Bad Week !!!!! Need Help Bad !!! SS acting up
 

i had the same thing happen in my truck my 99 ram 1500. went to go on the highway and sarted to get up there and truck start chuggin not switchin gears let off gas ran fine put on gas eninge light flashed and flashed at me took it in the shop found out it was a fuel pressure regulator and got it replaced problem was fixed maybe the same? not sure just sounds like what i wen tthru in my truck

Thank u back to the shop I go in the morning ! MPG went down from 25 to 16.5 !

most times thats one of the common issues with the regulator that and stalling and such no problem. hope it helps, hopefully thats right, nice car by the way. signin off for the night

Thanks take it easy !

It is your catalytic converter. I just had the same symptoms and it acted the same as yours. The rest of the stuff they did was a waste of money.:(

here's a link ." https://montecarloforum.com/forum/engine-transmission-12/3-8l-questions-29004/ "

CAT for sure :thumbsup:

First, I'm curious why did the exhaust manifold need replaced (or was it just the gasket for the manifold)? The stock manifolds don't really go bad from what I've seen.

My guess would be a potential bad CAT (agreeing with a coupld others that have chimmed in). Sounds like it's not flowing exhaust out like it should and sometimes it does.

BUT, before dumping ANY money on it, you mentioned the check engine light flashed on. This means an internal diagnostic failed on the car and the computer has some data stored regarding what happened. From what I've seen, most cheap ODB-II scanner read current and history codes. I found messing with a Snap-On Scanner is can read current and history codes BUT can read other code storages on the car, such as last code thrown, last code thrown since last cleared, and codes thrown during this ignition cycle. Bottom line, the light flashed, there's a code stored in there. Retrieve it and share what was found, it may further confirm the problem as a CAT or point you in a different (and hopefully correct) direction.

come to think off it i did also have the cat cut off on my truck at the same time i had to replace the fuel pressure regulator so that could also be the problem as well.

I think you might have something wrong with your

http://3.bp.blogspot.com/-3wmY0oHCr2...00/aaa-cat.jpg

maybe i just dont understand the picture but who has something wrong with their head?

Manifold has a hole in it !

Love the Cat Pic ! Lmao well took it back to the shop and had the guy ride along now their saying something about low fuel pressure and misfire in cylinder 4. Now i'm on the hurry up and wait action !

lol wow I'm slow today :O it was a cat i totally missed the big picture i was focused on the (what looks to be) lime peel on his head lol

Are you taking your car to the dealer this whole time? Sounds like they're almost doing a full rebuild....

Monte04ls.... wow..... lol :P

I had a restored 1976 El Camino Custom 350/2 automatic. The same symptoms you mentioned on your car happened on my Elk. Since it was a restoration, I had gone as far as to install a new CAT as well to keep it all all original. Long story short: Same problem as you. Turned out that for whatever reason, the new CAT was bad and did the same thing. I'm not sure exactly how you would test it for flow-rate but I sure concur with the other members. Hope you get it fixed soon!

No just taking it to a local spot. So if its a bad cat what route should I take without getting raped ? I heard someone talking about a high flow cat on zzp is much cheaper then stock.

It will be a lot cheaper but also might throw a code, I would look into their downpipe with the cat, cheaper than an oem replacement cat and you have the downpipe upgrade also

Thanks for everybody who chimed in ! It was the CAT 80% Clogged.

i would confront the company that charged you for unneeded things

I'm cool pretty much everything I got I needed the rear manifold had a whole in it and the plugs and wires looked like crap and the fuel filter was in bad shape. Just wish I didn't have to come off all this money in one week !

How much did it cost to replace the cat and the manifold?

The manifold hurt part and labor was $690.15 so far quotes on the cat one shop is saying $199 & another is saying $281

Thanks, I think I might have an exhaust leak too, I hear a tapping when I accelerate and my mpg has went down. I'm not showing any codes. I also have a ruff idle. So far I did the wires, plugs, coils, and icm. My monte is running hotter that normal too. The tapping sound is the thing that is getting me because I don't know where it is coming from. I plan on taking it to my local shop this weekend to try to find the problem.

Hope ur area has better cost then mine. Did u do the work urself ?