Car temp gauge goes up when going into boost?
03-21-2014, 03:24 PM
#1
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Car temp gauge goes up when going into boost?
Ok now my car is acting up again. The temp gauge stays perfectly where its suppose to be at idle and while cruising. But when i go into boost, say over 3 psi, the temp gauge goes up to 3/4 and then it starts to cool back down when im driving in a vacuum. Heater works so water pump is good. Only coolant leak is from the reservoir lid being fill up from the heat of the engine when it climbed to 3/4 temp. Could a bad thermostat be the culprit? What else can it be? Rad fan turns on.
1993 civic
D16z6
16psi
1993 civic
D16z6
16psi
03-21-2014, 03:38 PM
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03-21-2014, 04:35 PM
#4
Re: Car temp gauge goes up when going into boost?
No it doesnt need to do either of those, pushing coolant into the overflow only after boosting is an almost sure sign of headlift, especially on a sohc
Take the VC off and TQ them headbolts down again, try and save it!
Take the VC off and TQ them headbolts down again, try and save it!
03-21-2014, 04:40 PM
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Re: Car temp gauge goes up when going into boost?
DAMN IT!! Could it be a blown hg cause im about to go borrow my friends compression gauge and see
03-21-2014, 05:16 PM
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03-21-2014, 06:06 PM
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Re: Car temp gauge goes up when going into boost?
Well when I filled the radiator back up with coolant, it took the whole reservoir cause i dump the overflowed fluid back in. I assume the increase in temp was from little fluid from the radiator cause there was just enough coolant to fill the radiator back up... So i think its a bad radiator cap??
03-21-2014, 06:11 PM
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Re: Car temp gauge goes up when going into boost?
It could be a multitude of things. Head lift head gasket bad thermostat airbound system just to start. Is it tuned? Who tuned it? What's the setup?
03-21-2014, 06:23 PM
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Re: Car temp gauge goes up when going into boost?
Ok, just tested it again. Radiator bubbles once every 5 seconds, but when i turn on the heat it stopped completely even when i revved it. So what the hell? And yes its tuned. Street tuned by John Vega at Phearable.
03-21-2014, 06:27 PM
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Re: Car temp gauge goes up when going into boost?
As far as setup,
t3/t4 .48 .62
Oem hg
9.0:1 srp pistons with srp rings
Arp headstud
Adept rods with arp rod bolts
560cc dsm
Walbro 255
t3/t4 .48 .62
Oem hg
9.0:1 srp pistons with srp rings
Arp headstud
Adept rods with arp rod bolts
560cc dsm
Walbro 255
03-21-2014, 06:30 PM
#14
DO IT ON ALL FOURS
Re: Car temp gauge goes up when going into boost?
If it bubbles every so often in the reservoir it is almost surely a blown headgasket or something is cracked. I highly recommend a leak-down test and compression test. A bad radiator cap won't cause bubbles.
03-21-2014, 06:55 PM
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03-21-2014, 07:10 PM
#17
Re: Car temp gauge goes up when going into boost?
Sounds like your not doing any sort of proper bleeding. You cant just fill the rad full after pushing so much coolant and losing it through the overflow, once air gets pulled into the system it can cause all sorts of headaches
Do a good coolant bleed, idle the car with the rad cap off, cabin heat to full hot, top off the radiator until the lower hose gets hot and the rad fan comes on, cap the rad, top off the overflow resevoir (even fill it a half inch above max at this point). Turn the car off and let it cool. The car will probably suck in some from the overflow.
Air in your system can cause weird overflow problems, its so easy to do this procedure you may aswell rule it out, sorry if I get the impression that your not giving it a good air bleed, but it would certainly cause some issues if air was trapped
If you do have ARP headstuds, verifying they are torqued would be a good step at this point to before tearing anything apart, check all 10 in proper sequence, only takes 15 min, they do back off in some instances. I personally TQ with arp lube and do 5ft/lbs above what arp recomends
Do a good coolant bleed, idle the car with the rad cap off, cabin heat to full hot, top off the radiator until the lower hose gets hot and the rad fan comes on, cap the rad, top off the overflow resevoir (even fill it a half inch above max at this point). Turn the car off and let it cool. The car will probably suck in some from the overflow.
