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Discussion Starter #1
Hello all, well...I finally got my beloved out of the shop saturday, they had had her since like, August, they were able to pinpoint down a lot of things going on with my car, replaced a leaky injector, replaced my thermotime switch, and put a different afm in. My only problem now is I have to get a new computer, and I believe I have to replace my catalytic converter, I dont know what else could be making my car run so poorly after several minutes of strong driving...it's like when the cat is cold, there is no problem, but it quickly heats up, and becomes restrictive, I have let the car idle for a while with temp, oil pressure, voltage all normal, shut off the car, and smoke comes up from the back and underneath of the engine, I dont know what else it could be...any help would be appreciated...:)
 

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> Hello all, well...I finally got my beloved
> out of the shop saturday, they had had her
> since like, August, they were able to
> pinpoint down a lot of things going on with
> my car, replaced a leaky injector, replaced
> my thermotime switch, and put a different
> afm in. My only problem now is I have to get
> a new computer, and I believe I have to
> replace my catalytic converter, I dont know
> what else could be making my car run so
> poorly after several minutes of strong
> driving...it's like when the cat is cold,
> there is no problem, but it quickly heats
> up, and becomes restrictive, I have let the
> car idle for a while with temp, oil
> pressure, voltage all normal, shut off the
> car, and smoke comes up from the back and
> underneath of the engine, I dont know what
> else it could be...any help would be
> appreciated...:)

Why do you think you have to replace the computer? It sounds like the shop is having you replace parts without knowing what's wrong. I went through $800 the hard way like this in my '76 280 with a [email protected]#% mechanic (new computer, AFM, injectors, etc.) before switching to a mechanic who knows what he is doing. The new mechanic fixed that problem for $40. Turns out the idiot who I had install my MSD ignition installed it wrong and fried it. It still worked -- sometimes -- but was quirky and unreliable. All the good mech had to do was disconnect it and re-hook up the stock ignition system.

But I am not good with electrical problems and couldn't figure that out. Oh well, my fuel system is brand new except for the ignition module.
 

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202 Posts
> Hello all, well...I finally got my beloved
> out of the shop saturday, they had had her
> since like, August, they were able to
> pinpoint down a lot of things going on with
> my car, replaced a leaky injector, replaced
> my thermotime switch, and put a different
> afm in. My only problem now is I have to get
> a new computer, and I believe I have to
> replace my catalytic converter, I dont know
> what else could be making my car run so
> poorly after several minutes of strong
> driving...it's like when the cat is cold,
> there is no problem, but it quickly heats
> up, and becomes restrictive, I have let the
> car idle for a while with temp, oil
> pressure, voltage all normal, shut off the
> car, and smoke comes up from the back and
> underneath of the engine, I dont know what
> else it could be...any help would be
> appreciated...:)

your cat could be glogged with oil, causing smoke and poor performance... just a guess... I read it posted in this forum once before.
 

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Discussion Starter #4
> Why do you think you have to replace the
> computer? It sounds like the shop is having
> you replace parts without knowing what's
> wrong. I went through $800 the hard way like
> this in my '76 280 with a [email protected]#% mechanic
> (new computer, AFM, injectors, etc.) before
> switching to a mechanic who knows what he is
> doing. The new mechanic fixed that problem
> for $40. Turns out the idiot who I had
> install my MSD ignition installed it wrong
> and fried it. It still worked -- sometimes
> -- but was quirky and unreliable. All the
> good mech had to do was disconnect it and
> re-hook up the stock ignition system.

> But I am not good with electrical problems
> and couldn't figure that out. Oh well, my
> fuel system is brand new except for the
> ignition module.
No, I am positive that it's the wrong computer, a long long time ago, I fried my car, took it to an idiot mech, he put in any old computer, not the right one, course I didn't know this at the time, I told all this to the last guys that I went with, so they checked it out, put in a different ecu, and it did make the car run a little different and better, so they told me to go to the dealership down the road, and check out what the part number for the computer in my car is supposed to be, neither ecu matched...thanx for the concern though!
 
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