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85 Jetta needs pedal to start
Volkswagen Golf, Jetta, Corrado, Vanagon, new models, etc. (rec.autos.makers.vw.watercooled)
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85 Jetta needs pedal to start -
03-14-2007
, 08:20 PM
#2
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Working on an 85 Jetta GL with 1.8L gas, auto trans, ac, 210,000 miles. When we got the car four years ago, it started exactly like it should - get in, turn on the key, wait until the fuel pump stopped buzzing, kick the starter, and the engine started every time (well, not every time until I put a relay into the wire going to the starter solenoid to increase the current enough to overcome the heat swelling problem). About six months ago, I began having trouble starting the car, mostly when it was warm (not hot, not cold). I could always start it, but it required some fluttering of the pedal to get things to catch. I've done a lot of stuff to this car trying to get it into better shape. When it came to me, it pinged badly, and I discovered a previous owner had removed the in-tank fuel pump and not replaced it. Putting one in removed the ping (go figure!). I did a full tune on it last summer: all filters, plugs, wires, cap, rotor, timing, etc. That sure made it run smoother. I discovered that the fifth injector was not injecting, so I replaced the sensor for it, which got it going. I thought I had the problem solved when I did that, but it still proved hard to start. I pulled the four engine injectors and replaced the large and small o-rings and the burned-up ceramic shrouds. While I had the intake manifold off (don't ask) I replaced the oxygen sensor. Now, the car has plenty of zip and moves up through the gears very smoothly; as a matter of fact, it drives almost like it was new. At this point, it starts a lot easier than at its worst, but I still have to flutter the pedal to make sure it will start - otherwise, it will crank forever without catching. It no longer seems to be temperature related. I keep it in a garage at home, but park it outside all day at work. When I get into the 65-degree car in the morning, it won't start without a little pedal flutter. When I go out at the end of the workday and start the 25-degree car, it needs a little pedal flutter to start. I seem to be able to always start the car without incident, but my wife and son have both run the battery down trying to get it going, which is why I'm still pursuing the problem. I have access to a complete shop every Friday night, with all the tools anyone could ever want, so I can check out almost anything anyone suggests (I'm auditing the open shop class offered through the auto mechanics class at the local technical college). So, the question is, what should I go after next? Pat |
2. Make sure your spark is strong and verify the action of the 5th
injector again.
3. Perhaps check the standing fuel pressure... you may have to click
the relay twice before you actually crank.
4. Crack in the coil (remote at best). Enough to bleed down on
starting, but the higher running-voltage makes it do OK.
All of the above based on the certainty that the fuel-filter is
clear... which is indicated by the fact that it runs well when
started.
Four SWAG & Random thoughts.
Peter Wieck
Wyncote, PA
#3
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Working on an 85 Jetta GL with 1.8L gas, auto trans, ac, 210,000 miles. When we got the car four years ago, it started exactly like it should - get in, turn on the key, wait until the fuel pump stopped buzzing, kick the starter, and the engine started every time (well, not every time until I put a relay into the wire going to the starter solenoid to increase the current enough to overcome the heat swelling problem). About six months ago, I began having trouble starting the car, mostly when it was warm (not hot, not cold). I could always start it, but it required some fluttering of the pedal to get things to catch. I've done a lot of stuff to this car trying to get it into better shape. When it came to me, it pinged badly, and I discovered a previous owner had removed the in-tank fuel pump and not replaced it. Putting one in removed the ping (go figure!). I did a full tune on it last summer: all filters, plugs, wires, cap, rotor, timing, etc. That sure made it run smoother. I discovered that the fifth injector was not injecting, so I replaced the sensor for it, which got it going. I thought I had the problem solved when I did that, but it still proved hard to start. I pulled the four engine injectors and replaced the large and small o-rings and the burned-up ceramic shrouds. While I had the intake manifold off (don't ask) I replaced the oxygen sensor. Now, the car has plenty of zip and moves up through the gears very smoothly; as a matter of fact, it drives almost like it was new. At this point, it starts a lot easier than at its worst, but I still have to flutter the pedal to make sure it will start - otherwise, it will crank forever without catching. It no longer seems to be temperature related. I keep it in a garage at home, but park it outside all day at work. When I get into the 65-degree car in the morning, it won't start without a little pedal flutter. When I go out at the end of the workday and start the 25-degree car, it needs a little pedal flutter to start. I seem to be able to always start the car without incident, but my wife and son have both run the battery down trying to get it going, which is why I'm still pursuing the problem. I have access to a complete shop every Friday night, with all the tools anyone could ever want, so I can check out almost anything anyone suggests (I'm auditing the open shop class offered through the auto mechanics class at the local technical college). So, the question is, what should I go after next? Pat |
