When you say check it, do you mean look for the arcing ?

Well today I drove 25 miles on a highway ( LIE) to go change caps/rotors. Got caught in traffic for the last 10 miles so engine got to around 98 C (I Use K6JRF a/c diagnostics to display engine temp in a/c window) and it missfired pretty hard 2-3 X. Actually sounded like a backfire .

Got to the mechanic who swore without seeing car that it was caps and rotors that were the problem. He changed them and said the old ones were bad. I took them with me to look at . Dont ask me what I am looking for , but you can tell me what to look for ,and he said they were bad.

Drove the car all around long island for 30 minutes and it hesitated a few times but for a much shorter duration and less frequently than before , at least in my mind thats what I thought.

I drove back to the new Mechanic and told him it is better but still not right. He said its not the MAF, as I had that in mind to work on next . He says it prolly is the suppressors on the spark plugs. I told him I should change wires totally and he said just change suppressors. I told him his ex boss at MB dealership , who is shop foreman of mechanics, changed 3 suppressors and said if that did not solve it, plus changing all the plugs that the dealer did, I should change wires next . New mechanic said wires in my model car do not go bad. Grrr . Opinions

The new mechanic said also to change fuel filter when I change wires, to protect against bad gas . I might just change filter and give that a shot before I spend $$ money on wires. Does anyone think that could be the cause ?

I thought maybe give the sensors time to acclimate to the new rotors and it seemed better for a about and hour in stop and go, start and restart. After 45 minutes driving I accellerated quickly from a toll station and it stalled for a fraction of a second as opposed to 1-2 seconds as before.

Then I got into NYC and drove around in traffic and the hesitation although "MAYBE" not as severe is still there . Obviously the car gets warmer in NYC traffic and thats where I really have to be able to have the car run perfectly, to say it is fixed.

It looks like this is becoming a parts changing , guessing game for me .
I thought I would do the MAf cleaning but this mechanic says that stuff is garbage . So many mechanics, so much disagreement .

I am going to look tomorrow night at the wires to see if they are arcing and MAYBE disregard what he says and do a MAF cleaning . Or I could just change the fuel filter, unless I have an obvious arcing that I can see .

Again the problem happens and gets more frequent the warmer the engine is . Grr .Is there no way to diagnose this problem without just changing parts arbitrarily? He did not put a diagnostic tool on the car and I will call him tomorrow and ask him why not .

What should I look for on Caps /rotors? I am getting a daily headache from this.

The only good news is that this guy is very fair, pricewise and seems very honest .

Any other thoughts guys. I am going to take 2 tylenol .