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96 caravan need help please
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m2934
New User
Jun 13, 2011, 6:41 PM
Post #1 of 4
(1259 views)
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96 caravan need help please
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96 caravan with a 3.3 liter engine. Few weeks ago it would turn over fine, but would not start. replaced cam sensor, crank sensor, coil pack? and battery. still will not start(problem #1 ) and also now the engine cranks really slow(new problem #2) starter was tested and is good. battery and starter cables have been cleaned.
codes when checking with the ignition key are 12(battery has been diconnected) and 55 (end of codes). only had these codes when I replaced the above mentioned parts,which autozone tested and came up bad. no new codes .
I would be greatfull for any help or direction
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speed
User
Jun 13, 2011, 7:02 PM
Post #2 of 4
(1257 views)
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Re: 96 caravan need help please
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cranking really slow leads me to believe imo that your battery is draining from all the starting attempts. as for your crank/no start problem, here is a posting to read.
All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.
Every engine requires spark, fuel and compression to run. That's what we have to look for.
These are the basics that need to be tested and will give us the info required to isolate a cause.
1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.
2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.
3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.
4) If all of these things check good, then you would need to do a complete compression test.
Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
perform the tests and post your results here.
GM ASEP 26 SCC Milford ASE certified in Brakes and Electrical on Thursday April 5th 2012
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m2934
New User
Jun 13, 2011, 7:16 PM
Post #3 of 4
(1256 views)
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Re: 96 caravan need help please
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My problem is the no spark. im working with 3 different batteries all of which have been charged used and charged again. The slow crank is even happening with a brand new and tested battery. starter is good and cables at both ends have been cleaned. i have fuel pressure and compression hasnt been checked but im still on the no spark issue
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 13, 2011, 7:41 PM
Post #4 of 4
(1252 views)
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Re: 96 caravan need help please
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You need to do all of those tests and find out what besides spark is missing.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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