An engine shutter when accelerating.

[chromebumpers]

I have a 2004 Savana van with a 5.3 V8. It has 85,000 miles and everything is original except oil, filters ( air filter too).
I have been experiencing a "shuttering" when accelerating about 30 to 55 mph. When this shuttering happens I back off the gas and try to ease my way up to speed. This may take 3 or 4 times backing off. My first guess is dirty fuel injectors - any Ideas where to start?

Rich

 

[grumpyvette]

Id pull trouble codes first but it sounds like the crank sensors going out to me!
they are fairly cheap and easy to replace
The crank position sensor (for the Chevy Tahoe/Suburban/GMC Yukon/Full size trucks) is located near the back of the engine block, on the passenger side. Near but slightly above the starter.



Cylinder Misfires

One primary symptom of your crank sensor being faulty is that your engine may misfire. If that occurs, it means that the sensor is not translating the piston position to the computer properly.

Hesitation

In some cases, a car may hesitate, or pause, before accelerating. If this happens, the crank sensor is not giving the information to the computer fast enough. The crank sensor tells the computer where the cylinders are so that the appropriate cylinder will be fired when the person driving presses the accelerator.


Read more: Symptoms of a Faulty Crank Sensor | eHow.com http://www.ehow.com/list_7448074_sympto ... z2E85ZkaOY


http://www.rockauto.com/catalog/raframecatalog.php

http://www.redlinemotive.com/replacemen ... sensor.asp

 

[chromebumpers]

Thanks Paul. I really need an OBDII reader, but I still don't a clear idea which one is currently the best value. On TruckU they used the AutoEngineuity system and it looked really good, but it's too expensive. There must be something else. Product descriptions can be just as confusing.