Stock ZL1 217* IAT2 temps??? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

sweet99ss · 09-07-2019, 10:37 PM

So I hooked up my dashlogic and set it to zl1 iat2 setting and after a 1/4 mile pull i was at 217* iat2 temp. Iat1 was at 86*. I wonder if this is reading correctly or am I missing something? It never pulled any timing which makes me wonder if this iat2# is correct?

Also my timing was right around 16-17 degrees. That normal as well?

RobZL1 · 09-08-2019, 07:09 AM

The timing numbers are somewhat possible if the 217* you saw was shortly after a 1/4 mile pull (within a few seconds). IAT2 keeps rising for a brief period when you let off after a pull.

Just doing the math in a stock tune, it is possible to be around 16 degrees of timing in this situation (somewhere in the 14-16 range, anyway).

This assumes your temp at the actual point you rolled through the traps was lower than 217, and kept climbing (which it normally does) before you looked at the gauge. It probably goes without saying, but to get anywhere near those temps, something has to be malfunctioning in the HEX system.

sweet99ss · 09-08-2019, 10:19 AM

I dont see how thos numbers could be correct and it never even pulled timing

RobZL1 · 09-08-2019, 11:28 PM

Well, if you do all the math from base timing to ECT adder, to PE/COT adder, along with the various multipliers, it can get you there when IAT's are in the 180-210 area. Go do the math and see for yourself. I'm assuming you have a log if you somehow know that it's not pulling timing? Anyway, best of luck. I hope you figure out the culprit, be it an erroneous reading or a faulty HEX system.

sweet99ss · 09-09-2019, 12:23 PM

I was using the dashlogic to read all the info, but I also have efilive I can hook up to verify. I'll probably start by doing that today

VRZL113 · 09-10-2019, 11:32 AM

Check your intercooler/heat exchanger coolant. Might be low. The pump won't turn on if the coolant is low. 217 IAT2's is extremely high, even for a hot day.

sweet99ss · 09-11-2019, 11:48 PM

Finally got a minute today to go by the garage and check out my s/c coolant level. Pulled the cap off and sure enough it's dry! Going to get some dexcool and start the car tomorrow to see if the pump is even kicking since it's low on coolant.

Thanks for the heads up VRZL113

*mlee* · 09-12-2019, 12:02 AM

As soon as air hits the pump it cavitates and shuts off. Definitely need to keep it full. Get an aftermarket reservoir which makes filling much easier.

https://www.camaro5.com/forums/showp...&postcount=951

sweet99ss · 09-12-2019, 10:05 PM

So I verified it was low on coolant. Filled it best I could. Still must be air in the system. Start the car pump runs for about 18 seconds and shuts off and does not come back on. Whats the cheapest tool I can get to purge the system?

ABM Camaro · 09-12-2019, 10:23 PM

Quote:

Originally Posted by sweet99ss

So I verified it was low on coolant. Filled it best I could. Still must be air in the system. Start the car pump runs for about 18 seconds and shuts off and does not come back on. Whats the cheapest tool I can get to purge the system?

If it does that, Its still low on coolant. Once you get it filled, it will continue to run at temperature

sweet99ss · 09-12-2019, 10:26 PM

Quote:

Originally Posted by ABM Camaro

If it does that, Its still low on coolant. Once you get it filled, it will continue to run at temperature

Right it's full to the top though so I must have air trapped. I think I need to get a tool to properly vacuum the system. Can I rent one or anybody know of a cheap one to buy?

ZMEnow · 09-13-2019, 07:41 AM

Quote:

Originally Posted by sweet99ss

Right it's full to the top though so I must have air trapped. I think I need to get a tool to properly vacuum the system. Can I rent one or anybody know of a cheap one to buy?

Get a 3/8 hex extension and loosen but DO NOT remove the HX vent plug through the front grille upper left facing the car. Be sure the Extension fits well or you will strip the head. Now with the vent open also open your fill plug at SC, that should allow a gravity bleed. Close the HX vent and refill, repeat until full.

