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+--- Thread: Intermittent overheating (/showthread.php?tid=3590)
Intermittent overheating - sassparilla_kid - 04-30-2012
Just like the title says, intermittent overheating 617 turbo.
The symptoms:
-overheats when accelerating
-overheats when decelerating
-overheats at stops
-driving at a constant speed it will randomly overheat and then cool off, the needle moving from about 85-90* up to 100*
-turning the heater on full blast doesn't seem to help
-some days the car overheats and some it doesn't, and so far it seems weather conditions aren't affecting it because it can be cold and overheating one day and then hot and running fine the next
-also lately the engine seems to be really shaky at idle, well not too bad but it shakes rhythmically and then gets the whole car shaking (driver side motor mount new, passenger side isn't new but definitely not bad)
This overheating thing is starting to get really annoying.
Also, not sure if it matters or not but I think the cooling system is probably about 85% water, since I after flushing the system I had a hose break and dump most of the coolant, and then it got refilled with water since I didn't have any anti-freeze with me
RE: Intermittent overheating - willbhere4u - 04-30-2012
Could it be a faulty gauge? mine bounces around but the engine is right at temp
RE: Intermittent overheating - Hercules - 04-30-2012
If the gauge flickers up or down (does not move smoothly) suspect faulty gauge. Try this , when gauge reads high,slap the top of dash near cluster briskly,if temp.reading jumps down,then most likely gauge problem. DO check connector pins for tightness,also ck case screws at speedometer for tightness,(electrical conn. on base of). One last thing ,ck temp. sender conn.
Good luck.
RE: Intermittent overheating - sassparilla_kid - 04-30-2012
Yeah I'm thinking now that it may be the gauge, because sometimes it moves smoothly and sometimes jumps around. The temp sender is less than a year old so I don't think that's the problem. I'll try swapping in another gauge I guess and see if the problem persists
RE: Intermittent overheating - willbhere4u - 04-30-2012
It usually a grounding issue that causes it
RE: Intermittent overheating - sassparilla_kid - 05-01-2012
(04-30-2012, 10:39 PM)willbhere4u It usually a grounding issue that causes it
I thought that might be the case with with my fuel gauge because its a little jumpy so I added an extra ground to the cluster, didn't seem to help/do much, other than the still works even if its power cable is the only thing plugged in
RE: Intermittent overheating - willbhere4u - 05-02-2012
You might check the engine ground. Also there are like 30 brown ground wires going to one bolt under the cluster I would take them apart and clean them up and reinstall it
RE: Intermittent overheating - yankneck696 - 05-02-2012
Checking, cleaning & di-electric greasing all of your grounds & connections should solve it. You may want someone in the car while you shake the hell out of your engine harness.
Another possibility is a water pump impellor that got sheared off by starting the engine in sub-zero conditions without the proper antifreeze/water mixture...... Please don't ask....
Ed
RE: Intermittent overheating - sassparilla_kid - 05-03-2012
I am leaning more towards electrical issue more than water pump impellor at this point, seeing as how it doesn't get quite that cold here.
RE: Intermittent overheating - plurkje - 05-09-2012
Does the engine built up pressure in coolant system? Feel the big hoses, do they get hard? When you release the fillercap is there still pressure after a night stand still? If all are; Yep.
Head gasket is blown.
RE: Intermittent overheating - sassparilla_kid - 05-09-2012
The only pressure is steam pressure, and there is very little to none at all. I'm pretty sure its an electrical issue with the gauge or the sensor, since it hasn't been doing it at all lately, and its been a lot warmer out
RE: Intermittent overheating - plurkje - 05-11-2012
Check the connector at the sensor first, it's behind the injector lines. Have someone to wobble the wire while you watch the gauge.