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DiscoWeb Bulletin Board » Message Archives » 2003 Archives - Discovery Technical » Archive through September 03, 2003 » Clanking and engine stalling on Disco1(auto) « Previous Next »

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Sergei Rodionov (Uzbad)
New Member
Username: Uzbad

Post Number: 11
Registered: 08-2003
Posted on Thursday, August 28, 2003 - 12:27 pm:   Edit Post Delete Post Print Post

Its probably been answered before, but i cant find old threads with same issues, so here it goes.

If i am going higher than about 20mh , in certain range speeds (most noticeable at 50 actually) - if i am releasing gas pedal i hear clanking sound and actually feel like something banged underneath the truck. Same effect if i will try to press pedal after that (i.e clank + bang). Any pointers at what i should look for?

Another thing is that very rarely, at seriously low speed near stop signs engine just dies, unless i am applying some gas. Its almost like what would happen with manual.. Automatics aint sppse to stall like that i believe, but weirdest thing is - my wife's old Audi used to do that too. I havent been around than to find cause, but it almost looks like its european thing to get that effect.
 

Peter Matusov (Pmatusov)
Senior Member
Username: Pmatusov

Post Number: 1038
Registered: 09-2002
Posted on Thursday, August 28, 2003 - 12:50 pm:   Edit Post Delete Post Print Post

first issue - combined slop in the transfer case, driveshafts, and diffs. Nearly all full-time 4x4s do it - there's just too many gears and sprockets to develop a slack.

second - intake vacuum leak?
 

Kyle Porter (Higgins)
New Member
Username: Higgins

Post Number: 35
Registered: 03-2003
Posted on Monday, September 01, 2003 - 08:02 pm:   Edit Post Delete Post Print Post

Dude I think I have that exact same issue.
It's happended twice in the last two months. Naturally once when my brother in law who drives a 4runner was with me (I would have really prefered it if nothing went wrong as we always banter about each others truck!!!)
Starts up and idles fine but once you get going and take your foot off the gas you can feel what seems like the transmission just "let go" clunk and the rpms start to drop a bit (if I remember)
then when you step back on the gas it clunks back into gear.
Screwed!
Hope we figure this out and it's not serious.
 

Howie (Fritos)
Member
Username: Fritos

Post Number: 43
Registered: 01-2003
Posted on Tuesday, September 02, 2003 - 04:45 am:   Edit Post Delete Post Print Post

The first issues sounds like a bad catalytic converter. Sneak under the truck (while cool, of course) and bang the cats with your fist a few times. If you are able to hear some metallic clanking (sounds like marbles are loose), chances are you need to replace the catalytic converter.

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