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Acceleration Problem

 
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Old 07-11-2014, 10:04 AM
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Acceleration Problem

There's a flat spot in my acceleration from around 2800 to 3100 RPM in every gear. After 3100 RPM, it kicks back in. This problem happens intermittently. I figured it was a fuel problem so I changed the fuel filter and checked the fuel pressure to make sure it wasn't the fuel regulator, which was within spec. What else should I check out?? Thanks for your help.

Last edited by dauderm1; 07-11-2014 at 01:13 PM.
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Old 07-11-2014, 07:20 PM
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Re: Acceleration Problem

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Originally Posted by TypeT View Post

usually these things fix bad idle or/and hesitations:

- new spark plugs & wires
- new distributor cap & rotor
- new air/fuel filters
- clean injectors/iacv/egr/fitv
- bleed the coolant
- new pcv
- adjust valves and ignition
- adjust idle from tb's screw and throttle cable
- check does sensors work properly: map, iat and tps (and try calibrating tps)
- then check wires, connectors and hoses

check o2 sensors and vacuum/exhaust leaks (check all the seals - IM/header/TB gaskets, injector seals, maybe even buy valve cover gasket set...)
check timing. after that: double check timing

clogged cat might you give some trouble as well (usually when driving) - check cats condition

those are basic maintenance as well.
Something to consider
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Old 07-12-2014, 04:33 PM
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Re: Acceleration Problem

Thanks for your reply. I wish I would have found this thread before posting, So your 'lude hesitates/bogs you say?, its most likely the upstream O2 sensor.
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Old 07-12-2014, 07:57 PM
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Re: Acceleration Problem

Idle problem thread
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