Question about 1990 Cadillac Deville
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Posted on Jan 02, 2017
Under vehicle, driver side, below seating area, front
of fuel tank, mounted on chassis in fuel lin.
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Posted on Jun 11, 2009
To avoid confusion, remove and tag the spark plug wires one at a time, for replacement.
If a distributor is not keyed for installation with only one orientation, it could have been removed previously and rewired. The resultant wiring would hold the correct firing order, but could change the relative placement of the plug towers in relation to the engine. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your book to reflect how your engine is wired.
4.5L and 4.9L EnginesEngine Firing Order: 1-8-4-3-6-5-7-2 Distributor Rotation: Counterclockwise
Hope helped with this (remember rated this help) Good luck.
Posted on Nov 10, 2009
Sounds like the engine is idling to high. There is a procedure that you must go through to set it. Reply and I will let you know how to set it.
Posted on Apr 06, 2010
First, I would determine it is bad. I have a 1990 Cadillac Sedan Deville, and sometimes it doesn't turn over. But, if I toggle the switch a few times or up to 5 times, it starts to turn over and the car starts.
I have the same problem with a 1997 Cadillac Deville.
If you are set on changing it, here is a picture and instructions on how to test:
Starter TESTING Voltage Drop Test Fig. 1: Schematic of a voltage drop test
NOTE: The battery must be in good condition and fully charged prior to performing this test.
Remember to disconnect the battery and remove the wires from the starter at the hex nut.
Then, remove the 3 or so bolts that hold the starter on using an extension and ratchet if necessary.
Hope this helps.
Posted on Jul 05, 2010
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