Question about 1992 Toyota Corolla

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Toyota 4AGE doesn't rev out

My Toyota 4AGE 20V silvertop makes max power at about 6000 RPM, spec sheet says max power should be at the redline 7500 RPM. Is this to be expected as an engine gets older?

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When short TE1 to E1 the check light goes off, i puzzled. any one can help?

Posted on Mar 09, 2010

  • lmr052 Jul 03, 2011

    Leaking electrolytic capacitors in the ECU can cause all sorts of strange issues. I suggest you get them changed by an electronics repairer

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They dont get older if you drive them at 7500revs. an electronic tune up will solve the problem,but why to you want to kill it?

Posted on Sep 13, 2009

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Will toyota 20v manifold fits on 16v


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What is the torque spec's on a acura integra gs 90 motor ?


1990-1991 OBD0*
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1 Answer

Automatic transmission


Transmission will never hold the engine back if it is going through the gears properly.If it gets into high gear, eventually the engine will reach "redline" if you stay into it long enough. ("redline" for any engine is the point at which it cannot run any faster without harming itself.) DO NOT confuse that with proper shift points which should happen just before you reach max torque which happens way before you reach "redline" at which point you are way past the torque peak of the engine, and making no usable torque or horsepower. An example of this is a race engine with a max rpm limit of 10,000rpm.("redline") Depending upon the torque curve (determined by compression, stroke and type of cam grind) you would likely be shifting gears at about 7500 to 8500RPM not at 10,000.
Therefore, your shift points are like climbing a ladder. you get just so high and though there are more steps, you will fall off if you go there. Each time you shift, you are putting the rpms back into the usable power band, till you reach the next step, then start over again. If your trans shifts early the engine will lug and labor. shifting too late and it will quickly reach "redline" and self destruct or go "flat". In a conversion, you need to make sure that the electronics that control shift points are working within the usable torque range.
OR install a manual valve body and shifter and control it like a stick shift car, using your brain as the computer and a tach to tell you where you are.

Feb 20, 2010 | 1998 Jeep Cherokee

1 Answer

2002 Toyota Camry Engine Torque Specs 2.4 L. 16 V. 4 Cyl.


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Honda s2000, 2001 loose of power when vtec engages I get to around 6000 rpm it sputters continues to 9000 rpm.No Engine light or codes. Vtec is working . I removed the solenoid and cleaned, replaced the...


If youe engine is stock - the VTECH should kick in at 5000-5500RPM.
Your car should be Dyno set. Every vehicle is different.

The 5000-5500 is good because if you were to set it down low it would almost be like having a non-vtec motor. If you set it at 6000, and your redline is 7000 then its not going to realy do anything. Again, almost like having a non-vtec motor.

PIC1
PIC2
PIC3

The first two pics are examples of where VTEC should be set earlier to smooth out the curve - the latter is an example of where VTEC should be set later to smooth the line out. You want the least noticeable transition from the non-VTEC to the VTEC lobes on your cam. That's when you'll make the most power at every point in the rev range.

Too early and your engine stumbles while it tries to get into the efficiency range of your big lobe- Too late and you have a huge jump where you could have had more power a few hundred rpm sooner.
The first graph had the VTEC set later (4400rpm) so that I wouldn't be jumping in and out of VTEC all the time on the highway, the second is the stock S2000 (6000rpm) that Honda sets so that the customer can feel the VTEC kick in (sells cars because it's cool, but isn't the best for max power), and the third was just set too early because it wasn't a custom tune.

Hopefully that gives you a more visual explanation of why you want to set your VTEC crossover point on a dyno.

Another suggestion is to unplug the IACV (Idle Air Control Valve) and see if the bog persists.

Finally - you may have a clogged cat. Remove the plug for the Throttle body Sensor and check again for the bog.

If no bog under this condition - your cat must be gutted, removed, or replaced.

Thanks!!

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The 4AGE does not start making good power until you get to 4200 RPM when the TVIS kicks in.

"112 hp (84 kW) at 6600 rpm and 97 ft·lbf (131N·m) of torque at 4800 rpm in the American market."

Apr 10, 2009 | 1987 Toyota Corolla 2 Door

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What is the redline on my 1993 (4-speed) Toyota Tercel? (I am trying to install a tachometer)


idle 800 rpm max rev 3500 rpm any more causes the valves to burn out and the piston rings to break which is caused by worn bores and piston ring grooves.keep rpm down and this motor will last forever

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