Question about 1997 Toyota RAV4

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The first starting for the day, my RAV4 will stutter and most times cut off. Starting after that, it would start and run smooth. Also the engine kind of momentarily lags when i accelerate. Changed air and fuel filter, plug. Don't know what to do! I'm thinking my catalytic converter is blocked up.

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  • Toyota Master
  • 53,768 Answers

Unlikely as faulty cat converters will cause problems under load and at rpm
check for fuel pressure problems and faulty u regulator not holding pressure over night

Posted on Jan 27, 2018

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

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Posted on Jan 02, 2017

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Toyota Ed

  • 1861 Answers

SOURCE: 99 tacoma

Still need the codes.
Injectors can go "bad" in a couple of different ways; all they are is an electromagneticaly controlled nozzle. When the ECU "fires" the injector, it pulses a ground circuit for 4-8 milliseconds, the electromagnet powers up, the valve at the bottom of the injector opens, and the fuel shoots out, under pressure. The wire can be bad/chafed/corodded/ The electromagnet may be weak. The nozzle may be stuck. Lots of things. But, to put in an injector for a number 4 cylinder misfire (p-0304 code) would be one of the last things that I would do.

Posted on Nov 21, 2008

ourhowse

Dar

  • 2007 Answers

SOURCE: 1991 toyota 4runner v6 auto rough start

Possibly a leaking head gasket. Water/antifreeze seeps into the cyllinder when it cools off, and then it won't fire properly until the coolant is blown out the exhaust when you start it. Let it warm up with the rad cap off. If you see bubbles continuously coming up to the filler hole, you have a head gasket problem. Do you have to add coolant monthly, or weekly?
If you're lucky, it could be just a spark plug that doesn't want to do anything until it warms up, or it could be a valve.

Posted on Apr 29, 2009

pippall

Philip Long

  • 1486 Answers

SOURCE: 1999 Tacoma 4x4 Trouble starting once engine is warm

Change the air temp censer.

Posted on May 31, 2009

naelec

  • 1 Answer

SOURCE: I have Toyota Landcruiser Prado

porous fuel tubing after the diesel tank

Posted on Jul 18, 2010

graham603

  • 1 Answer

SOURCE: toyota rav4 2.0 d4d, hesitates on acceleration

Look at this thread -seems to be a cure for this problem.

http://www.toyotaownersclub.com/forums/index.php?showtopic=87986

Posted on Sep 03, 2010

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