Question about Toyota Cars & Trucks
It does sound like a fuel pressure problem, or a breakdown in spark delivery. The engine can't perform under stress.
You should check for any engine trouble codes held in the ECM, and check fuel pressure at revs with a gauge (maybe a faulty fuel pump or pressure regulator), all ignition leads for cracking or breaks, spark plugs for cleanliness and correct gap, spark itself from the high tension lead, vacuum hoses and the air inlet hose for cracks and breaks, and ignition timing with a timing light.
This is one of those faults with a number of possible causes. My Camry did this and it was first thought to be faulty fuel injectors, but eventually it was found to be a faulty ECM, the computer itself.
Posted on Apr 09, 2015
Check fuel filter , air filter and fuel pressure . Timing belt next
Posted on Apr 09, 2015
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Posted on Jan 02, 2017
I had a Mazda 626 with a similar problem, the car seemed to 'shut down' with no warning, even at highway speeds, as if I just turned the ignition key to 'Off'; After trying to fix it unsuccessfully by replacing several electrical parts, the problem was found to be a defective ignition switch, it was replaced and the problem went away.
Posted on Apr 29, 2009
I have similar problems with my Jaguar when i replace or reconnect the battery. What i do ,is drive the car for a short distance, then it should be ok. I think the computer has to re learn parameters
Hope this helps
Posted on Nov 02, 2009
Tips for a great answer:
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Fuel Injection Problem And RPM suddenly increaseshttp://whatisbyme.blogspot.in/2012/07/fuel-injection-problem-and-rpm-suddenly.html
2005 Toyota Highlander: Engine runs hard RPM below 3000?http://whatisbyme.blogspot.in/2012/05/2005-toyota-highlander-engine-runs-hard.html
1987 Toyota Camry: RPM Drops going Up hills?http://whatisbyme.blogspot.in/2012/05/1987-toyota-camry-rpm-drops-going-up.html
Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500 http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html
1990 Toyota 4Runner: Engine cuts off when reaches 2000 RPM?
1999 Toyota Camry: Erratic stalling and high engine RPM at idle?
1995 Toyota LS: Misfire at idle or low RPMhttp://whatisbyme.blogspot.in/2012/04/1995-toyota-ls-misfire-at-idle-or-low.html
Lexus RX: Tapping noise under Valve Cover At Low RPM?http://technoanswers.blogspot.in/2012/04/lexus-rx-tapping-noise-under-valve.html
These will help.
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