Engine bog out & wont go above 3000 rpm - Nissan Forum
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post #1 of 6 Old Feb 17th, 2007, 04:32 PM Thread Starter
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Engine bog out & wont go above 3000 rpm

My dads 1988 Nissan XE, V6, 2 wheel drive hardbody just won't go above 3000 rpm. It starts hving problems at asbout 2500 rpm. We have replaced the throttle positioning sensor and the fuel injectors in the throttle body because that is what the dealership said was the problem and nothing changed. Does anyone have any ideas befoe we go and spend a lot of money on new wires, plugs and distributor cap?
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post #2 of 6 Old Feb 17th, 2007, 05:37 PM
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When the engine does that it's because there is a problem with either the MAF sensor, the TPS or the injectors. Try cleaning the MAF sensor first...

Click here for a How-To on cleaning MAF sensors.

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post #3 of 6 Old Feb 17th, 2007, 10:18 PM
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Quote:
Originally Posted by dads_helper
My dads 1988 Nissan XE, V6, 2 wheel drive hardbody just won't go above 3000 rpm. It starts hving problems at asbout 2500 rpm. We have replaced the throttle positioning sensor and the fuel injectors in the throttle body because that is what the dealership said was the problem and nothing changed. Does anyone have any ideas befoe we go and spend a lot of money on new wires, plugs and distributor cap?
You may want to make sure the exhaust is flowing correctly at that RPM. Sometimes the old catalytic converters get clogged.


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post #4 of 6 Old Feb 18th, 2007, 12:49 AM
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Unless you have a backpressure gauge to see if the catalytic convertor is clogged. Just put you hand over the tailpipe & see if you feel a good amount of exhaust coming out.
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post #5 of 6 Old Feb 25th, 2007, 10:08 PM Thread Starter
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We cleaned and checked the MAF and it has new injectors and TPS. The exhaust comng out the tail pip is good and still at 2500 rmp the engine starts puttering and wont go above 3000 rpm. Any other suggestions?
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post #6 of 6 Old Feb 26th, 2007, 12:23 AM
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Check for ECU error codes. There's a post at the top of the Trucks forum that tells you how.

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