Question about 1998 Toyota 4Runner

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1998 4runner,cel on/off and still chugs after plugs,wires,coils,maf cleaning etc. what to check next

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Injectors and crankshaft position sensor

Posted on Jul 30, 2009

  • lilwayne_2 Aug 02, 2009

    the injectors have to be at 14.8 ohms to be good there is a lil bit of tolerance there check that

  • lilwayne_2 Aug 04, 2009

    witch one was it just curious



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2008 ford expedition, its chugging at all different speeds even idles funny some times. It happens very sporadically, its very slight but noticeable.

Replace/check plugs wires and coils. Helps to use a spark plug tester to isolate a misfire. Next check/clean/ and replace maf sensor, idle control valve, and egr tube/valve.

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So I have an 2002 mazda protege and not long after putting in a new stereo and cleaning the car and the engine My car started shaking and having a hard time accelerating I did a diagnostic test on it cause...

Check the spark plug for Cylinder #3. Check the boot and wire around that plug and back to the distributor/coil. Likely have water (from washing your engine) arcing and shorting that cylinder & causing misfire. Wait for a long time for everything to dry, should clear itself. Also, hope you used MAF sensor cleaner to clean the MAF sensor. If you used something else, you might have ruined the sensor - it is very delicate.

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Could be low fuel pressure. Is the check engine light on ?

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What are the MAF sensor computer setting on 1999 cabrio

You might need to simply disconnect the battery for 10 mins and do the usual like set the clock etc afterwards but although the ecu will have stored the code it should start from scratch, first doing a TBA (throttle body alignment) - lots of whirring and clicking, when thats stopped (ign on after reconnecting battery, dont start engine just ign on) the engine will be ready to start and hopefully since all is well the CEL(check engine light) should not come on. At worst, see if someone local has vag com or a hand-held OBD device that can reset the CEL and if it just comes back on, the fault is solid.

Did you mean you connected the original maf back up or a new one? If its the original and the light only appeared after disconnecting it, then the ecu mustnt have realised it was faulty, and only noticed when you pulled the plug, a reset should clear it no problem, but has you original fault returned after putting the maf back on or has it now gone away? Might have been a bad/dirty connection now made good, or if youve cleaned it, and its working fine, the CEL will be a dummy from the time it was removed so reset & your good to go!
many a times while replacing the maf the wires beside the sensor gets disconnected or loose and this makes the check out the wirings. This will help. Thanks please keep updated. please do rate the solution positively .thank you for using fixya

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