1HZ injector pump!

Submitted: Sunday, Jan 25, 2009 at 09:02
ThreadID: 65395 Views:5705 Replies:12 FollowUps:14
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Could advancing the injector pump cause the engine to run hotter?
On a hot day say on idle with aircond on the temp will rise till it turns off the airconditioning, then temp comes back to normal so there fore the aircond will kick back in then the same will happen again.
over heats on long hills and on idle with aircond on in hot conditions.

I am Still having problems with overheatiing.
New PWR radiator, tested new thermostat, new water pump, 50/50 mix of toyota coolant had the aircond radiator blasted with air to remove any grass or bugs.i have tried everything!!

It is turbo intercooled with 3 inch mandrel exhuast.

But did over heat way before i had the turbo put in!
Thanks
Chris
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Reply By: Member - Dennis P (Scotland) - Sunday, Jan 25, 2009 at 09:32

Sunday, Jan 25, 2009 at 09:32
Wouldn't have thought that advancing the pump would cause the overheating.
My Troopy had the same problems, running hot and cutting out the aircon, did everything I could, same as you.
Ended up taking it into garage thinking that I must have had a cracked head/block, turned out to be the thermo fan had carked it.
Hope it is something as simple for you.

Cheers,
Dennis

AnswerID: 345821

Reply By: Member - Hughesy (NSW) - Sunday, Jan 25, 2009 at 11:49

Sunday, Jan 25, 2009 at 11:49
If the pump is overfueling than you will get overheating - no mater how good your cooling system is.

Do you have a pyrometer fitted??

Looks like you have covered all the basic cooling system stuff (except changing the radiator hoses which is highly recommended and also the the viscous hub that runs the fan!) so that leaves the tune of the engine.

Take it too a good diesel mechanic and get it tuned and the fuel adjusted so that your EGT temp (post turbo) is no more than 550 deg C.
AnswerID: 345837

Reply By: qubert - Sunday, Jan 25, 2009 at 12:18

Sunday, Jan 25, 2009 at 12:18
cracked head
AnswerID: 345843

Reply By: qubert - Sunday, Jan 25, 2009 at 12:19

Sunday, Jan 25, 2009 at 12:19
is youre engine fan on the right way
AnswerID: 345844

Reply By: Member - DOZER- Sunday, Jan 25, 2009 at 13:03

Sunday, Jan 25, 2009 at 13:03
99 out of 100 1hz's that do this need new oil in the viscous fan.....this is where a forum helps....$27 from Toyota and 1 hours work. Buy a electric fan and install it up front if you have room, connecting it to the air compresser and your air will also be colder.
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AnswerID: 345850

Follow Up By: Member - DOZER- Sunday, Jan 25, 2009 at 13:20

Sunday, Jan 25, 2009 at 13:20
Advancing the pump is not a good idea, it will increase diesel knock and put it out of spec...The best thing you can do is install an EGT gauge pre turbo (in the manifold) and check your rxhaust temps...if indeed there is too much fuel, you will pass 600 degrees on hills towing. This will cause cracking of the head at a minimum....driving to the gauge and backing off, or backing off fuel so it wont reach 600 are the options. It is quite possible that a dirty air filter will cause high temperatures due to more fuel than normal....thats why its a great idea to have that gauge, especially if you are chasing power.....but back to the overheating...its your viscous fan that is the culpret....i notice its the only thing you havnt tried.
Andrew
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Follow Up By: Member - Ian H (NSW) - Sunday, Jan 25, 2009 at 18:12

Sunday, Jan 25, 2009 at 18:12
The only time in 200k kms that ours overheated was when the viscous coupling carked it. That would be the next thing to replace. I put on a Davies Craig brand and it has been perfect for 100k kms.
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FollowupID: 613888

Reply By: Member - reggy 2 (VIC) - Sunday, Jan 25, 2009 at 14:35

Sunday, Jan 25, 2009 at 14:35
THE VISCIOUS HUB SHOULD BE REPLACED OR REPAIRED HAD THIS PROBLEM IN PAST WITH 2 FREINDS WITH OVER HEATING UNDER LOAD THEY DID ALL OTHER THINGS AS WELL VISCOUS HUB FIXED PROB
CHEERS REGGY2
AnswerID: 345857

Follow Up By: Member - joc45 (WA) - Sunday, Jan 25, 2009 at 15:57

Sunday, Jan 25, 2009 at 15:57
Sssh! not so loud!
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FollowupID: 613866

