I have a 1996 WV Polo that doesnt start intermittently (more often than not) If I interfere with some f the relays, eg pull them out and put them back then it does start on some occasions. How do you identify the Fuel relay?
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Re: VW Polo doesnt start
When you turn the ignition switch on, the gas pump relay should turn on and go off to pressurize the system. You can keep the car in neutral/park, get down as low as you can to the driver's floor board and reach up and turn the ignition switch to on [but not to the point that you actually allow the engine to turn over]. Repeat this step until you hear the relay and can actually feel the little black (box) that is actually performing an electromechanical switching.
Check here first----> , it is usually on a diagram within or near your fuse panel.
It is a start. Secondly, I'd check for any play/movement on your negative/positive terminals of your battery and starter motor. Should these be snug, loosen them and clean the terminals on your battery AND starter. This may be "stupid" and "obvious" to most but they don't do it and that is usually the main cause... even if it "appears good".
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A 1996 Jetta engine is non-interference. This is the 2.0 distributor
equipped engine, sometimes called the ABA motor. On rare occasions,
non-interference engines may self-damage when the belt breaks, such as
the cam shaft may bind etc, but they usually survive. When you installed the belt were you certain that the piston in #1 was at top dead center on the compression stroke, because if it was not, your cam is 180 degrees out (it turns 2x per one crank revolution). Turn the engine over by hand with #1 plug out and your thumb over the spark hole, then check your timing marks.
Maybe fuel pump issue. maybe crank sensor issue. sounds like it doesnt matter if you remote start or key start. You just have an intermittant issue. If its the crank sensor you should have a code stored even tho the light is still off. If its a fuel pump issue your prabably going to have to do a pressure test to be sure or spray quick start when it doesnt start. If it starts and stalls then you know you havea fuel issue. Try rotating the fuel pump relay with the horn relay. Your owners manual should say which one it is. If not just move them all one space like musical chairs. You have several that are the same. The relays are in the fuse block under the hood and are the larger rectangular ones.
As the intermittent wipers are based on resistance, try the easiest fixes first:1. Disconnect the negative terminal on the battery. Pull the relays for the blower motor and both wiper relays and the 30 amp fuse for the wipers. These are located under the hood in the fuse/relay box. The best way is to be careful and use a set of pliers. The reason you pull the blower relay is so that it is easier to pull the intermittent relay. Clean these off the blades of the relay with a burnishing tool (in a pinch you can use your wife's nail polisher that is like very fine sandpaper. Once the are a pretty silver color, wipe them off with some rubbing alcohol. Put them in and pull them out about 5 times into the relay socket and leave them in. Clean the blades for the fuse with a cue tip and rubbing alcohol and then put the fuse in and pull it out about 5 times then leave it in. Hook up the negative terminal and take the key to the on position and turn the wiper to the lowest position. If it works if should take about 36 seconds between strokes. 2. The next easiest is taking the cover off the top of the steering column and pulling off the wiper switch and replacing it. There are three screws that hold the cover and two that hold the switch plus the electrical connector. You can buy a used one at a "junk yard" for about $20. 3. Replace the wiper motor (takes about a couple of hours start to finish). It involves removing the wipers, the cowl (plastic cover over the wiper motor right below the windshield), loosening and lifting the scissor arms for the wiper arms and removing the motor (this involves disconnecting the power connector and feeding it back to the motor).Hopefully your issue is like 95% of the wiper issues and it is just a little bit of corrosion on the wiper relays and fuse!
is the relay ok? i think what you are hearing could be 2 relays at the same time. i think the fuel relay works with another aluminium looking one. there's usually a few of them that are identical so you can swop to check.
the starting issue is probally down to the throttle housing being al carboned up.take it of and get it spotless,a toothbrush and some solvent is good.make sure you clean around where the butterly sits and the edges of the butterfly itself,dont just look from the top and think its looks ok take it off.
try cleaning the throttle body with carb cleaner and then put it back through basic settings by carrying out a road test under the following conditions hard acceleration, cruising and over run, that may cure it