Or as mentioned get a reservoir. I have the MAC tool vacuum I paid 230 never used it as I have a lift so I just remove the speed clip on the lower pump HX line open my reservoir and SC fill plug and drain the whole thing into a bucket. Refill through reservoir until it begins to fill, then fill remainder through SC fill plug unit reservoir is full, run motor with reservoir open add fluid as needed.

sweet99ss · 09-13-2019, 08:51 PM

would this work lol? I gotta shop vac

sweet99ss · 09-16-2019, 12:17 PM

so ended up filling the system through the bottom up with an electric fluid transfer pump that I already had in the garage. Worked great. Then just to make sure I had all air out I did basically like the video above but with a fluid pump.

No air in system and now pump stays running constantly. Also temps after a full 1/4 pull + are under 140. Dropped 80 degrees lol.

09-07-2019, 10:37 PM	#1
sweet99ss Drives: 2012 ZL1 Camaro Join Date: Dec 2015 Location: Plains KS Posts: 219	*Stock ZL1 217 IAT2 temps???** So I hooked up my dashlogic and set it to zl1 iat2 setting and after a 1/4 mile pull i was at 217* iat2 temp. Iat1 was at 86*. I wonder if this is reading correctly or am I missing something? It never pulled any timing which makes me wonder if this iat2# is correct? Also my timing was right around 16-17 degrees. That normal as well? __________________ ~01 zO6~ (Procharged/bolt-ons) SOLD ~05 Vette~ (Procharged/Bolt-ons) SOLD ~98 Z28~ (TMS 408/RPM LVL 6/Circle D4k) SOLD. ~00 SS~ (Forged LS/IIHS 7875 Turbo/RPM Lvl 6/Strange S60) 10.3-141 ~2010 SS~ (SLP TVS2300 Blower/Speed Eng LT's) ~2012 ZL1~ (IIHS Twin Turbo)

09-08-2019, 07:09 AM	#2
RobZL1 fo'shizZL1 Drives: 2017 ZL1 Join Date: Aug 2017 Location: ATL Posts: 1,281	The timing numbers are somewhat possible if the 217* you saw was shortly after a 1/4 mile pull (within a few seconds). IAT2 keeps rising for a brief period when you let off after a pull. Just doing the math in a stock tune, it is possible to be around 16 degrees of timing in this situation (somewhere in the 14-16 range, anyway). This assumes your temp at the actual point you rolled through the traps was lower than 217, and kept climbing (which it normally does) before you looked at the gauge. It probably goes without saying, but to get anywhere near those temps, something has to be malfunctioning in the HEX system. __________________ 2017 ZL1 M6 Black \| Maggie 2650 // 103TB // Big Gulp Past Rides- 2014 ZL1 M6 Red Hot \| Tons of mods 2004 CTS-V M6 Silver \| Many mods 1995 Corvette M6 Torch Red \| A few more mods 1992 Camaro M5 White \| A few mods

09-08-2019, 10:19 AM	#3
sweet99ss Drives: 2012 ZL1 Camaro Join Date: Dec 2015 Location: Plains KS Posts: 219	I dont see how thos numbers could be correct and it never even pulled timing __________________ ~01 zO6~ (Procharged/bolt-ons) SOLD ~05 Vette~ (Procharged/Bolt-ons) SOLD ~98 Z28~ (TMS 408/RPM LVL 6/Circle D4k) SOLD. ~00 SS~ (Forged LS/IIHS 7875 Turbo/RPM Lvl 6/Strange S60) 10.3-141 ~2010 SS~ (SLP TVS2300 Blower/Speed Eng LT's) ~2012 ZL1~ (IIHS Twin Turbo)

09-08-2019, 11:28 PM	#4
RobZL1 fo'shizZL1 Drives: 2017 ZL1 Join Date: Aug 2017 Location: ATL Posts: 1,281	Well, if you do all the math from base timing to ECT adder, to PE/COT adder, along with the various multipliers, it can get you there when IAT's are in the 180-210 area. Go do the math and see for yourself. I'm assuming you have a log if you somehow know that it's not pulling timing? Anyway, best of luck. I hope you figure out the culprit, be it an erroneous reading or a faulty HEX system. __________________ 2017 ZL1 M6 Black \| Maggie 2650 // 103TB // Big Gulp Past Rides- 2014 ZL1 M6 Red Hot \| Tons of mods 2004 CTS-V M6 Silver \| Many mods 1995 Corvette M6 Torch Red \| A few more mods 1992 Camaro M5 White \| A few mods

