1999 XJ8 - slow speed stalling

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03-06-2007, 04:51 PM

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1999 XJ8 - slow speed stalling

Another question about my 1999 XJ8: I have had intermittent but annoying problems with stalling at speedsbelow 10 MPH - backing up, driving in parking lots, turning into parking spaces, etc. There seems to be no pattern as to when this happens (engine cold, engine warm, outside temperature, etc.). I will be driving along and all theindicator lights will come on with an "engine stalled" warning on the message panel. The car immediately starts afterward. I just had the spark plugs, the fuel and air filters replaced and a fuel injection cleaning, and the problem is still there. Any ideas as to what is going on or how to fix it?

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03-29-2007, 08:58 PM

Envy337

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RE: 1999 XJ8 - slow speed stalling

Check the throttle body for build up around the throttle plate, clean it. Disconnect battery for a few minutes then let it idle till it
warms up.

Could also be a bad MAF sensor.

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03-31-2018, 08:25 AM

Takeo

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I had the same problem until finding out that my gearbox was at fault, just added some oil and problem was gone.

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03-31-2018, 11:04 AM

JagV8

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An air leak is worth checking for. Easy with OBD.

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03-31-2018, 03:54 PM

avern1

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I agree that an air leak is a likely problem. You may also have a stretched throttle cable. Examine the throttle cable and with your finger try to lift it up. If it moves at all then the cable needs to be adjusted, it should be taut. You clip the zip tie that is holding the plastic block in place then remove it and rotate it to remove the slack. Then reinstall with a new zip tie.
You also need to get the fuel trims read at idle and at 2500 rpm while sitting in park and post the results. The fuel trims would identify an air leak.

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