Gonna change the cat..clear codes..see what happens then go into the valve body if the trans code comes back
Engine no acceleration
- Thread starter Uncleenvoy
- Start date
Mooseman
Moderator
JayArr
Member
You seem to have an extra resonator in your exhaust that I don't have. I have just pipe from the cat to the rear axle and then the muffler behind the axle.
Is there any way to cut at both ends of the resonator in a way that you could put couplings on it later to put it back together?
The alternative may be to cut the resonator out and replace it with a piece of pipe, are the inlet and outlet aligned or offset?
Is there any way to cut at both ends of the resonator in a way that you could put couplings on it later to put it back together?
The alternative may be to cut the resonator out and replace it with a piece of pipe, are the inlet and outlet aligned or offset?
Offset..but i can get to the bolts from here..are they pressed in here or screwed in. Tried banging on it but that accordion area here just makes it bounce back and forth..worst case ill just drill them out
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Mooseman
Moderator
That's actually the muffler between the cat and rear axle, then that's the resonator at the tailpipe. Yours must be loud with just a resonator.
On to the front part for now..when i got the muffler off the the rubber hangers it fell right on this can of pb and it exploded in my face..quite unpleasant.good thing i wear glasses..couldnt breathe for a while there though every inhale was all pb blaster..ran to bathroom and got it washed off
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Yeah that sucked..had to change my clothes.soaked in pb and making me dizzzy..gotta be more careful..well thats all for today had to wait for it to cool off to get to those manifold bolts..they weren't budging plus ive got enough exhaust burns on my hands that i need..got the 2 lower ones out but now its raining..so ill be back on it tmrw..think its supposed to stop raining in the afternoon
JayArr
Member
Looked under the vehicle and I do have a muffler and a resonator. I would have sworn there was nothing before the tail pipe. I must be getting old fart memory.
gmcman
Member
- Dec 12, 2011
- 4,656
I wasn't able to reply earlier, but I'm going to strongly speculate that your cat is not the issue. I don't see how you can go from zero motion to driving it away normally with a bad cat.
It sounds like you have something sticking in the trans, either a solenoid, valve, not sure. Could also be a loose connection, check the wire harness at the trans.
Do you have a Reduced Engine Power light?
It sounds like you have something sticking in the trans, either a solenoid, valve, not sure. Could also be a loose connection, check the wire harness at the trans.
Do you have a Reduced Engine Power light?
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@gmcman no reduced engine light..it seems to operate normally at cold temperature..or if i let it sit a while..just one more nut and ill get the cat off so no big deal..ill use that inspection camera to get in there and see whats up..only reason im leaning towards the cat is because of the 02 readings and i dont have a thermometer (gotta get one) but the area before the cat i couldn't touch it for not even a 1/2 a second and after the cat i could hold for about 2 seconds..isnt it supposed to be way hotter after cat
gmcman
Member
- Dec 12, 2011
- 4,656
If the cat lights off, it should be a good 100-ish deg higher. I'm not saying the cat isn't showing its age, but you were saying it had ZERO motion at one point, not moving, then you could drive it normally.
Sounds like you need another pressure test at the trans when it acts up.
Do you have a frozen or sticking brake?
Brakes are fine..wasnt zero movement..it would move but pedal to floor no acceleration..like its only moving on idle power..and then when it sits for a while or next morn it'll drive normal for about 10 minutes then condition returns
Will do..muffler is pretty much disconnected already..i didnt get to do anything today..but ill check that when done
So I have to ask... When you have pedal to the floor and "no acceleration... what is the engine rpm?
gmcman
Member
- Dec 12, 2011
- 4,656
So that sounds like the code he got is right, it's starting off in 4th gear when the shifter is in D. The result of a solenoid B stuck OFF?
gmcman
Member
- Dec 12, 2011
- 4,656
I suppose that's possible, sounds like he either has 2nd or maybe 4th from a start. Hard to say, since wish I knew more about what speed has to be met to engage 4th.
Also the band is for 2nd and 4th, so if it gets stuck, (the servo under the side cover where the vette servo would go) that would explain the very sluggish acceleration in D or 1.
Only got in an hours work on her today b4 it got dark..got the last mani nut off. Gonna have to remove crosssmember to get it out..free day tmrw so gonna get on it early..see if its the cat and if thats not the problem then get in the trans and change them solenoids
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@MRRSM momma didnt raise no fool..hell no..i would probably be posting from the hospital or the afterlife right now if i only had that jackstand (which ive been trying to return for the new ones for months now but they never have them)..the only reason its there is i jacked the front up off the ramp for a minute to take off the tire to get to the top mani bolt thru the wheel well..that didnt work..had to go from under with the wobble socket adapter and long ratchet extension..just never removed the jackstand when i put the wheel back on and lowered it back on the ramp..thanks for the lookout and the early morning chuckle though..had me laughing there...sun should be up soon and gonna get on it
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Don't feel insulted... You should be glad that we keep looking out for your interests. That Ramp is not visible in your first images. Please forgive my interference... The Observation...was Kindly Meant.
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@MRRSM absolutely not insulted in the least..i really appreciate you looking out for me.i would do the same for anyone..it would be wrong not to say something if you see something hazardous.. the only reason i laughed is because i realized that the first pics didnt have the ramps in view..thats why i took the wider shots and posted them..sorry if my last post sounded like i was offended..sentiment is often diffucult to express via text/post..gratitude and apprectiation is what i intended in that regard..thanx again
Didnt get much done today took out the large crossmember bolts on the passenger side and when i went to the drivers side i got hit with a bad bout of vertigo..dont know what that was about but i had ti call it a day and get some rest..all better now..try again tmrw and i have a doctors appointment on thursday anyway so ill be sure to mention that
You know the first thing that came to mind was covid..took my temp 96.2 and not feeling any of the other symptoms..but fine this morning
Used the inspection camera..honeycomb is intact..gotta go get a sd card to take pics..gonna drop cousin to airport..pick up a card on the way back and post
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Can i wash it out with the pressure washer?how brittle us that stuff?will the pressure washer destroy it?or should i just seal off one of the ends and the 02 sensor hole and fill it up with some soapy water or some chemial mixture and let it sit overnight night?