Reply By: iccey_1969 - Sunday, Jan 25, 2009 at 22:54

Sunday, Jan 25, 2009 at 22:54
Yes one thing i forgot to mention was that i had purchased a new fan from toyota but it was non genuine.
So then i got my old one and got the viscus fluid from black toyota in warwick QLD pulled it appart and filled it till it was full about 1 and a half tubes i used.
Made no difference!
As for a cracked head, nope had the head off last year because it had a leak at the back of the head with oil.
had it checked he said no problem! new gasket and no more leaks.
Dont loose any coolant at all.
As for the hoses well they are 3 years old. so ok maybe i will replace them. but still why does it get hot at idle when aircond is on?when i say hot it creaps up about 2/3 from half way then auto aircond switches off and engine goes back to normal opperating temp which is just under half. then it resets and aircond switches back on and within 2 min the temp starts to rise!
Im frustrated and it has cost me thousands!!!!!!
My partner told me to stop working on it or she will leave me!
Gee ill miss her!
AnswerID: 345925

Follow Up By: iccey_1969 - Sunday, Jan 25, 2009 at 22:57

Sunday, Jan 25, 2009 at 22:57
Oh i do have a EGT guage, cant get it over 480 deg
it starts to overheat at 330 deg and up.
well i run out of hills so never could reach those temps.
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FollowupID: 613926

Follow Up By: stephen looking - Monday, Jan 26, 2009 at 13:35

Monday, Jan 26, 2009 at 13:35
Where is the EGT gauge located pre or post turbo i remember reading that the temps would be different
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FollowupID: 613985

Reply By: qubert - Monday, Jan 26, 2009 at 10:17

Monday, Jan 26, 2009 at 10:17
the head has to be pulled apart ( valves taken out ) to inspect it properly. the other thing maybe your turbo water line is getting gas in it from the exhaust side of turbo. i dont know how the water circulates once its in there, but if you have ran out of ideas maybe its another thing to check.
are the fan blades on the right way. may sound silly .
AnswerID: 345977

Follow Up By: qubert - Monday, Jan 26, 2009 at 10:18

Monday, Jan 26, 2009 at 10:18
you can get stuff from caterpillar that detects exhaust gas in coolant too.
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FollowupID: 613958

Follow Up By: stephen looking - Monday, Jan 26, 2009 at 13:32

Monday, Jan 26, 2009 at 13:32
Agree with qubert, but just go to a radiator shop and get them to do a exhaust gas test on your coolant, should cost nothing.

Cheers.......Steve

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FollowupID: 613984

Reply By: stephen looking - Monday, Jan 26, 2009 at 13:30

Monday, Jan 26, 2009 at 13:30
Iccey, Looks like you spent a bit of coin and probably lost a bit more hair over this problem mate, are you looking at the original temp gauge ? why not try a VDO water temp gauge or similar, maybe its a faulty gauge.

Also depends where you are Mike Vine turbos (Brisbane) does some quality work and will make sure its all ok for you, there was also a guy in cairns ray(doesn't ware shoes)?? if i find the info i will pass on.

Hope you get it sorted.......Steve
AnswerID: 345996

Reply By: iccey_1969 - Monday, Jan 26, 2009 at 14:58

Monday, Jan 26, 2009 at 14:58
yes thanks, the fan is working in the right dirtection sucking air from the front.
Secondly i have 2 temp guages would you beleive and both are seperated.
First one is under the inlet manifiold and that one goes to the guage inside dash, second one is for the Aircond which is off the top hose housing that goes into the radiator. now if the temp gause in the dash starts to rise but the aircond didnt turn itself off then yes i would suspect it was the guage.
but as soon as the dash gauge goes to nearly 3/4 the aircond compressor stops untill the gauge reads back to normal.
so there are 2 different guages working seperately.
i know this because i disconected one of them and the guage in dash worked but aircond stopped.
when i disconected the in dash one, aircond worked but dash did not.
so im pssitive it isnt the guages.

