If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
1992 CHEVY 4X4 SILVERADO 5.7L 350 ENGINE
ONLY HAS 72K MILES AND HAS BEEN MAINTAINED IN PERFECT CONDITION. RUNS GREAT
EXCEPT WHEN TOWING. IT DOES NOT HAVE THE POWER IT USED TO HAVE. IT STRAINS ALOT ESPECIALLY GOING UP STEEP HILLS. HAS NEW PLUGS, PLUG WIRES, OIL, AND NEW FILTERS. ANY IDEA WHY THE LACK OF POWER WHEN TOWING? COULD THIS BE A CLOGGED CATALATIC CONVER? |
Ads |
#2
|
|||
|
|||
"JLA" wrote:
>ONLY HAS 72K MILES AND HAS BEEN MAINTAINED IN PERFECT CONDITION. RUNS >GREAT >EXCEPT WHEN TOWING. IT DOES NOT HAVE THE POWER IT USED TO HAVE. IT >STRAINS >ALOT ESPECIALLY GOING UP STEEP HILLS. HAS NEW PLUGS, PLUG WIRES, OIL, >AND >NEW FILTERS. ANY IDEA WHY THE LACK OF POWER WHEN TOWING? COULD THIS BE >A >CLOGGED CATALATIC CONVER? Possibly but what grade of gas are you using? Low octane fuel on a hot day towing will lead to detenation and the computer will retard spark before you hear it most of the time but performance will take a big hit. -- Posted using the http://www.autoforumz.com interface, at author's request Articles individually checked for conformance to usenet standards Topic URL: http://www.autoforumz.com/4X4-1992-C...ict129579.html Visit Topic URL to contact author (reg. req'd). Report abuse: http://www.autoforumz.com/eform.php?p=631694 |
#3
|
|||
|
|||
You don't mention a new distributor cap and rotor?
Oh, CAPS ARE CONSIDERED SHOUTING on usenet. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's JLA wrote: > > ONLY HAS 72K MILES AND HAS BEEN MAINTAINED IN PERFECT CONDITION. RUNS GREAT > EXCEPT WHEN TOWING. IT DOES NOT HAVE THE POWER IT USED TO HAVE. IT STRAINS > ALOT ESPECIALLY GOING UP STEEP HILLS. HAS NEW PLUGS, PLUG WIRES, OIL, AND > NEW FILTERS. ANY IDEA WHY THE LACK OF POWER WHEN TOWING? COULD THIS BE A > CLOGGED CATALATIC CONVER? |
#4
|
|||
|
|||
"Mike Romain" wrote:
>You don’t mention a new distributor cap and rotor? > > He did not say it was missing. You might also check the fuel filter because I have a problem with that one years ago with my 89 burb which has the same engine but I suspect that it is a fuel quality issue were it is retarding the spark a lot on hard pulls and it is hot outside. Octane requiremnts go up with heat and load. -- Posted using the http://www.autoforumz.com interface, at author's request Articles individually checked for conformance to usenet standards Topic URL: http://www.autoforumz.com/4X4-1992-C...ict129579.html Visit Topic URL to contact author (reg. req'd). Report abuse: http://www.autoforumz.com/eform.php?p=632894 |
#5
|
|||
|
|||
IT IS NOT MISSIMG. RUNS LIKE IT CAME OFF THE SHOWROOM FLOOR EXCEPT WHEN
TOWING. IT WAS MY FATHER'S TRUCK AND HE TOOK EXTREMELY GOOD CARE OF IT. HE HARDLY EVER DROVE IT AND WHEN HE DID THE TRUCK PROBABLY NEVER TOPPED 60 MPH. I THOUGHT THAT SINCE THE ENGINE NEVER GOT BLOWN OUT AT HIGH SPEEDS THE CARBON MAY HAVE BUILT UP IN THE CONVERTER. IT IS A PELLETIZED TYPE CONVERTER BUT I CANNOT HEAR ANY PELLETS INSIDE IT WHEN YOU HIT IT. I THINK THIS MEANS THAT THE PELLETS HAVE SIEZED TOGETHER. |
#6
|
|||
|
|||
On Thu, 21 Jul 2005 11:07:41 -0400, "JLA"
> wrote: >IT IS NOT MISSIMG. RUNS LIKE IT CAME OFF THE SHOWROOM FLOOR EXCEPT WHEN >TOWING. IT WAS MY FATHER'S TRUCK AND HE TOOK EXTREMELY GOOD CARE OF IT. HE >HARDLY EVER DROVE IT AND WHEN HE DID THE TRUCK PROBABLY NEVER TOPPED 60 >MPH. I THOUGHT THAT SINCE THE ENGINE NEVER GOT BLOWN OUT AT HIGH SPEEDS >THE CARBON MAY HAVE BUILT UP IN THE CONVERTER. IT IS A PELLETIZED TYPE >CONVERTER BUT I CANNOT HEAR ANY PELLETS INSIDE IT WHEN YOU HIT IT. I THINK >THIS MEANS THAT THE PELLETS HAVE SIEZED TOGETHER. I have a 92 K1500 350 engine... I had a wierd thing happen to me. Truck ran fine at idle, but any load or hard acceleration it would ping bad and run like crap. Never set a code. I had to replace the starter one time and noticed the knock sensor while I was replacing the starter. For some reason I grabbed the knock sensor and it was loose. LIke it was broken internally??? Also the wire (pig-tail) was damaged. I imagine that somehow something hit it just enough to damage it. Short story is that I replaced the knock sensor and the connector and the truck ran fine. The knock sensor is easy to change and if you can't figure anything else out then its worth a few dollars to change this. You also need to make sure your timing is right. ON an older truck with some miles a timing chain may need replacment. --- Elbert Clarke remove ** to email |
