Bogging

[mercenarygod]

Hey guys, I don't really expect my questiong to be answered. But I would like some ideas for what to look into, to solve my issue.

When I reach the speeds of 30 and 35 my engine will feel like it decreased in power, then my rps will increase and I get a jolt of acceleration. Now this jolt isn't crazy, but it's as if I stepped down on the peddle. This does not happen everytime I'm driving, that's why I haven't taken it in. Any ideas would be really helpful! Thanks.

[jro909]

need more info, engine...trans...miles...any warning lights on? any maintance done?

[mercenarygod]

4.3L, automatic transmission T4L60E4396T2, 155K miles, no warning lights. The latest matience I did at this mile mark was, flushed coolent, cleaned egr and throttle body. Everthing seems to be running good, I'm really dumbfounded on what could be causing this. Thanks for the reply man!

need more info, engine...trans...miles...any warning lights on? any maintance done?

[jro909]

have you changed the wires,plugs,dizzy? or fuel filter?

[mercenarygod]

The fuel filter is about 5 months old and in 2010 I had my wires, plugs and rotor changed. Hmmm...What's a dizzy?

have you changed the wires,plugs,dizzy? or fuel filter?

[txab]

distributor

[mercenarygod]

I got a new rotor but not cap, idk if the cap needs to be changed or not.

[mercenarygod]

So I have a two theory's. Sense I already cleaned the EGR valve I don't think that's the problem, plus the chance of that going bad is pretty low. Could it possibly be the throttle position sensor? In that situation I'm sure my light would come on. Second idea is supposedly there are weights under the rotor and if they're sticking the timing will be slow to advance. Is it easy to take the cap and rotor off?