EGT guage is located 4 inches after the turbo on the exhaust side.
On the highway 100 kmh it hangs around 240 -260 c
i was told by the turbo guys i can get it up to 550 c but not for long periods. i cant even get it to 500 c too much power and i dont want a ticket for speeding.
im thinking about the david craig electric water pump. anyone with experience with them?
AnswerID: 346009

Follow Up By: iccey_1969 - Monday, Jan 26, 2009 at 15:04

Monday, Jan 26, 2009 at 15:04
And about the radiator coolant. im not loosing any water at all.
If i check when cool the water is all the way up to cap and reservoir is normal hight.
only time i have heating probs is in the summer hot months, there after no probs!
winter i can go up the Cunningham's gap it wont budge!
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FollowupID: 613999

Reply By: Noisy Mango - Monday, Jan 26, 2009 at 23:22

Monday, Jan 26, 2009 at 23:22
Hi Chris,
Have been following your posts with interest. We have a 1HZ which we have recently fitted an intercooler to - & have exactly the same problem as you! Fine on cold days, but when it starts heating up a bit - up goes the temp gauge. We think the intercooler was the straw that broke the camels back - has just pushed it over the edge. We have just started down the same path as you & have fitted the egt, boost gauge, tested & replaced the thermo fan. About to replace the radiator, hoses, thermostat & water pump, remove the driving lights, etc, etc.
Ours also overheated prior to the intercooler, but only on one particular hill, but now more frequently.
Let us know if you manage to fix your problem, might save us some $$!!!
Wayne.
AnswerID: 346102

Follow Up By: iccey_1969 - Tuesday, Jan 27, 2009 at 15:17

Tuesday, Jan 27, 2009 at 15:17
Hi there wayne,
If there is anyway i can help im happy to just let me know and ill give u my contact number. maybe we can both work this out?
Cheers
Chris
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FollowupID: 614144

Follow Up By: iccey_1969 - Saturday, Feb 14, 2009 at 08:25

Saturday, Feb 14, 2009 at 08:25
Hi wayne here is a post i just put in the forum thread no 65959
or if ur up now it will be on the top of the list.
Hope this helps you with your overheating problems.
regards
Chris
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FollowupID: 617182

Follow Up By: Wayne (NSW) - Saturday, Feb 14, 2009 at 09:01

Saturday, Feb 14, 2009 at 09:01
Wayne,

Will you have some driving lights for sale soon?

When I had the 75 Series with driving lights it had an overheating problem. With the 78 Series, no driving lights, no over heating.

The head light up grade that you have should give you all the light that you need for night driving.

Wayne

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FollowupID: 617187

Follow Up By: Noisy Mango - Sunday, Feb 15, 2009 at 00:04

Sunday, Feb 15, 2009 at 00:04
Hi Wayne & Chris,

Yep, at the top of the list, along with moving the number plate. Glad you have solved your problems Chris. We have a set of Hella Rallys which are going to have to go.

You are correct Wayne, the headlight upgrade should do the job - maybe some small HID spotties! We haven't spent any more time on the problem at the moment as the gearbox in our other work vehicle has blown up so the Troopy is now doing double duty.

Will let you know how we go!

Wayne.
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FollowupID: 617332

Follow Up By: iccey_1969 - Sunday, Feb 15, 2009 at 07:51

Sunday, Feb 15, 2009 at 07:51
Hi noisy mango,
I might be interested in your spotlights, do you have photos? and do they come with covers? and what condition?
The spotlights i have will have to go and the bull bar as well.

As I have it i have a spare Gearbox!
very good condition, only reason it is out of my car is because when i was driving along i heard a high pitch whine. i thought the box had pooped it self so purchased a new one from toyota.
when the mechanic took the box out he said he will pull it appart if i like, and see what happend. Hence all it was is the thrust washer, so he got me a $30 one from toyota and it was twice the thickness of the original they said it was to fix the problem for good.

my phone number is 07 46833 369
0419 670 881
Regards Chris
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FollowupID: 617346

Follow Up By: Noisy Mango - Sunday, Feb 15, 2009 at 12:08

Sunday, Feb 15, 2009 at 12:08
Hi Chris,

The spotties were given to us by a friend so will return them to him. They are rather large.

Unfortunetely the work vehicle is a VW Caddy - might have some trouble fitting your gearbox in there! New one on the way from VW. Makes 4wd look cheap to repair!

Regards, Wayne.
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FollowupID: 617390

Reply By: Member -Walkabout(NSW) - Tuesday, Jan 27, 2009 at 08:36

Tuesday, Jan 27, 2009 at 08:36
iccey,
I have a friend who had a similar problem. He added a small radiator not much bigger than a heater element to his cooling system, mounted in the centre section of his bullbar. It solved the problem. He said that he felt the cooling system just did not have sufficient capacity once he turboed the motor. He has since sold the vehicle, but I could put you in touch with him if all else fails.
Regards,
Walkabout
AnswerID: 346117

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