Question about 2004 Isuzu Ascender

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2004 Ascender 100,010 miles Prior to July 14th - experienced delayed acceleration in instances of rapid acceleration July 14th: At stop light. Ascender dies but starts back up with no problem. No dash lights left on. Mechanic: replaced fuel filter and cleaned carbon build up Car runs better, but August 19th: At stop sign. Ascender dies but starts back up with no problem. Again, no dash lights left on. Mechanic: Find that 2 spark plugs burned up. Replace all 6. August 22nd: Battery not about to hold charge. Resolution: Battery replaced August 31st: At stop light. Ascender dies but starts back up with no problem. "Gauge light" remains on for 3-5 seconds. Taken to dealer. Diagnostic done: no codes found in computer. Service Manager states after having and driving car for 2 days, has not experienced it dying or lack of acceleration. Thought to be ignition but not sure. States I should drive till "dying" becomes for frequent.

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  • andi_latham Sep 02, 2010

    Thank you for the quick response. I will have my mechanic trouble shoot your suggestions then get you an update.

  • andi_latham Sep 03, 2010

    Called and spoke with the mecahnic. Asked him if each of the items you suggested could be checked out to see if they might indicate to be a cause. He basically said that it;s hard to tell by a part unless it is replaced if it was the problem. I am not real sure my mechanic even want to help as he told me again that I need to keep driving it until it happens more consistanly.

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If the fuel filter and sparks are replaced-then the other possibility can be a bad injector or a bad ignition control module.Also get the fuel pressure checked in your ascender.If the fuel pressure is low then it can be possible that fuel pump is not holding charge and causing this problem.As you have replaced the fuel filter,but not the fuel pump.Get the fuel pressure checked,this will confirm the problem with fuel pump is there or its any other problem.If all that checked ok then get the alternator belt checked.If the belt is loose or worn out it can be the problem.If the alternator connections and alternator belt both checked out ok then the other possibility can be weak crankshaft sensor.Not faulty but weak crankshaft sensor.In this case the sensor needs to be removed then cleaned and reconnected and checked. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation



Posted on Sep 02, 2010

  • raj somaiya
    raj somaiya Sep 02, 2010

    Keep updated with the results.Thanks.

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