Question about 1994 GMC Safari

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94 gmc safari having problems with the spark plug wires how to replace them

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Pull off your dog box and replace them one at a time. Get the AC Delco wires, and they will last longer also.

Posted on Mar 11, 2009

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1 Answer

No fire in coil pack.


Was the timing chain damaged ?
Did you have spark from the coil before you replaced the other parts ?
Do you have battery voltage on the positive side of the coil with the key on and in crank mode ?
Is the coil wire not sparking, or are you not getting spark at the plugs ?
Is the distributor rotor turning when you crank the engine ?

Jul 20, 2012 | 1994 GMC Safari

1 Answer

My 94 gmc safari van wont crank until i clean the soot off the plugs then runs 10 minutes dies wont crank until i clean soot off plugs it wont stay running whats wrong?


just a guess but check if you have the right spark plugs for you van. spark plugs have a heat range. the right plugs for your van are AC R 43TS If you have a V6 engine. Also check your plug wires or just replace them. I would also check distributor cap and rotor. these parts are inexpensive, I would just replace them and see if that fixes the problem. if you did this already I don't know what to tell you know I will research my owners manual if I find something else I will pass info to you.

Nov 12, 2011 | Cars & Trucks

1 Answer

Had the spark plugs and plug wires changed on my 1994 GMC Safari minivan, and now it runs very rough. If I stop, the engine shuts off. Backfires a lot also. The whole van shakes bad going down the road....


If your Safari did not expecience these systoms prior to you changing the plugs and ignition wires, then you may have crossed two or more of these wires when they were repalced.

Feb 20, 2011 | 1994 GMC Safari

1 Answer

Diagram of the spark plug wire order of a 94 GMC safari


try this diagram and hopefully it will be of help to you.


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May 10, 2010 | 1994 GMC Safari

1 Answer

How to lineup the spark plug wires on 1999 GMC


simple if the wire are wrong in order this is not good so do this get a book aor got to the library and find the book and find the firing order some car have the numbers stamp on top of the block

Feb 19, 2010 | 1999 GMC Safari

1 Answer

I have a 94 gmc safari wont start have 60 psi fuel good spark new plugs wires cap, rotor this p.o.s is getting to be a pain


Check the Ignition module, it's located under the rotor in the distributor cap. It's common for condensation to form there causing corrosion. Start with checking the wires for corrosion and then check the Ignition Module. Auto Zone sells them for around $45.00 and will have the step by step instructions to replacing it. Good luck and here is a link for you.

http://www.troublecodes.net/GM/

Dec 04, 2009 | 1994 GMC Safari

1 Answer

Replacing Spark Plugs


Buy repair manual

Oct 09, 2009 | 1994 GMC Safari

2 Answers

Ihave problem with 92 gmc safari it drives sometimes during driving car buck like it.s out of gas . I'll turn igntion on and off real quick. and car drives ok. Ihave replaced fuel pump.


sounds like a bad plug wire, take a squirt bottle while the car is running then spray the wires down they should start arcing, also when you replaced the fuel pump did you replace the fuel filter

Apr 29, 2009 | 1992 GMC Safari

1 Answer

Spark plug issues on GMC Safari early 90's.


The simple fix would be to get a ratchet and spark plug socket and tighten them. First remove the plug wire from the plug and then use the socket to tighten them one at a time so you do not get the wires mixed up as to which one goes to which spark plug. Tighten them slowly to avoid breaking one of them but do not over tighten them either.

Mar 20, 2009 | 1994 GMC Safari

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