overheat?
Thread Starter
|
Senior User
Joined: Dec 2003
Posts: 180
Likes: 0
From: dallas
overheat?
ok, evrything works on my truck, right?
check this..... when i turn on my a/c, 2 things happen.
1 my temp gauge climbs to right at the 'hot' level and
2 my oil pressure gauge goes to 'high'.
i already checked the water and oil levels, recently changed the thermostat and water pump and valve cover gaskets and radiator. any thoughts? it runs fine, i just dont want to crack the heads like i did on my last motor.
thanx
check this..... when i turn on my a/c, 2 things happen.
1 my temp gauge climbs to right at the 'hot' level and
2 my oil pressure gauge goes to 'high'.
i already checked the water and oil levels, recently changed the thermostat and water pump and valve cover gaskets and radiator. any thoughts? it runs fine, i just dont want to crack the heads like i did on my last motor.
thanx
Thread Starter
|
Senior User
Joined: Dec 2003
Posts: 180
Likes: 0
From: dallas
it runs hotter at both fast and slow... the history is that ive put replaced just about everything but the condenser, but im not sure if replacing that would help. heater core, radiator, thermostat, waterpump, and top radiator hose have been done pretty recent.
Thread Starter
|
Senior User
Joined: Dec 2003
Posts: 180
Likes: 0
From: dallas
Trending Topics
Postmaster
Joined: Oct 2003
Posts: 4,516
Likes: 1
From: SoCal
Flush the condensor/radiator from the engine side with a garden hose. Not too much pressure, the cooling fins can bend easily.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
Did these problems begin before you did all this work????
What event preceeded the guages acting up????
On the coolant temp thing, I hesitate to ask this, but are you certain you didn't install the thermostat backwards, if it can be done so, on your year/model??
When you replaced the radiator, was it with the same sized one????
I noticed you replaced the top radiator hose but not the bottom one.
Are you shure the bottom one isn't soft & collapsing some & restricting coolant flow.
On the oil pressure rise, did it occur at the same time the coolant temp guage began acting up???
If not, what event preceeded it's acting up???
We may have two separate problems here.
What event preceeded the guages acting up????
On the coolant temp thing, I hesitate to ask this, but are you certain you didn't install the thermostat backwards, if it can be done so, on your year/model??
When you replaced the radiator, was it with the same sized one????
I noticed you replaced the top radiator hose but not the bottom one.
Are you shure the bottom one isn't soft & collapsing some & restricting coolant flow.
On the oil pressure rise, did it occur at the same time the coolant temp guage began acting up???
If not, what event preceeded it's acting up???
We may have two separate problems here.
Thread Starter
|
Senior User
Joined: Dec 2003
Posts: 180
Likes: 0
From: dallas
ok new thing ive noticed.
when the a/c is on and everything is going wierd, when i turn the a/c completely off and the temp gage settles back down, as does my oil pressure gage. not sure if that means somethin or not. i just noticed this tonite, when i was on my way to a friend's graduation.
pawpaw-
both problems happen at the same time. i checked all the hoses, i know the thermostat is in correct because i watched a mechanic friend do it at the same time he did the water pump. the water pump and radiator are original replacement parts. anything else?
when the a/c is on and everything is going wierd, when i turn the a/c completely off and the temp gage settles back down, as does my oil pressure gage. not sure if that means somethin or not. i just noticed this tonite, when i was on my way to a friend's graduation.
pawpaw-
both problems happen at the same time. i checked all the hoses, i know the thermostat is in correct because i watched a mechanic friend do it at the same time he did the water pump. the water pump and radiator are original replacement parts. anything else?
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
Well as you desribe it, sounds like the guages behave normally until the AC is switched on, is this correct???
The engine isn't really overheating, correct???
Did this guage problem begin BEFORE all this work was done????
Why were the radiator, water pump & upper hose replaced???
The engine isn't really overheating, correct???
Did this guage problem begin BEFORE all this work was done????
Why were the radiator, water pump & upper hose replaced???
Thread Starter
|
Senior User
Joined: Dec 2003
Posts: 180
Likes: 0
From: dallas
it hasnt really overheated yet, i just dont want to crack the heads again. and this is a recent problem, 1 month after water pump and hose replacement, about 6 months after radiator replacement. and it only does it when i turn the ac on high. replaced the radiator cause it was blocked about halfway down, and the waterpump was starting to go out, so i got a mechanic friend to do it while i watched.
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
Ok, only does this when you have the AC on "high", does this mean having the blower motor speed switch on high??
If you put the blower speed switch on lower settings, are things ok????
Will the guages act out if you turn the blower motor speed on high, while in, say the vent, or heat mode???
Will they act out if you're in defrost & low or high fan speed???
If you put the blower speed switch on lower settings, are things ok????
Will the guages act out if you turn the blower motor speed on high, while in, say the vent, or heat mode???
Will they act out if you're in defrost & low or high fan speed???