#4
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Working on an 85 Jetta GL with 1.8L gas, auto trans, ac, 210,000 miles. When we got the car four years ago, it started exactly like it should - get in, turn on the key, wait until the fuel pump stopped buzzing, kick the starter, and the engine started every time (well, not every time until I put a relay into the wire going to the starter solenoid to increase the current enough to overcome the heat swelling problem). About six months ago, I began having trouble starting the car, mostly when it was warm (not hot, not cold). I could always start it, but it required some fluttering of the pedal to get things to catch. I've done a lot of stuff to this car trying to get it into better shape. When it came to me, it pinged badly, and I discovered a previous owner had removed the in-tank fuel pump and not replaced it. Putting one in removed the ping (go figure!). I did a full tune on it last summer: all filters, plugs, wires, cap, rotor, timing, etc. That sure made it run smoother. I discovered that the fifth injector was not injecting, so I replaced the sensor for it, which got it going. I thought I had the problem solved when I did that, but it still proved hard to start. I pulled the four engine injectors and replaced the large and small o-rings and the burned-up ceramic shrouds. While I had the intake manifold off (don't ask) I replaced the oxygen sensor. Now, the car has plenty of zip and moves up through the gears very smoothly; as a matter of fact, it drives almost like it was new. At this point, it starts a lot easier than at its worst, but I still have to flutter the pedal to make sure it will start - otherwise, it will crank forever without catching. It no longer seems to be temperature related. I keep it in a garage at home, but park it outside all day at work. When I get into the 65-degree car in the morning, it won't start without a little pedal flutter. When I go out at the end of the workday and start the 25-degree car, it needs a little pedal flutter to start. I seem to be able to always start the car without incident, but my wife and son have both run the battery down trying to get it going, which is why I'm still pursuing the problem. I have access to a complete shop every Friday night, with all the tools anyone could ever want, so I can check out almost anything anyone suggests (I'm auditing the open shop class offered through the auto mechanics class at the local technical college). So, the question is, what should I go after next? Pat Perhaps the fuel pressure-regulator, that would affect hot/warm starting... |
#5
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So, the question is, what should I go after next? Pat i'd check the ( thermo-time switch ) and the spray pattern |
#6
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pmoore44 (AT) gmail (DOT) com wrote: Working on an 85 Jetta GL with 1.8L gas, auto trans, ac, 210,000 miles. When we got the car four years ago, it started exactly like it should - get in, turn on the key, wait until the fuel pump stopped buzzing, kick the starter, and the engine started every time (well, not every time until I put a relay into the wire going to the starter solenoid to increase the current enough to overcome the heat swelling problem). About six months ago, I began having trouble starting the car, mostly when it was warm (not hot, not cold). I could always start it, but it required some fluttering of the pedal to get things to catch. I've done a lot of stuff to this car trying to get it into better shape. When it came to me, it pinged badly, and I discovered a previous owner had removed the in-tank fuel pump and not replaced it. Putting one in removed the ping (go figure!). I did a full tune on it last summer: all filters, plugs, wires, cap, rotor, timing, etc. That sure made it run smoother. I discovered that the fifth injector was not injecting, so I replaced the sensor for it, which got it going. I thought I had the problem solved when I did that, but it still proved hard to start. I pulled the four engine injectors and replaced the large and small o-rings and the burned-up ceramic shrouds. While I had the intake manifold off (don't ask) I replaced the oxygen sensor. Now, the car has plenty of zip and moves up through the gears very smoothly; as a matter of fact, it drives almost like it was new. At this point, it starts a lot easier than at its worst, but I still have to flutter the pedal to make sure it will start - otherwise, it will crank forever without catching. It no longer seems to be temperature related. I keep it in a garage at home, but park it outside all day at work. When I get into the 65-degree car in the morning, it won't start without a little pedal flutter. When I go out at the end of the workday and start the 25-degree car, it needs a little pedal flutter to start. I seem to be able to always start the car without incident, but my wife and son have both run the battery down trying to get it going, which is why I'm still pursuing the problem. I have access to a complete shop every Friday night, with all the tools anyone could ever want, so I can check out almost anything anyone suggests (I'm auditing the open shop class offered through the auto mechanics class at the local technical college). So, the question is, what should I go after next? Pat Perhaps the fuel pressure-regulator, that would affect hot/warm starting... If you have all the tools I would vote for fuel pressure first. Fuel |
that a "new" used cpr fixed. I also replaced the fuel distributor
somewhere in the life of the car. I think I was attempting to clean
the distributor and goofed somethng up. You can remove the cpr to
flush out the rust stuck in the fuel screen. It costs nothing if you
do not lose the copper crush washers.
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