Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 6th April 2010, 20:51   #1
Newbie
 
paish's Avatar
 
Join Date: Oct 2006
Location: Pune
Posts: 16
Thanked: 0 Times
Default Cabin hot but temperature gauge normal

Hi,
I own a WagonR which is driven for 40K Kms till date. I happened to get it serviced from the authorized centre a couple of days back in which the engine oil, gear oil, brake oil, spark plugs were changed.

Since then, I have observed that the cabin temperature and also the temperature under the hood is much higher than how it used to be. The gauge still remains in the normal range but I keep getting sweaty in the cabin without the AC, I am pretty sure if I switch on the AC, it'd take a while to cool the cabin because of this behaviour.

The gauge seems to be pretty normal as it rises from "C" to the centre gradually in the morning.

One more thing that the service centre guys recommended and carried out was to clean the injectors and something they called as "throttle body". Can someone please explain what is that?

Any reasons that anyone thinks could be the reason for the hot cabin?

Many Thanks!

Shreyas
paish is offline   Reply With Quote
Old 6th April 2010, 22:56   #2
Senior - BHPian
 
pranavt's Avatar
 
Join Date: May 2008
Location: Mumbai
Posts: 1,628
Thanked: 272 Times
Default

Quote:
Originally Posted by paish View Post
Hi,
I own a WagonR which is driven for 40K Kms till date. I happened to get it serviced from the authorized centre a couple of days back in which the engine oil, gear oil, brake oil, spark plugs were changed.

Since then, I have observed that the cabin temperature and also the temperature under the hood is much higher than how it used to be. The gauge still remains in the normal range but I keep getting sweaty in the cabin without the AC, I am pretty sure if I switch on the AC, it'd take a while to cool the cabin because of this behaviour.

The gauge seems to be pretty normal as it rises from "C" to the centre gradually in the morning.

One more thing that the service centre guys recommended and carried out was to clean the injectors and something they called as "throttle body". Can someone please explain what is that?

Any reasons that anyone thinks could be the reason for the hot cabin?

Many Thanks!

Shreyas
Reason for hot cabin is the summers

Injectors spray the fuel into the engine. Throttle body controls the amount of air that goes into the engine. Your accelerator pedal is connected to the throttle body with a cable and when you press the throttle, the throttle body opens up to let in air into the engine. The ECU senses the intake of air and provides the right amount of fuel to be sprayed by the injectors. Cleaning TB or injectors has nothing to do with rise in ambient temperatures.
pranavt is offline   Reply With Quote
Old 6th April 2010, 23:09   #3
BANNED
 
Join Date: May 2009
Location: haridwar
Posts: 588
Thanked: 448 Times
Default

hey, who told you that temp gauge is there to measure cabin temperatures,or temp under the hood. it measures engine coolant temp,and it will be pretty normal even if your cabin is on fire, till the time you have your radiator in place and radiator fan running.

if there is no problem in FE or performance,there is hardly any use of injector cleaning,guy might be robbing you of labour charges by cleaning injectors even when its not required
dustom_99 is offline   Reply With Quote
Old 6th April 2010, 23:21   #4
Newbie
 
paish's Avatar
 
Join Date: Oct 2006
Location: Pune
Posts: 16
Thanked: 0 Times
Default

Quote:
Originally Posted by dustom_99 View Post
hey, who told you that temp gauge is there to measure cabin temperatures,or temp under the hood. it measures engine coolant temp,and it will be pretty normal even if your cabin is on fire, till the time you have your radiator in place and radiator fan running.

if there is no problem in FE or performance,there is hardly any use of injector cleaning,guy might be robbing you of labour charges by cleaning injectors even when its not required
I never felt or meant that the gauge is measuring my cabin/hood temperature but then if the engine coolant temperature rises, won't it dissipate atleast some amount of it to be felt outside? I guess it would, and that is what am worried about.
Any reason for this rise in temperature felt in the hood/cabin otherwise? I have checked under the hood, and the fan runs periodically as it is supposed to be and the coolant has been changed (supposedly) by those guys in the service.

As for getting the injectors/throttle cleaned, probably I fell to the sweet talks of those service centre as much I tried not to.
On a side note, With Maruti Service stations I've seen they try to make you spend as much as possible with all the stuff they suggest to repair/clean/polish/service.
paish is offline   Reply With Quote
Old 7th April 2010, 00:37   #5
Senior - BHPian
 
pranavt's Avatar
 
Join Date: May 2008
Location: Mumbai
Posts: 1,628
Thanked: 272 Times
Default

There is nothing wrong with doing an injector and TB clean-up at 40k km. A bit of proactive work on the part of A*S*S is better than facing a problem at the middle of a journey and getting conned by roadside mechanics who will overcharge and exaggerate the problem. No relation between cabin and under-hood temperatures. It is summer, like I said above.
pranavt is offline   Reply With Quote
Old 7th April 2010, 10:42   #6
Senior - BHPian
 
prince_pervez's Avatar
 
Join Date: Dec 2006
Location: Redwood shores, CA, USA
Posts: 4,205
Thanked: 30 Times
Default

If everything in the engine bay is good temperature wise then the needle will be neutral. If a fan has konked or coolant has run/leaked out, the gauge will point it out. At the most, you can get the gauge checked if you are absolutely sure.