#7
|
|||
|
|||
"JLA" wrote:
>IT IS NOT MISSIMG. RUNS LIKE IT CAME OFF THE SHOWROOM FLOOR EXCEPT >WHENTOWING. IT WAS MY FATHER’S TRUCK AND HE TOOK EXTREMELY GOOD >CARE OF IT. HE HARDLY EVER DROVE IT AND WHEN HE DID THE TRUCK PROBABLY >NEVER TOPPED 60 MPH. I THOUGHT THAT SINCE THE ENGINE NEVER GOT BLOWN >OUT AT HIGH SPEEDS THE CARBON MAY HAVE BUILT UP IN THE CONVERTER. IT >IS A PELLETIZED TYPE CONVERTER BUT I CANNOT HEAR ANY PELLETS INSIDE IT >WHEN YOU HIT IT. I THINK >THIS MEANS THAT THE PELLETS HAVE SIEZED TOGETHER. I seriously doubt it is the converter as a lot of them do not even use beads now so the bang test is without merit. I have 173K on a 89 burb I both new and the original cat still flows fine. Honestly they plug up rarely though some do happen but when it does it is just about always because the engine ran rich and in a very poor tune for LONG time and fouled the converter out. I strongly suspec you have a fuel quality issue as mine 89 is guttless in hot weather with 87 in it and I gave up even trying to use it in it years ago. -- Posted using the http://www.autoforumz.com interface, at author's request Articles individually checked for conformance to usenet standards Topic URL: http://www.autoforumz.com/4X4-1992-C...ict129579.html Visit Topic URL to contact author (reg. req'd). Report abuse: http://www.autoforumz.com/eform.php?p=633553 |
#8
|
|||
|
|||
On Thu, 21 Jul 2005 11:07:41 -0400, "JLA"
> wrote: >IT IS NOT MISSIMG. RUNS LIKE IT CAME OFF THE SHOWROOM FLOOR EXCEPT WHEN >TOWING. IT WAS MY FATHER'S TRUCK AND HE TOOK EXTREMELY GOOD CARE OF IT. HE >HARDLY EVER DROVE IT AND WHEN HE DID THE TRUCK PROBABLY NEVER TOPPED 60 >MPH. I THOUGHT THAT SINCE THE ENGINE NEVER GOT BLOWN OUT AT HIGH SPEEDS >THE CARBON MAY HAVE BUILT UP IN THE CONVERTER. IT IS A PELLETIZED TYPE >CONVERTER BUT I CANNOT HEAR ANY PELLETS INSIDE IT WHEN YOU HIT IT. I THINK >THIS MEANS THAT THE PELLETS HAVE SIEZED TOGETHER. Please TURN OFF YOUR CAPS lock key, all caps signify shouting, and is inappropriate for a normal post. Thanks. The best test for the cat WRT being plugged is a pressure gauge on the exhaust manifold (usually put in the O2 sensor position. You won't hear pellets inside when you hit it. They are much too small (size of a BB) and too light to hear. |
#9
|
|||
|
|||
SnoMan wrote: > > "Mike Romain" wrote: > >You don’t mention a new distributor cap and rotor? > > > > > > He did not say it was missing. You might also check the fuel filter > because I have a problem with that one years ago with my 89 burb which > has the same engine but I suspect that it is a fuel quality issue were > it is retarding the spark a lot on hard pulls and it is hot outside. > Octane requiremnts go up with heat and load. > > -- If the cap and rotor are old, the build up can just cause a weak spark which 'I' can notice as a loss of power on my engines. Too many folks forget to check them with the fancy 'e'lectronic ignitions because they don't arc out as fast as with the old points system. He still didn't say if it was checked. It was his dad's city truck, my bet is the cap and rotor are original still.... It sure is an easy check and a cheap fix if that is the trouble. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 5 | June 24th 05 05:27 AM |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 5 | June 8th 05 05:28 AM |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 5 | May 24th 05 05:27 AM |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 7 | February 1st 05 01:43 PM |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 10 | December 2nd 04 05:19 AM |