling coils, Pro Comp AAL, 1" BL
31x10.5x15 General Grabber AT2
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  #15  
Old 03-22-2017, 05:12 PM
Grubb44 Grubb44 is offline
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That's what I was fearing..... Well I didn't give much for the truck. $0.00 to be exact. I've talked to some family members and done ALOT of reading online. Has anyone used the stuff called "blue devil"?? It is kinda expensive, but not near as much as pulling the motor apart and possibly getting head work done..... My 97 currently has the motor pulled for the 4th time, this time due to a snapped crankshaft. Bad luck with that truck.

So has anyone used "blue devil"? If so, thoughts, comments, opinions?? Don't want to spend to much on a free truck. Lol.
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1998 Ford Ranger 3.0 V6 5speed Ext cab. 2 wheel drive
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