Catalatic converter

[bad @SS chevy 10+ year member]

the ****** doesnt slip or anything.

 

[bad @SS chevy 10+ year member]

rpms just stumble as its trying to upshift. feels like a hesitation shift.

 

[IgnoreMe 5,000+ posts]

so what do those terms mean? its really hard trying to diagnose anything just from someone describing noises, its going to be even harder doing it online with nothing but words lol

edit: ok i get you now. i would honestly have to say take it to the dealer or a ****** shop. someone needs to look it over. checking out a valve body isnt terribly hard assuming you have an experienced person looking it over. the misfire issue, i would just reset the CEL and see if it comes back, although usually the ECU will keep the code as a pending code, until it happens again, and then it will set off the CEL. so its already a good sign that it wasnt a fluke, but might as well try it. as for the catalytic converter, again, i would just hold out on it. one thing that really irks me is the fact that you say wide open throttle, the car drives fine, but when you drive calmly it hestitates. at wide open you are going to be moving the most exhaust, so you should notice hesitation at that point most.

also dont rule out racerx's suggestion on the coil pack. a lot of times specific cars have the same problems over and over, and if he's seen that the coil packs start acting up on those engines, it might be a good idea to keep that in mind

 

[bad @SS chevy 10+ year member]

okay, As im accelerating,, when the car starts to shift gears @ 45-50mph.. The car stutters, rpm fluttlers, then i have to accelerate harder to get the car out of that bog , and then when it upshifts its fine..

 

[Racerx250 10+ year member]

hmm.. Another possibility is 1 of your injectors. I know on my 99 it has the same engine. That engine is prone to electrial problems.. coil pack/ ICM/ routing of spark plug wires. And every so often an injector will crap out. I had my cat replaced about 89k miles. Now that I have overlooked my transmission fluid for so long. eventually I will have to rebuild the ******. My fluid is now burnt. So consider yourself lucky. Keep up with the maintanence.

 

[Racerx250 10+ year member]

Try running some lucas injector cleaner/ upper valvetrain cleaner throught it. Possibly help it. No guarantee's though.

 

[IgnoreMe 5,000+ posts]

okay, As im accelerating,, when the car starts to shift gears @ 45-50mph.. The car stutters, rpm fluttlers, then i have to accelerate harder to get the car out of that bog , and then when it upshifts its fine..

so long as the ****** fluid level is spot on, im gonna seriously lean towards a valve body issue . let us know what it was when you get it fixed.

 

[bad @SS chevy 10+ year member]

I just went out and checked the ****** level. It looks low.

 

[IgnoreMe 5,000+ posts]

I just went out and checked the ****** level. It looks low.

did you check it by mfg specs?

some mfg's say ****** is park and engine running. while others might say ****** in nuetral with engine running. do you know what the mfg specifies?

 

[bad @SS chevy 10+ year member]

engine on, in park...

 

[WhoSayWho? 5,000+ posts]

Ive had the codes read. And the only code that shows is Misfire on cyl. 3... But i have new plugs/wires. so how could cyl 3 be misfiring?

Perhaps the new spark plug is not tightened well enough. Because it is easy to strip the aluminum, sometimes they will over compensate by not tightening well enough. Could be several things.

have you noticed a rotten egg smell? Often you can if its your converter.

 

[bad @SS chevy 10+ year member]

yes, i have noticed a weird smell.

 

[WhoSayWho? 5,000+ posts]

IDK, but you need to find the most trustworthy shop that you can. I recently took my vehicle into a shop asking them to check my plugs because my vehicle was stalling out at around 50mph, but would then pick up again.

I had this situation before and changing the plugs fixed it.

The first shop said it was my CA -- and that Toyota parts would be 1,800 but they could mod a universal and change plugs and wires for 600.

I called a muffler shop and they said they could do parts and labor for 180. I took it in and the guy, after putting it on the rack, reving it up and tapping on the CA came back and said that he was 90percent sure that it was not the CA. Honest guy.

He gave me the name of a solo mechanic. I went by but he said it would be several days before he could test it.

In the meantime, I dropped by a shop and asked them just to change out the plugs. They immediately said that I needed new coils. 600.

I said no thanks. I went to the real mechanic and it turned out that one of the plugs was loose and had become fouled. No charge.

Lesson, you can spend a lot of money while idiots / thieves drain you dry troubleshooting. Go to the most reputable mechanic you can find.

 

[mazdakid 5,000+ posts]

the cat was bad on my girlfriends 97 blazer and it was causing it to not want to shift into gears and was running like crap. changed the cat and havent had the problem since

 

[bad @SS chevy 10+ year member]

Checked the check engine code.

said

evap emission problem... wtf does that mean? its the cat?