Question about 1998 Volkswagen Beetle

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When car gets to operating temp it looses spark

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Secondary Spark Test This spark tester looks just like a spark plug. Attach the clip to ground and crank the engine to check for spark. when car gets to operating temp it looses spark - 91052p10.jpg

This spark tester has an adjustable air-gap for measuring spark strength and testing different voltage ignition systems. 91052p11.jpg

Attach the clip to ground then crank the engine to check for spark. 91052p12.jpg

This spark tester is the easiest to use. Just place it on a plug wire and the spark voltage is detected; the bulb on the top will flash with each pulse. when car gets to operating temp it looses spark - 91052p10.jpgttp://arrc.epnet.com/autoapp/VW_BEET_98-05_F3/p5images/9000/91052p10L.jpg">91052p10.jpg

NOTE: The best way to perform this procedure is to use a spark tester (available at most automotive parts stores). Three types of spark testers are commonly available:

  • The Neon Bulb type is connected to the spark plug wire and flashes with each ignition pulse.
  • The Air Gap type must be adjusted to the individual spark plug gap specified for the engine.
  • The last type of spark plug tester looks like a spark plug with a grounding clip on the side, but there is no side electrode for the spark to jump.
NOTE: The last two types of testers allow the user to not only detect the presence of spark, but also the intensity of the spark. Orange/yellow is weak, blue is strong.
  1. Disconnect a spark plug wire at the spark plug end.
  2. Connect the plug wire to the spark tester and ground the tester to an appropriate location on the engine or frame.
  3. Crank the engine and check for spark at the tester.
  4. If spark exists at the tester, the ignition system is functioning properly.
  5. If spark does not exist at the spark plug wire, perform a diagnostic test of the ignition system using individual component diagnosis procedures.
Removal & Installation 2.0L Engine when car gets to operating temp it looses spark - vw-02-20-7054.giftem components (Code AEG) vw-02-20-7054.gif
Ignition system components (Codes AVH, AZG, BEV)
vw-02-20-7055.gif

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Posted on Oct 14, 2010

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2000 tundra v6 5-speed cold start truck runs great, park it for 20-30 min it will start fine but after going 1/4 mile it dies, looses power. pull over and it will backfire and sputter until it eventua


bad need of a tuneup? like new spark plugs, ?
172 , is 02 rich/ lean warning. this one is low oxy for rich.
this code can just be a victim. for sure , with misfire.
means 02 sensor stuck at rich,
what is water temp in engine coolant, at failure? less than 150F?
could be lots of things.
leaking injectors, bad fuel.
injector sticking> causing misfire.
id use a scan tool and watch all sensor when it fails.
too high fuel pressure.
misfires cold, but only luke warm cold starts not fully cold.

just one DTC, no P0300 or 30x misfire codes, not even P0300 pendings?

Jan 31, 2014 | 2000 Toyota Tundra

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96 corsica wont start when hot replace crank sensor and still does it 2.2 any help


nice guess. hot soak failures.
you failed
you failed to check spark, if spark is good, then it not that.
4 spark plugs tested,(ever tune it up?) and use a timing
light to see if it hits everytime and on the mark,
yes, timing lights work on cranking motors,
they do not prove spark intensity only test spark plug does that.
when hot? what's hot?

does that mean out door too hot or engine coolant.?
we have 85f temps now. air temp.. but you?
so... no location stated. make any help at all hard.
hot engine no starts.
1: engine gets hot and looses compression
2: lost spark. (yes, the Cam sensor can fail hot block. yes)
3: lost fueling, or floods,?
the tests are simple and do them in order to save huge wastes of time and guessing and huge wasted cash on useless parts.

you could just watch scotty. it gets this right. (skip ad)
http://www.youtube.com/watch?v=064Ilsz8Fzg&NR=1&feature=fvwp

Oct 13, 2013 | Cars & Trucks

1 Answer

1993 jeep grand cherokee loses power at operating temp.


ever do a real tuneup this decade
spark parts, and filters. that be first
and make sure the hot engine (sized not stated) is really hot.
180F or more, and holds, it must reach normal spec, temp.
or the ECU brain will not do its job right.
the only clue I have here is skips
skips must mean misfire.
there are over 50 causes of misfire.
bad spark plugs tops the list.
and all spark parts there, cap/rotor,wires set this OLD.
car is old , needs a major tuneup

they to forget all that other stuff, and elaborage
what skips means.
i guess never cold does it skip.

taCH DROPS TO ZERO BUT engine not heard to stall?
if yes, electrical problems or CKP failing?
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Mar 07, 2017 | 1993 Jeep Grand Cherokee

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My vehicle stalls on acceleration


Check that the intake is clear, no blockages(ie paper in the intake or a blocked air filter) if clear feel the coil, is it very hot? Does it only happen when the engine is at operating temp? Coils break down under heat and you loose spark under load(ie acceleration) or maybe you have a blocked fuel filter or pickup filter in your tank which would cause fuel starvation! These are the areas to investigate!

Oct 08, 2010 | 1992 Toyota Corolla

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1995 Lexus SC300 looses power as temp increases.


could be clogged cats or may even be bad crank sensor.

Jul 06, 2009 | 1992 Lexus Sc 300

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Temp control knob was loose. Tightened it, but temp knob is inconsistent. How do I get it back?


the knob hasworn of the teeth of the control knonb get some super glue glue the knob back on wait a 1/2 hour and your back operating and rate me so I will give you more information.

Jun 29, 2009 | 2002 Toyota Highlander

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1985 Ford Ranger will not start when damp and cool outside.


possibly distributor cap getting wet. Try this. When it's not starting, remove distributor cap and dry inside and outside with hair dryer on warm setting. See if it starts then. If yes, replace cap and rotor and make sure plug wires are clean.
If it still doesn't start, you may be getting mositure in a wire connector that operates spark to plugs.

Are you getting spark at plugs when it own't start?
Check by getting a spark plug and plugging a spark plug wire into it and grounding the side of the plug. crank engine and watch for spark at gap.

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