Bought an 80 TDI last week to use as a daily drive. The car is fairly good order but the engine has slight issues which I am hoping to resolve. The car has 139k on it. It seemed underpowered and has the shuddering in 4th and 5th which I am fairly sure is linked to the speed sensor as when it's disconnected it doesn't do it. Here's the car as it sits now:
I had one of these cars years ago which was also underpowered (although it didn't shudder) I knew there were a few things which could be done. When I ended up breaking my old car I noticed the cat was blocked and the inlet manifold was badly restricted due to gunge build up.
First job was the cat, simplest way to do this is to beat the insides out of the cat (not the ginger yoke which is normally found on the front door step unfortunately). This one wasn't too bad, I've seen a lot worse:
Then, this morning I tackled the manifold which also wasn't too bad. I let it steep in a bucket of thinners whiile I checked out the rest of it. One of the vac hoses has near worn through:
I replaced this and also found a split in the boost hose on the manifold (which isn't the original one) so shortened it a bit. Has now got a bit more lift alright, still doesnt idle just right and shudders too. Vagcom showed a fault with the throttle position sensor so that still has to be replaced.
I had one of these cars years ago which was also underpowered (although it didn't shudder) I knew there were a few things which could be done. When I ended up breaking my old car I noticed the cat was blocked and the inlet manifold was badly restricted due to gunge build up.
First job was the cat, simplest way to do this is to beat the insides out of the cat (not the ginger yoke which is normally found on the front door step unfortunately). This one wasn't too bad, I've seen a lot worse:
Then, this morning I tackled the manifold which also wasn't too bad. I let it steep in a bucket of thinners whiile I checked out the rest of it. One of the vac hoses has near worn through:
I replaced this and also found a split in the boost hose on the manifold (which isn't the original one) so shortened it a bit. Has now got a bit more lift alright, still doesnt idle just right and shudders too. Vagcom showed a fault with the throttle position sensor so that still has to be replaced.
. Don't know about England but in NI that is an instant MOT fail! 2 of the tyres on it which passed under advisory would also have failed in NI. Have them replaced now and the alignment done (fitted bambridge's uprated adjusters)
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