1991 jetta eco diesel shaking bad

[derrickd95]

So I replaced the o ring on the fuel filter and bubbles went away and it didn't shake until it was warmed up. But the alternator idler pulley failed and came off the bolt and then I had to cut the belt to get it home. I will press in a new bearing and replace the belt and check the timing and see where I am at then. Just figuring would update the progress

[air-cooled or diesel]

I forgot to mention it is a power steering with air-conditioning engine I have also replaced both front control arms

whooha, thats like all of it, add cruise control and are there any more accessories(maybe radio^)?, heheh, i have one, factory air, p/s, no cruise. p/s is a little pita.
why do you mention control arms? 1 question concerning control arms, the press-in rubber bushs, pressed in right? check manual for correct side to press in bushings.
thinking if hard idling is continuing grounding problems. the next thing to check are circuits (usually grounds). that can be a chore, and you have to know how to read ohms for grounding of each individual circuit. start with the vent/fan circuit. wheew im sweating just thinking how to tell you to do this,,gl.

[air-cooled or diesel]

during these 'long drives' you have (severe?) shaking. take note, is it only the fan circuit? when it does start shaking turn everything off(accessories) and does it still shake? of course also you must check for air in fuel lines, but it may well be the fan circuit/ground, or such.

[derrickd95]

Shakes before the fan kicks on, I cleaned up all the grounds, cleaned positive connections, changed motor mounts, blew out the fuel line, alt is charging at 13.9, changed out to a new alt idler pulley, checked timing, checked valves all within specs. Now it shakes only whe. Turning the steering wheel and gets progressively worse the farther I turn to lock. Pulling out the cold start valve is the only thing that takes away the shakes. I'm thinking of raising the idle and riding it until it dies. Fans kick on when it's over the center mark on the temp gauge. All belts are specific for the Eco diesel and are perfect matches

[air-cooled or diesel]

a couple of things about this,, one thing make sure your belt isnt too tight, i run my belt loose, but on that pump i have going on 1 mil miles, and unless i get a good used pump, that pump just has to stay. i just get some squealing, it may wear the belt some, but with no loss of pump performance(at idle/lo speed). another when was the last time you changed out p/s fluid, in some cars it can be the original fluid. i like to use synth, or semi-snyth fluid. if you do decide to drain p/s system, make sure you prime pump when you get fresh fluid in it.
huh tho it seems you car gets it in it to shake at idle a lot. raising idle speed is harmless, i suppose, and easy. (do when warm).

[ORCoaster]

Could it be that you have some sort of restriction in the PS system?  Thus the further you open the system to turn the wheels the more strain it puts on the engine?  And the increased idle is just able to make up for that load?  Pulling the Cold start might advance the pump just that little bit that prevents the SHAKES"?

[derrickd95]

Thought of that and I drained the system and pulled vac on a gauge looking for a restriction and I pulled the lines and cleaned them out. Going to stay with electrical. With my fans on and the heater the alternator is only putting  out 12.7 v.

[air-cooled or diesel]

main drain is on the backside of the rack unit; to drain it all,,(you ll have to put her on stands),. and like i said when you add new fluid, turn pump pulley right, clockwise, a good few times, to prime, and dont let level drop when you start it up,,be right there and check that fluid level.

[air-cooled or diesel]

Going to stay with electrical. With my fans on and the heater the alternator is only putting  out 12.7 v.

id have to check but 12.7 is way to low for Just the fan, whats going to happen when you have lights, fan on, and maybe a few more accessories. like a/c unit to name one more,

[derrickd95]

12.7 is with engine fan, heater and lights

[air-cooled or diesel]

if you pulled p/s lines you may want to get new orings for lines,,1 word of advice, dont ever put in stop-leak, in any unit as it is.

[derrickd95]

Well I was driving it home last night when it cut out on me on the highway. I got it restarted and got home and charged the battery cause it was dead. Won't idle at all with out the cold start on. I am through dumping money and time into it lol. I put it on Craigslist for $800. Thanks for all the help. I really wanted the car and the mpg but it doesn't look like it's in the cards on this one.

[air-cooled or diesel]

sorry to hear that; no one can be sure if a new battery + alternator will solve problem, after so long of running current thru a bad ground(s) and more parts of the circuit get fried. soo no telling,