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#1
08-15-2003, 11:36 AM
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stumble/hesitation
I have a '99 Silverado extended cab with a 4.8 liter engine. At times it stumbles and hesitates. This morning I had to tap the gas pedal to get it to start and then it seemed to surge untill it got running on it's own. This problems started about a month ago and right before it started to do this I put in a new K&N air filter, changed the plugs (autolite platinums), changed oil/filter and changed the fuel filter. I have spoke with some colleauges and they said that the oil on the K&N filter may have messed up my mass airflow sensor? The service soon engine light has never came on so I myself doubt this. Also had a friend say that the fuel pressure regulator might be going out too? The truck has about 67K miles on it. I am leaning towards the fuel pressure regulator as the cause, what do you think?
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#2
08-15-2003, 12:41 PM
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Re: stumble/hesitation
Sounds like it, Pull the vacuum hose off of the regulator and see if there is gas coming out of it. If so it needs a new regulator, I replaced bunches of them.
__________________
8 years with General Motors.
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