thirsty 100 series

[The Walrus]

I have an 03 GXL 100 series with the 1HZ, I've had it since new and it has always been smokey, 'really smokey'.Toyota looked at the problem a number of times, however conveniently never found any reason for it. Now it's out of warranty and is still as smokey and the fuel economy has fallen thru the floor, on a trip to Bowen last weekend towing our camper trailer we used 81.32 litres for 407 km of flat highway driving struggling to hold 100km/h into the southerly wind. Thats 19.98 litres per hundred, with not a very heavy load. I have a safari snorkel and K&N filter, 33 inch tyres and an aluminium roof rack.I'm wanting to know who in Townsville is worth talking to re; injector pump timing, exhaust etc. I'm happy with all other aspects of the 1HZ except the highway crap, I'll go for a turbo if need be, however I'd like to explore other paths first. Any advice would be appreciated.
Thanks.

[RODEONICK]

a decent exhaust system does wonders for any diesel whether turbo or not. A good diesel shop tune up should do miricles too. Another thing that i have heard is that the K&N filters are too restrictive. It does sound by your symptoms that the filter would bethe first thing to check. Goodluck and keep us posted.
Cheers Nick.

[zordo]

mate that is thirsty. I have a pov pack 100 series with a DTS turbo wound up & towing a camper trailer fully loaded & in a hurry to get where i was going & i still got 17l per 100klm.
If you are blowing black smoke it is overfueling.
Get a 2.5" or 3" exhaust & then a tune up to get the pump adjusted.
cheers

[HDJ105]

Find your local Denso fuel injection specialist and go and have a chat. Injectors and recalibration of pump will be a minimum IMO.

[dakar61]

Find your local Denso fuel injection specialist and go and have a chat. Injectors and recalibration of pump will be a minimum IMO.

Ditto.

Get them to check that the EGR system is working correctly also. (2003- should be an EGR engine, from memory)

Any faults here can give the same symptons.

[The Walrus]

I've spoken to an injector and pump mob in town and have the cruiser booked in for injectors and also to check the EGR valve etc next week, I'll then do extractors and a 3" system and a dyno and see where we go from there, if it's not good enough then there will be a set of extractors going cheap soon to make way for the turbo. Thanks for the advice so far.
Another question, if the EGR valve or sender are faulty, can I remove them from the vehicle if the turbo is fitted or not, I know there will be emmissions problems, but can the engine function well without this in place?

[HDJ105]

Another question, if the EGR valve or sender are faulty, can I remove them from the vehicle if the turbo is fitted or not, I know there will be emmissions problems, but can the engine function well without this in place?

Well removing the EGR valve would be illegal, but if it happened to be in place but faulty, then who were you to know ;-)

1HZ's functioned well from 1990 - 2003 without EGR. :thumb:

[The Walrus]

Well it wasn't a hard decision, I've decided to turbo the 100, only problem now is deciding between the ARB installed Safari set-up and the MTQ Engine Systems DTS turbo. There don't seem to be many other options in Townsville that I can find, but one of these two should be fine. Any thoughts on these two items would be appreciated, they are similar in price, so just getting the best one for a towing application would be good. Also ARB have a 2 wheel dyno and will use this to tune the vehicle, whereas MTQ will test run and tune the vehicle on the road. Back up service for both is a query for me too, ARB are big and everywhere, and MTQ claim to have 100 or so dealers, has anyone had any dealings with these companies regarding turbos. Thanks Fellas.

[DX80]

I have delt with MTQ they are very good to deal with, good after sales service, they also just do turbos. ARB do everything

[4 play]

Have the same vehicle and had the same problem, well sort of.When we bought it(still under warranty) it used to turn the tail gate black but wouldnt blow much visable smoke.It went back to Toyota twice and they had something done to the pump but came back the same, next time they said nothing wrong.A few months later I was informed by another dealer(differant state) that the pump and injectors were stuffed.5 grand later new injectors and pump (long story) and it still made the tail gate black.I blocked the EGR, had the timing checked, cut the fuel pump back but still slight stain on the tailgate.In the end I made up an angled tip for the end of the exhaust to point the gasses down and problem fixed.
Fuel economy was always around 13-14.5kpl.
Also fitted a DTS turbo to my 4 Runner, no dramas there either.

[HDJ105]

Well it wasn't a hard decision, I've decided to turbo the 100, only problem now is deciding between the ARB installed Safari set-up and the MTQ Engine Systems DTS turbo. There don't seem to be many other options in Townsville that I can find, but one of these two should be fine. Any thoughts on these two items would be appreciated, they are similar in price, so just getting the best one for a towing application would be good. Also ARB have a 2 wheel dyno and will use this to tune the vehicle, whereas MTQ will test run and tune the vehicle on the road. Back up service for both is a query for me too, ARB are big and everywhere, and MTQ claim to have 100 or so dealers, has anyone had any dealings with these companies regarding turbos. Thanks Fellas.