Air in your system can cause weird overflow problems, its so easy to do this procedure you may aswell rule it out, sorry if I get the impression that your not giving it a good air bleed, but it would certainly cause some issues if air was trapped
If you do have ARP headstuds, verifying they are torqued would be a good step at this point to before tearing anything apart, check all 10 in proper sequence, only takes 15 min, they do back off in some instances. I personally TQ with arp lube and do 5ft/lbs above what arp recomends
03-22-2014, 08:32 AM
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Re: Car temp gauge goes up when going into boost?
Cyl 1= 107psi, Cyl 2= 178psi, Cyl 3= 180psi, Cyl 4= 170psi. Cyl 1 is the one that has the wastegate placed on top of its runner, so i believe that could have done some damage to the valves?
03-22-2014, 08:36 AM
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Re: Car temp gauge goes up when going into boost?
Sounds like your not doing any sort of proper bleeding. You cant just fill the rad full after pushing so much coolant and losing it through the overflow, once air gets pulled into the system it can cause all sorts of headaches
Do a good coolant bleed, idle the car with the rad cap off, cabin heat to full hot, top off the radiator until the lower hose gets hot and the rad fan comes on, cap the rad, top off the overflow resevoir (even fill it a half inch above max at this point). Turn the car off and let it cool. The car will probably suck in some from the overflow.
Air in your system can cause weird overflow problems, its so easy to do this procedure you may aswell rule it out, sorry if I get the impression that your not giving it a good air bleed, but it would certainly cause some issues if air was trapped
If you do have ARP headstuds, verifying they are torqued would be a good step at this point to before tearing anything apart, check all 10 in proper sequence, only takes 15 min, they do back off in some instances. I personally TQ with arp lube and do 5ft/lbs above what arp recomends
Do a good coolant bleed, idle the car with the rad cap off, cabin heat to full hot, top off the radiator until the lower hose gets hot and the rad fan comes on, cap the rad, top off the overflow resevoir (even fill it a half inch above max at this point). Turn the car off and let it cool. The car will probably suck in some from the overflow.
Air in your system can cause weird overflow problems, its so easy to do this procedure you may aswell rule it out, sorry if I get the impression that your not giving it a good air bleed, but it would certainly cause some issues if air was trapped
If you do have ARP headstuds, verifying they are torqued would be a good step at this point to before tearing anything apart, check all 10 in proper sequence, only takes 15 min, they do back off in some instances. I personally TQ with arp lube and do 5ft/lbs above what arp recomends
03-22-2014, 09:47 AM
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Re: Car temp gauge goes up when going into boost?
Pour oil into the cyl 3 and it went from 180 to 191 so i assume that cyl 1 has a burnt valve. Also cyl 1 was the only one with the spark plug with a black color, the other 3 had a white color
03-22-2014, 11:17 AM
#23
Re: Car temp gauge goes up when going into boost?
Man your diagnosis is all over the map.
Cyl # 1 bumped 10psi with a spoon of oil, then you tried Cyl #3 with a spoon of oil and it also bumped 10psi. That means Cyl #1 has a burnt valve?? but #3 is fine....
TQ your headstuds
Cyl # 1 bumped 10psi with a spoon of oil, then you tried Cyl #3 with a spoon of oil and it also bumped 10psi. That means Cyl #1 has a burnt valve?? but #3 is fine....
TQ your headstuds
03-22-2014, 11:21 AM
#24
Re: Car temp gauge goes up when going into boost?
And just at a glance of your picture. Whats going on with your vacuum line for the MBC you have on the back right of the valve cover?? It looks like you have your BOV and wastegate feeding the MBC, neither getting a vacuum/boost source ....
03-22-2014, 12:14 PM
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Re: Car temp gauge goes up when going into boost?
I dont get what you are trying to say. And for the compression, what do you think? Could improper torque of the headstud cause the lost of 60psi of compression?