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Re: 93 2.3L issues
"Gerry Pierce" <gpierce123@msn.com> wrote in message
news:mawzf.59182$QW2.52773@dukeread08...
>
> "Backyard Mechanic" <pettyfog@yaywho.com> wrote in message
> news:Xns974F6D0786DDApettyfogery@207.115.17.102...
>> "Gerry Pierce" <gpierce123@msn.com> wrote:
>>
>>> Put new plugs in the day before yesterday. Got done, car ran good for
>>> about 15-20 miles. Stopped for a minute to wait on my son, when I
>>> restarted, the idle was very rough. When you step on the gas, it is
>>> very sluggish and rough, then smooths out as the rpms climb above
>>> 1500. I went back, replaced all plug wires (the ones that were in
>>> there looked original (had a date on them of 1993) and put all new
>>> plugs in again. I still get the same indications. I checked for loose
>>> vacuum lines and connections, only one was vacuum on the EGR valve. I
>>> trimmed the end, it is now tight and I can see the egr valve diaphram
>>> moving open and closed through the little openings in it. It idles in
>>> park ok (not as smooth as before) but once in drive, it is rough.
>>>
>>> Also, maybe related, maybe not. Auto tranny seems sluggish to down
>>> shift beyond the first time (step on the gas, it does down 1 gear, but
>>> WOT doesn't get any more down shifts.
>>>
>>> I am at a loss on where to go now. Car ran good up to the point that I
>>> shut it off that time. I am a little short on funds, so I would rather
>>> not take it into the dealer yet. Any ideas on what to try?
>>>
>>>
>>> Second question, what are the indications of a bad/going bad catalytic
>>> convertor?
>>>
>>
>> First get the codes read out.
>>
>> Is Check engine on?
>>
>> Second.... the age of car and symptoms point to possible bad Throttle
>> Position Sensor...that's a stab at it, of course
>>
>
> No check engine light. No smell of gas in the exhaust (re your next post).
> Will look up the TPS and see what I can find out, although I wont know
> what to do to check it out. May end up taking it in to get codes read....
> will just have to bite the bullet and pay for the diagnostic fee.
>
> Thanks for the input, I really appreciate it.
>
> Gerry
>Based upon your description of the symptoms, my guess would be you got an
>EGR problem. A car with a leaky EGR valve will idle and run like crap until
>you get around 2000 rpm and then it will smooth out. Just because you see
>the EGR diaphragm moving doesn't mean that the valve is closing all the
>way. I would pull the valve and check it out.
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