exhaust problems = power loss?
Thread Starter
|
Fleet Mechanic
Joined: Feb 2003
Posts: 1,314
Likes: 35
exhaust problems = power loss?
I am having a problem with my little Mercury Topaz, not its bigger brother F-250. (Thankfully) But I think it is a valid exhaust issue for all vehicles.
It is a 2.3L auto. At speeds above 2800 rpms, the tach cuts out and goes to about 0 for a second or two, then back up. At 3000 rpms it happens constantly so that I cannot even drive 60. This is bad especially on hills.
I tried driving in 2nd for a while and since then it makes this loud noise coming from exhaust.
The muffler has not been replaced in 4 years. Could a problem with mufler/cat be a cause of this power loss?
It is a 2.3L auto. At speeds above 2800 rpms, the tach cuts out and goes to about 0 for a second or two, then back up. At 3000 rpms it happens constantly so that I cannot even drive 60. This is bad especially on hills.
I tried driving in 2nd for a while and since then it makes this loud noise coming from exhaust.
The muffler has not been replaced in 4 years. Could a problem with mufler/cat be a cause of this power loss?
Elder User
Joined: May 2002
Posts: 794
Likes: 0
From: American by birth, TEXAN
yes, if you are getting too much back pressure from the cat then you would be screwed up, also because its ggot an ecm right? well i dont think backpressure is measured and sent to the ecm...so maybe...
Thread Starter
|
Fleet Mechanic
Joined: Feb 2003
Posts: 1,314
Likes: 35
It has gotten much worse yesterday. Cannot drive faster than about 45-50, the RPMs go down for longer and the exhaust is moderately loud. It's most likely the cat, it has to be. Altought my original theory was that it is the coil.
Yes, it is EFI and has EEC-IV.
Yes, it is EFI and has EEC-IV.
Elder User
Joined: May 2002
Posts: 794
Likes: 0
From: American by birth, TEXAN
well you can have a muffler shop do a back pressure test for free, i did and i had 3psi which is high from what i understand, so i bought a bassani y pipe with a high flow cat
just an excuse to put something else cool on your truck
just an excuse to put something else cool on your truck
