Original was 275/70/16, which gives 10.9% and that aligns with what two GPS units told me
Under 8 MPG (9 Viewers)
- Thread starter jjdeneen918
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jjdeneen918
SILVER Star
- Thread starter
- #22
I do have a wide band sensor installed. Air/fuel measurements are very consistent at about 14.7. They fluctuate a bit upon acceleration & coasting very breifly, but always return back to 14.7-15.
My tire size is 35x11.5x17. Actual diameter was 34.5 when new I believe.
My tire size is 35x11.5x17. Actual diameter was 34.5 when new I believe.
jjdeneen918
SILVER Star
- Thread starter
- #23
So every so often. Not consistent at all, but my speedometer stops working. But only very briefly.
Today, on the freeway, to work, the odometer goes to zero. For about a mile or so maybe, then it works again.
I did notice the trip odometer wasn’t working, during this time. I assume the total odometer wasn’t working either.
Is disconnecting the speedometer, also stop the odometer too?? Is it that easy to bypass the odometer from rolling too??
Seems too easy for someone to cheat the system.
Today, on the freeway, to work, the odometer goes to zero. For about a mile or so maybe, then it works again.
I did notice the trip odometer wasn’t working, during this time. I assume the total odometer wasn’t working either.
Is disconnecting the speedometer, also stop the odometer too?? Is it that easy to bypass the odometer from rolling too??
Seems too easy for someone to cheat the system.
What do you mean by that? Did you mean to say speedometer?
Edit: You meant speedometer. And your trip meter stopped advancing during that time. And you don't know whether your odometer stopped advancing as well. Correct?
thatcabledude
GOLD Star
Odo quits with the speedo.
Ok, so we need a thread title change: "How to fix busted speedo?"
thatcabledude
GOLD Star
Seems low there is an issue somewhere. I would guess O2’s.
How are your catalytic converters? There was a night and day difference on my supercharged cruiser after getting rid of my 250k originals.
jjdeneen918
SILVER Star
- Thread starter
- #30
Catalytic converters are original. They could be bad, but how to know?
I’d hate to throw parts (expensive ones to boot) just to see…
jjdeneen918
SILVER Star
Take an IR gun and get temps fore and aft of the cats. That can indicate a clog.
There’s obviously some other factors at play but…
Cough* …tune your truck …cough*
Properly turboing it may result in proper results
www.haltech.com
Cough* …tune your truck …cough*
Properly turboing it may result in proper results
HT-150647 Elite 750 + Toyota LandCruiser 80 Series Plug'n'Play Adaptor Harness Kit - Haltech
HT-150647 Elite 750 + Toyota LandCruiser 80 Series Plug’n’Play Adaptor Harness Kit.,,,,. Outputs: . Suits:MY95-97 Toyota LandCruiser 80 Series with 1FZ-FE and manual transmission only. Supports sub tank transfer system. (European delivered models please confirm your ECU pin out with Haltech...
www.haltech.com
A lot of trucks running around without being tuned not getting 8mpg. There is an issue. Throwing more parts at it isn't going to fix that problem, you will still have to fix that problem with an ECU.
Check for vacuum and boost leaks, check your O2 sensors, check your cats, etc. There is obviously something going on. If it wasn't like this from 2 years and it all of a sudden happened it obviously isn't the usual.
Check for vacuum and boost leaks, check your O2 sensors, check your cats, etc. There is obviously something going on. If it wasn't like this from 2 years and it all of a sudden happened it obviously isn't the usual.
Just a data point - N/A on 33s, 4.10s, and vintage 300kmi engine - get about 250-270mi/tank with highway driving.
About 1.1gph on the trail. - which usually equates to around 9 - 11 mpg.
Have long suspected O2s. Just haven't bothered to replace them.
This thread seems to confirm my suspicions.
Good info.
About 1.1gph on the trail. - which usually equates to around 9 - 11 mpg.
Have long suspected O2s. Just haven't bothered to replace them.
This thread seems to confirm my suspicions.
Good info.
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Like I said, there’s other factors at play. But why not do it right while you’re at it
jjdeneen918
SILVER Star
- Thread starter
- #37
Turbo was designed to run on the factory ODDII ECU vehicles.
I am running 91 octane due to forced induction.
What temps should I be seeing before/after turbo?? Just run at idle & check, freeway pull?
I am running 91 octane due to forced induction.
What temps should I be seeing before/after turbo?? Just run at idle & check, freeway pull?
So am I the only one who thinks this is a pretty silly discussion without a) adjustment for tire correction, and b) no real idea how often the odometer's not turning?
They didn’t design the turbo to run on a factory obdII vehicle. It’s just a giant turbo that spools slow so the stock ecu can keep up, which is a terrible way to turbo a vehicle.