Hopefully you're not fitting the turbo to "fix" the smoke and thirst issues??

The intercooled Safari kit like I have is the Rolls Royce kit, however it will be the most expensive and requires your a/c be evacuated and regassed, so extra $.

Towing won't control the brand of kit, just make sure whoever's tuning it knows you want to tow.

[The Walrus]

Hopefully you're not fitting the turbo to "fix" the smoke and thirst issues??

The intercooled Safari kit like I have is the Rolls Royce kit, however it will be the most expensive and requires your a/c be evacuated and regassed, so extra $.

Towing won't control the brand of kit, just make sure whoever's tuning it knows you want to tow.

Thanks HDJ105, no I'm not adding the turbo to fix the smoke problem, I had the injectors done today and apparently the springs that control the injector were about 20% from where they should be, and the injectors had plenty of build up on them. New injectors fitted and springs reset, so hopefully the fellas fitting the turbo will have the engine as it should be to work with. I don't expect to use less fuel than I was, (although I imagine it will be marginally better, as it was pretty ordinary), but atleast we'll get some performance for our dollar, have been planning this since we bought the car, but decided to leave it until the warranty had expired, incase of any gearbox/transfer/diff problems. We have discussed the fact that we are using the vehicle for towing with MTQ and they recommended the intercooler aswell, which I understand and agree with, however that will have to be fitted later, due to the ever present financial considerations that family life throws at you. Thanks for the advice so far.

[The Walrus]

G'day,
We have gone through 2 tanks of juice since the injectors were done, and I also cleaned the K&N filter, we are straight away getting 14.5L per hundred and this is with about 50/50 highway/city driving. This is what we were getting when the vehicle was new and had standard rubber. Definetly more pick up around 80 to 100k's, not much, but it is noticeble. So for $505 spent on the injectors and springs, I'm pretty happy and it seems to be back to normal for the turbo which goes on two weeks. I'm getting the car dyno'd before and after, so I'll post the figures FYI. EGR valve has been disconnected and 'what do ya know' the cruiser runs as good as new.
Cheers.
Tom

[MCL77]

G,day Walrus,
I have just seen your thread on your thirsty hungy, if you are getting 14.5l/100k now your MTQ turbo will have you pretty happy, I have pretty much the same set up as you are about to go to but I don't have mine intercooled yet either. I just completed a 4000k trip around queensland in mine and averaged 13L/100 (not towing but loaded to the hilt. wife and two kids style) I can get it down to around 12l/100 with cruise control on taking it easy.

You will notice a massive improvement in driveability and towing ability, I loaded my camper on at easter and went to running river near hidden valley via harveys range, which would be about 400-450k return trip and mostly uphill one way with a lot of playing in the sand for four days and I only used about 80L of fuel on that trip.

At my work one of our 100 series wagons has the safari turbo fitted by ARB and unless you are an efficienado of turbo I doubt you would see the difference, although it took some convincing for them to wind the turbo up a bit to give a bit extra.

I am in Townsville so if you want to have a look at my hungy to get an idea of what you are going to be paying for PM me to arrange.

Cheers
Mick

[The Walrus]

G'day,
Well we had the DTS turbo fitted by MTQ to the 100 series about 2 months ago and it has made an enormous difference to the vehicle. The pick up especially the top of 3rd and 4th gears is excellent, and the additional torque makes it a different vehicle. We went with the 21/2 inch mandrell bent exhaust that MTQ supply, and it has proved a good choice, as the performance is more than good enough, and the vehicle is no louder than before the installation.
Fuel usage is about the same as before the turbo, however at least we now have some power for our money, also I think as the novelty of the extra performance and the whistle thru the snorkel wears off, I may find that the mileage improves, at present we are using 14.5 to 16 litres per hundred, depending on what we tow etc. All in all it has been money very well spent. All up we spent $4300 including exhaust and turbo timer.
I tow a trailer that weighs about 2200kg, and I can't see myself needing the intercooler from a power/torque point, only if heating up became an issue would I consider the extra couple of grand$$
The rear door/window of the cruiser doesn't get covered in black shit anymore either, which is good, however I think that the injectors and the exhaust were probably responsible for that.
If you're thinking about fitting one of these units to a 1HZ, then stop thinking about it and do it!
Cheers,
Tom

[tuffnup79]

have had heaps of 100 series with this problem and usually a faulty TPS (throttle position sensor)