84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

87 Toyota pickup overheating and stalling when not on gas

Thread Tools
 
Search this Thread
 
Old 09-25-2021 | 10:32 AM
  #1  
ggrigsby77's Avatar
Thread Starter
Registered User
 
Joined: Jan 2020
Posts: 6
Likes: 0
Exclamation 87 Toyota pickup overheating and stalling when not on gas

[QUOTE=ggrigsby77;52468689]Hello, I was driving home after getting new tires on and I noticed my truck was running hot. Increased quite rapidly. I've never had over heating issues. While driving the car shut off, I let it sit and cool off. It had a hard time starting and once started it would stall if my foot wasn't on the gas. I was able to get it home but it was hot and stalled around every corner. Any ideas?
130k miles.
Old 09-25-2021 | 12:58 PM
  #2  
2ToyGuy's Avatar
Registered User
 
Joined: Jul 2005
Posts: 2,322
Likes: 647
From: Chiloquin, OR
Water pump belt broke/was thrown off?
Radiator downtubes clogged with corrosion? Visual check easy to spot. Just look at what you can see inside the hole for the cap.
Does the lower radiator hose get fairly warm to the touch, even up to too hot to touch? If not, clogged radiator.
Radiator fins outside clogged with mud, dirt, bugs, leaves, etc?
Water pump no longer functioning internally? Is it circulating water in the radiator once the thermostat opens? Feel the radiator, driver's side. If it doesn't get suddenly very warm when the thermostat opens, bad water pump, or broken belt.
IS the thermostat opening? Does the upper radiator hose suddenly get really hot as the engine warms up?
Fan clutch bad? Was the fan making the "whoooooshing" sound once the engine got hot, and when you first start the engine for about 30 seconds to 1 minute? If not, bad belt or fan clutch.
Radiator's fan shroud properly installed, INCLUDING the little strip on the bottom that is removable?

There's some things I've had go bad on ME so far, on my 2 87's.
Good luck!
Pat☺
Old 09-27-2021 | 06:20 AM
  #3  
13Swords's Avatar
Registered User
 
Joined: Jun 2016
Posts: 643
Likes: 167
From: Florida
Listen to Pat, he more than knows what he's talking about.
The following users liked this post:
Damion812 (03-31-2022)
Old 09-27-2021 | 10:59 AM
  #4  
2ToyGuy's Avatar
Registered User
 
Joined: Jul 2005
Posts: 2,322
Likes: 647
From: Chiloquin, OR
Originally Posted by 13Swords
Listen to Pat, he more than knows what he's talking about.
Don't spread it around!
You'll ruin my rep. I have an idiot rep to maintain, after all

Seriously, or at least as serious as I ever get, thanks for the recommendation. I appreciate the back up.

Have fun, gang.
Pat☺
The following users liked this post:
13Swords (10-11-2021)
Old 10-04-2021 | 10:18 PM
  #5  
ggrigsby77's Avatar
Thread Starter
Registered User
 
Joined: Jan 2020
Posts: 6
Likes: 0
Originally Posted by 2ToyGuy
Don't spread it around!
You'll ruin my rep. I have an idiot rep to maintain, after all

Seriously, or at least as serious as I ever get, thanks for the recommendation. I appreciate the back up.

Have fun, gang.
Pat☺
So I went to do my checks and as I did I figured I'd do a little tune up as well (spark plugs, etc). I got to doing the oil and it dumped coolant. Than milky oil and then a clean layer of oil. Seems to be a blown head gadket
Old 10-05-2021 | 12:13 PM
  #6  
2ToyGuy's Avatar
Registered User
 
Joined: Jul 2005
Posts: 2,322
Likes: 647
From: Chiloquin, OR
Yup.
And oil makes for a lousy coolant. Especially when mixed with regular coolant.

I would say time for a new head gasket. There are kits that have all the various new gaskets you need to replace the head gasket. Intake manifold gaskets, exhaust gasket, valve cover gasket set, etc. It takes a lot more than just a head gasket. When I did my 87 4Runner's head gasket, I bought a gasket kit from Fel-Pro. I think it was $200.00 or thereabouts, but this was 20+ years ago, so...
Still running to this day, though, so IMHO, a decent gasket set.

BTW: while the intake is off, check the small water hoses under the throttle body. They're getting a bit old, by now, so they might need replacement. Great time to check, and as required, replace them, so one doesn't blow out on the highway some day. Or night after a long day of work. Or off-roading

Good time to check, and as needed, replace the PCV valve and grommet. The grommet gets brittle over time, and if/when you pull the PCV for testing/replacement, it can disintegrate. If you have the valve cover off, the grommet can't fall down into the valve train.

Good luck!
Pat☺
Old 03-30-2022 | 08:53 AM
  #7  
Yoogy's Avatar
Registered User
 
Joined: Sep 2019
Posts: 12
Likes: 1
From: Midwest
I’ve read the lower rad hose should be cooler than the upper hose, so to touch, if rad is circulating properly.
Old 03-30-2022 | 03:32 PM
  #8  
2ToyGuy's Avatar
Registered User
 
Joined: Jul 2005
Posts: 2,322
Likes: 647
From: Chiloquin, OR
CoolER, yes. Compared to the upper radiator hose. HOWEVER: Be aware that "cooler" is a relative term. Cooler than the upper hose may well still not be cool enough to touch.

Be very cautious touching nearly any engine component when the engine is thoroughly warmed up. Most will cause the human hand pain, and most likely, actual burns.
To check temperatures of anything under the hood, IE: the inner face of the hood down to the ground, always use a remote reading thermometer. One of the point and read kind. Touch nothing under there with your hand, ever, unless it's cooled down for several hours.

That advice comes from a lot of personal experience, just so y'all know
Pat☺
The following users liked this post:
13Swords (03-31-2022)
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jjjjjoey
86-95 Trucks & 4Runners
10
03-20-2012 04:42 PM
michalik_piotr
95.5-2004 Tacomas & 96-2002 4Runners
6
05-09-2008 08:20 AM
asudan96Runner
95.5-2004 Tacomas & 96-2002 4Runners
40
08-23-2003 06:49 AM
Sac State
95.5-2004 Tacomas & 96-2002 4Runners
2
06-27-2003 02:10 PM



Quick Reply: 87 Toyota pickup overheating and stalling when not on gas



All times are GMT -8. The time now is 10:39 PM.