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I have my 94 LX and, I have to run hight test in order to prevent knocking.
Is there a device that I can buy to adjust this? I want to advance and retard the timing to see what is the best combo. Also to get the most HP if I can.
 

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I don´t know if the 94 LX is the same as my 1995 LX. My car pings in warm weather; your weather would certainly be warm. I alternate gas fillups with high/low octane in warm weather. In my car, you can´t adjust the timing. It is controlled by the computer. Some people suggested changing the temperature range of the sparkplug to reduce the problem, but I havn´t tried that yet.
 

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btw I have a 95 LX and it pings like mad sometimes, especially up hills, heavy load, full throttle, warm weather. So you´re not alone. I do plan on putting in msd in over the summer, though.

Chances are, making it fire a little later, or advancing the cams will solve the problem. I don´t know for sure, but I´m trying to help.
 

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Hey on my 91 LX I can only do the low RPM test (which occurs after the fan on the radiator turns on low and then high, and shuts off) then it gives me an error code that my idle speed is not set right to do the high rpm test, what should I do to fix this? I have no tachometer, so its gonna be difficult I think.
 

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timing on an 89 is different, you have to put it to -10 degrees tdc......i think, that´s what it is, correct me if i´m wrong, get your self a timing light, and a trusted friend.....should take maybe 10-20 minutes, depending how much you 2 b/s with one another....

to adjus the timing.....put timing light on, and put the spark plug adapter...on the far left spark plug wire......which is cylinder one.........start car up, and let it idle.........the light should be flashing very quickly.....

point it down where the belts are, there should be a cover over the timing belt, it will show/tell you where the mark on the pulley should be.....once you figure it out........go to the distributor...loosen the two bolts, and adjust it accordingly
 

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urm... what is shiznit talking about with the high/low RPM test? Could somebody post or PM me about this? I´m confused.
 

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Ah, I was talking about when you do the ECC test or whatever and you jump the signal return pin and the self test input and then turn the car all the way on and leave it in park, it turns the fan on the radiator on low, then high, then the fan turns off. Then the car automatically accelerates the engine speed (dunno how) and (dunno how fast) but it´s relatively low speed. Then it gives me an error code (from the check engine light) telling me the idle speed is not configured correctly during the low RPM test so the High RPM test doesn´t happen. I have that Hanes manual for it and it tells me the code that it gives out as : Code 13 RPM out of specified range during self test low RPM check.
Thats what I wanna know how to fix. I think it has something to do with that screw on the throttle body.

The Instructions are like this:

Start the engine. The first part of this test makes sure the system can advance the timing. Check the ignition timing. It should be advanced about 20-degrees above base timing (check the VECI label for the base timing specification). Shut off the engine, restart it and run it for two minutes, then turn it off for ten seconds before restarting it. The check engine lamp should flash three times, then show and engine code. After another pause will be one flash/sweep, the signal to blip the throttle so the system can check throttle component operation. After this there will be a pause, followed by the Engine Running codes which will appear in the same manner as before, repeating twice.

So, Im just wondering is all.

Sorry for the "Essay Length" reply, but it had to be done to convey the idea.
 
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