Question about 1996 Toyota Land Cruiser

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2.7 PETROL HILUX IDLES ROUGH AT 700RPM WITH RICH SMELL I HAVE DONE NEW SPARKIES,OIL/FILTER,LEADS,FUEL/FILTER/PUMP,CLEANED AIRFLOW MTR,CLEANED THROTTLE BODY CHECKED FOR VACUM LEAKS, DOESNT HAVE 02 SENSORS STARTING TO DRIVE ME CRAZY IF ANY ONE CAN HELP WOULD BE MUCH APPRECIATED THANKS

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  • 138 Answers

Computer Box, Try to reset all the connector maybe the it may have lost contact. Misplace high tension wires check the arrangement
1, 4 , 3, 2 net time before pulling the high tension better make a marker.

Posted on Oct 18, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: toyota previa petrol smell

I had similar problem some months ago it turned out to be the pipe under wheel arch (corroded) where cap filler is.
my problem was solved by replacing pipe which is connected to rubber pipe fixed to tank and filler hose from filler cap.
tools neede llong large cross head screwdriver, small socket set ( 12 mm , 13mm , 14mm) 150 mm extension bar. to remove bracket bolts
possibly some new pipe clips as others may be corroded.
you will need to jack up car and remove wheel to gain access.
took me about 1 hr, somebody with competent DIY skills should be able to deal in couple of hrs
check with dealer as there are two different pipes on different models one is longer.
my one was the one with the piggybacked overflow pipe.
small hands are advantage
Ian

Posted on Oct 21, 2008

  • 314 Answers

SOURCE: Loping and high idle

You are really onto it! Either the TPS or the cable from the peddle. Do check the cable first. Frankster016

Posted on Oct 26, 2008

michigan man
  • 3533 Answers

SOURCE: engine idles rough, misses at 2500-3000 rpm's

i would first check the timing and if that does not fit i would take the cover back off and look at the belt for a bad or missing tooth

Posted on Feb 14, 2009

mackinbeats
  • 46 Answers

SOURCE: engine cutting out

FUEL PUMP

Posted on Apr 15, 2009

  • 1374 Answers

SOURCE: misfire/boggin down/shaking

If you cleaned the mass air flow sensor (MAF) and your still getiing the problem. You may have to replace it. But before you go there. Strat the car and listen for a lond hissing sound by the throttle body area. If you hear it you have find it .You can hunt down a vacuum leak with a propane tester and watch a tach gauge for for increase RPM's when leak is detected.
Ignition system checks are a little tricky and time consuming. Its easier to use a scopemeter and look for the bad cylinder.
What I believe is you need a new MAF its presenting a rich condition
condition and its being reported as a bad air /fuel ratio.
A rich condition could lead to misfiring.
use the shop manual to conduct the electrical tests needed on the MAF.
If it fail any of them reolace it . Good luck and keep me posted

Posted on Mar 13, 2010

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2 Answers

Idle's rough and retards when running at a constant speed and is thirsty.


Check air filter and then give throttle body a good clean with carb cleaner. If that fails I would give the MAF mass airflow sensor a clean with MAF cleaner.

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1 Answer

Loss of power when hot


Have you tried to change the fuel filter. This may be due for a change, or have some contaminant slowing the fuel down.
Also have you tried a fuel additive to clean the fuel system.
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1 Answer

1990 Jeep Wrangler 2.5l idles rough/ black smoke/ fuel odor


You could pay a garage to diagnose the problem cheaper than throwing more parts at it.
The problems may be connected or they may be different issues.
Yes I would change the oil and filter, but first I would make sure the fuel system is not dumping too much fuel into the cylinders.
The O2 sensor helps the computer decide on how much fuel the engine needs, along with the other sensors. And you said you have already replaced the O2 sensor.
A mechanic would take a scanner and "read" the sensors and look for something out of normal range.
The fuel pump and fuel filter are off the list as far as causing a rich mixture goes.
I would start with the rich mixture and then see if fixing that issue takes care of the no start when hot issue.
Change the oil and filter first, and see if the injector is on too much.
You can watch the spray and tell - at idle it should be very light.
Also look at the engine temp - is it warming up to normal 195 degrees? Can you tell if the fuel pressure regulator is blown and pouring fuel into the throttle body ?
Without a scanner its going to be more difficult, but not impossible to diagnose.
Let me know what you find out.

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1 Answer

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Sometimes a rough idle like that is a fuel filter. As you've already done the plugs and wires the fuel filter would be my next bet.

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