09-09-2019, 12:23 PM	#5
sweet99ss Drives: 2012 ZL1 Camaro Join Date: Dec 2015 Location: Plains KS Posts: 219	I was using the dashlogic to read all the info, but I also have efilive I can hook up to verify. I'll probably start by doing that today __________________ ~01 zO6~ (Procharged/bolt-ons) SOLD ~05 Vette~ (Procharged/Bolt-ons) SOLD ~98 Z28~ (TMS 408/RPM LVL 6/Circle D4k) SOLD. ~00 SS~ (Forged LS/IIHS 7875 Turbo/RPM Lvl 6/Strange S60) 10.3-141 ~2010 SS~ (SLP TVS2300 Blower/Speed Eng LT's) ~2012 ZL1~ (IIHS Twin Turbo)

09-10-2019, 11:32 AM	#6
VRZL113 Drives: 2013 VR ZL1, M6 Join Date: Nov 2017 Location: PA Posts: 336	Check your intercooler/heat exchanger coolant. Might be low. The pump won't turn on if the coolant is low. 217 IAT2's is extremely high, even for a hot day. __________________ #3257 \| 485whp 526wtq \| K&N 63-3079 \| Gates K080660HD (Green Belt) \| ACDelco UPF48R \| ZL1 Addons Wicker Bill \| Mild2Wild

09-11-2019, 11:48 PM	#7
sweet99ss Drives: 2012 ZL1 Camaro Join Date: Dec 2015 Location: Plains KS Posts: 219	Finally got a minute today to go by the garage and check out my s/c coolant level. Pulled the cap off and sure enough it's dry! Going to get some dexcool and start the car tomorrow to see if the pump is even kicking since it's low on coolant. Thanks for the heads up VRZL113 __________________ ~01 zO6~ (Procharged/bolt-ons) SOLD ~05 Vette~ (Procharged/Bolt-ons) SOLD ~98 Z28~ (TMS 408/RPM LVL 6/Circle D4k) SOLD. ~00 SS~ (Forged LS/IIHS 7875 Turbo/RPM Lvl 6/Strange S60) 10.3-141 ~2010 SS~ (SLP TVS2300 Blower/Speed Eng LT's) ~2012 ZL1~ (IIHS Twin Turbo)

09-12-2019, 12:02 AM	#8
mlee CamaroFans.com Drives: ZLE & ZR2 Join Date: Oct 2008 Location: Conroe, TX Posts: 37,507 View My Garage	As soon as air hits the pump it cavitates and shuts off. Definitely need to keep it full. Get an aftermarket reservoir which makes filling much easier. https://www.camaro5.com/forums/showp...&postcount=951 __________________

09-12-2019, 10:05 PM	#9
sweet99ss Drives: 2012 ZL1 Camaro Join Date: Dec 2015 Location: Plains KS Posts: 219	So I verified it was low on coolant. Filled it best I could. Still must be air in the system. Start the car pump runs for about 18 seconds and shuts off and does not come back on. Whats the cheapest tool I can get to purge the system? __________________ ~01 zO6~ (Procharged/bolt-ons) SOLD ~05 Vette~ (Procharged/Bolt-ons) SOLD ~98 Z28~ (TMS 408/RPM LVL 6/Circle D4k) SOLD. ~00 SS~ (Forged LS/IIHS 7875 Turbo/RPM Lvl 6/Strange S60) 10.3-141 ~2010 SS~ (SLP TVS2300 Blower/Speed Eng LT's) ~2012 ZL1~ (IIHS Twin Turbo)

09-16-2019, 12:17 PM	#14
sweet99ss Drives: 2012 ZL1 Camaro Join Date: Dec 2015 Location: Plains KS Posts: 219	so ended up filling the system through the bottom up with an electric fluid transfer pump that I already had in the garage. Worked great. Then just to make sure I had all air out I did basically like the video above but with a fluid pump. No air in system and now pump stays running constantly. Also temps after a full 1/4 pull + are under 140. Dropped 80 degrees lol. __________________ ~01 zO6~ (Procharged/bolt-ons) SOLD ~05 Vette~ (Procharged/Bolt-ons) SOLD ~98 Z28~ (TMS 408/RPM LVL 6/Circle D4k) SOLD. ~00 SS~ (Forged LS/IIHS 7875 Turbo/RPM Lvl 6/Strange S60) 10.3-141 ~2010 SS~ (SLP TVS2300 Blower/Speed Eng LT's) ~2012 ZL1~ (IIHS Twin Turbo)