Question about 1997 Nissan Pickup
1997 nissan bogs down at 200 rpm check engine light is on but dont know the code The truck will sit and idle all day but once put in gear and driven will bog down at 2000 rpm in all gears Was told it was the MAF sensor so I replaced it but problem still occurs I unplugged the sensor and the truck runs good but will not run above 60mph starts to bog down at 3000 rpm then
You can continue replacing parts at random or have a competent diagnosis made to identify probable causes of the problem(s).
Posted on Mar 24, 2014
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Posted on Jan 02, 2017
Crank position sensor. Sounds exactly like thats what your problem is. If your not mechanically inclined then it is not a job you want to attempt. If you are then it will be a cheap repair in terms of $ value anyway. The sensor is bolted centimeters from the crank pulley behind your timing belt not the harmonic balancer but the pulley behind that. Hope this helps you out. good luck.
Posted on Jun 28, 2012
SOURCE: Engine bogs down
Whatever your problem is, I would guess that it happened after you began to drive it. I would consider looking for a vacumn leak. Plus, it would be helpful to know how the carb change affected the problem, as it does seem like fuel.
There are inline fuel filters under neather the truck body that may cause a problem, as well.
But I still feel that based on the limited amount of information, I would look for a vacumn leak. For example, if it has power brakes, a leaking hydrobooster can leak vacumn and throw of your air/fuel ratio. Vacumn pressure at idle should be 14.2, and at a higher idle should drop to about 12 or 11 inches of vacumn.
Posted on Nov 19, 2008
It is very possible that you have an open circuit in your connector. I do agree that aftermarket parts have different resistance valves than the OEM, but in this case I think you have more of an electrical problem than a parts replacement problem. Check continuity from the MAF connector to the ECM. Make sure you clean out the air cleaner box and install a new OEM air filter. Aftermarket filters don't alway fix properly and can leave an air gap around the filter. This can allow debris to enter the engine and also contaminate your MAF.
Posted on Jul 22, 2009
the throttle body butterfly is letting too much air through so its probably stuck or dirty, they should be cleaned every service but noone ever does, if its revving beteen gears then its prob getting stuck in different places so it could probably just use a good clean out
Posted on Feb 10, 2010
SOURCE: car starts and runs but
sounds like you might have a clogged exhaust, this can happen if catalytic converter is coming apart, the pieces will lodge themselves in the muffler or downpipes and restrict exhaust, causing it to back up into engine and cause vehicle to bogg down. To test, disconnect exhaust between manifold and catalytic, it will be loud, but you can test if engine revs better, if so replace cat and check rest of exhaust for debris and empty out.
Posted on Sep 19, 2011
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