Last edited by prince_pervez : 7th April 2010 at 10:50.
prince_pervez is offline   Reply With Quote
Old 7th April 2010, 10:48   #7
Senior - BHPian
 
aargee's Avatar
 
Join Date: Jan 2010
Location: KATN
Posts: 4,694
Thanked: 2,115 Times
Default

Shreyas, being a WagonR owner, I feel you don't need to worry anything with your car.
Quote:
Originally Posted by paish View Post
The gauge seems to be pretty normal as it rises from "C" to the centre gradually in the morning.
The above seems to be normal & hence everything is normal.

Quote:
Originally Posted by pranavt View Post
Reason for hot cabin is the summers
+1

Quote:
Originally Posted by prince_pervez View Post
If everything in the engine bay is good temperature wise then the needle will be neutral. If a fan has konked or coolant has run/leaked out, the guage will point it out.
+1
Quote:
Originally Posted by prince_pervez View Post
At the most, you can get the guage checked if you are absolutely sure.
Suggest the above, if you still have doubts.

If you're still not satisfied, try some of the options suggested for Indica in this thread (Indica Xeta - Engine stays at zero heat).

Last edited by aargee : 7th April 2010 at 10:51.
aargee is offline   Reply With Quote
Old 7th April 2010, 11:37   #8
BHPian
 
im_srini's Avatar
 
Join Date: Sep 2006
Location: Portland
Posts: 956
Thanked: 368 Times
Infractions: 0/1 (5)
Smile

Quote:
Originally Posted by paish View Post
I own a WagonR which is driven for 40K Kms till date. I happened to get it serviced from the authorized centre a couple of days back in which the engine oil, gear oil, brake oil, spark plugs were changed. Since then, I have observed that the cabin temperature and also the temperature under the hood is much higher than how it used to be. Any reasons that anyone thinks could be the reason for the hot cabin?
If your engine is otherwise OK, heat may be seeping in through the firewall or the floor. There is a sizable opening in the engine firewall through which the AC & heater pipes enter the cabin. This aperture has a large plastic plug through which the pipes enter the cabin, you can have this area & the plug checked for leaks. Also have the clearance of the exhaust pipe (from the floor) checked along its length, especially around the gear lever as it's not covered by the carpet.

Quote:
Originally Posted by paish View Post
One more thing that the service centre guys recommended and carried out was to clean the injectors and something they called as "throttle body". Can someone please explain what is that?
Remove the rubber intake pipe & check the throttle-body for dirt, dust, & grime. If it's finger-clean you wouldn't need to have the TB cleaned. If you see a lot of grime inside the TB, have your PCV & air-filter checked too.

Ask if by throttle-body cleaning they mean spraying BG cleaner into the TB, if yes, you can avoid it (its just a very easy way for them to make money). If they're planning to clean the TB manually, they'll need to be careful with the IACV - just ask them to follow the procedures set forth in the service manual.
im_srini is offline   Reply With Quote
Old 8th April 2010, 10:42   #9
GTO
Team-BHP Support
 
GTO's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 47,758
Thanked: 89,465 Times
Default

Shreyas, don't sweat (pun intended ). It's merely a coincidence that you got your car serviced at the same time that outside temperatures have soared. I notice my office + car air-cons working harder than usual over the last 7 - 10 days. Western India is HOT!
GTO is offline   Reply With Quote
Old 8th April 2010, 11:03   #10
Senior - BHPian
 
rkbharat's Avatar
 
Join Date: Sep 2006
Location: Gurgaon/New Delhi
Posts: 1,590
Thanked: 608 Times
Default

just from my past experience, scan closely the area below dashboard for any unclosed opening. This happened to my Indica few years back. For some work service guy removed the rubber cover to pass the wire inside and did not closed it

I started feeling hot air around my leg area and car getting really hot.
rkbharat is offline   Reply With Quote
Old 9th April 2010, 14:45   #11
Newbie
 
paish's Avatar
 
Join Date: Oct 2006
Location: Pune
Posts: 16
Thanked: 0 Times
Default Thanks guys!

That really gives me a relief that nothing's really wrong with the temperature. Yes, I will get the gauge checked once for my own satisfaction.

Indeed Western India and especially Pune is very hot these days.

Thanks again!
paish is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Good 'ol Temperature Gauge : Yes or No? GTO Technical Stuff 160 1st March 2017 18:39
Temperature gauge stuck at the same level. Help? rajivanoj Technical Stuff 5 15th January 2013 07:48
After temperature gauge - oil dipstick to go as well? Takumi-san Technical Stuff 2 27th April 2010 16:57
Temperature Gauge links to Fuel Efficieny 2fast4u Technical Stuff 12 21st June 2006 15:39


All times are GMT +5.5. The time now is 07:15.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks