Check the fuel pressure when under heavy load. If it falls below 45 psi replace the fuel pump.
Titan won't rev past 4500
While I'm driving so far 15mph all the way to 90 mph when I step on it it will bounce off 4500 rpm. When I'm in park and neutral I can rev it up to 6000 no problems sounds heathy and everything. I was going into the high way and I stepped on it all the way down and it hit 5000 and just bounced back to 4500 and it kept bouncing. Runs smooth down the road and everything. I just got it back from the shop I had a skip in cylinder #6 shop replaced injector and it worked fine until now. I have no check engine light shakes or vibrations normal MPG drives around town like a dream just when I floor it. Every time this thing ends up in the shop I spend 500+ bucks. 149k 4 door SV help please.
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+1Check the fuel pressure when under heavy load. If it falls below 45 psi replace the fuel pump.
Sounds like fuel delivery is a problem. What about fuel filter?
1 - 3 of 3 Posts
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