Steve W. turned on the Etch-A-Sketch and wrote:
> PerfectReign wrote:
>> jman2008 turned on the Etch-A-Sketch and wrote:
>>
>>> I have a 1994 Chevy S10 Blazer with a V6 vortec engine. The problems
>>> I have are very little acceleration, a "service engine" light that
>>> comes on when I reach and exceede 50 MPH and stays on until I
>>> decellerate below 45 MPH. Also I’m having trouble reaching 55 MPH.
>>> When I try to push the gas peddal to accelerate, it will make the car
>>> slow down and eventully make it "die." When It "dies", all the
>>> lights on the dash come on, the power steering goes, and the breaks
>>> are very hard to push, and it will just stall out. Sometimes it
>>> starts right back up, but other times it takes about 5 mins to restart
>>> the car.
>>> I’ve taken it to 3 mechanics, and they told me to change the spark
>>> plugs (I did-didnt work), change the fuel filter (did, still didnt
>>> work) and to get an oil change and air filter change (did, and STILL
>>> didn’t work).
>>>
>>> Does anyone know what the problem might be and how I could fix it?
>>>
>>
>>
>> A '94 should have the TBI engine. (That's a good thing.)
>>
>> I believe the things to check are your throttle body (and I believe
>> there's
>> a sensor), your EGR valve (I think you have one) and your MAF sensor.
>> Also
>> check that your catlityc converter isn't plugged. I'm not sure if you
>> have them, but you might want to check into oxygen sensors. There
should
>> be two.
>>
>
> '94 had the Vortec with CPI. Leaking fuel nuts and sticky poppet nozzles
> abound in them.
> It could be that the pressure regulator failed and is dumping enough
> extra fuel that the cat. destroyed itself trying to burn it all off.
>
> I've still got my '94 in the yard. Slowly stripping off the good parts
> and selling them.
>
Okay, if the OP has the CPI engine, then there are a whole group of things
to look for. Check this NG for earlier questions....
OP - here's what you need to look for...
1. CPI spider unit with clogged injectors.
2. EGR valve stuck/clogged
3. O2 Sensors clogged
4. CAT clogged
....also turn the truck on and check the tailpipe. Do you smell gas? If
so,
there's fuel leaking out into the cylinders and not combusting. Also is
there black carbon all over your tailpipes? Again, that's a sign the FI
system is FUBAR.
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