Question about 1993 Jeep Grand Cherokee
Pulse count modulator, there is a half circle of steel in the distributor, when the steel half circle passes a hall effect sensor ( pcm ) it tells the engine to fire on cylender number one. and the other half of the steel circle exits the hall effect sensor it tells it how fast it was turning. so all the other spark plugs fire at the correct time. The other part is that the pcm cystem is part of a coil that is wound around plates of steel if the plates of steel get wet (over time they tend to rust ) the rust swells the steel and the coil gets broken by the expanding rusty steel. so replace the coil portion of the distributor. just follow the singel wire to the block of steel ( coil is encased in rubber or molded plastic. ) but the coil is breaking or getting stretched and bearly touching and when it gets hot the metal expands too. and it fails. just follow the singel wire inside thedistributor to its coil : replace that and your good to go.
Posted on Feb 21, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 15, 2014 | 1999 Audi A6
Oct 03, 2013 | Cars & Trucks
Sep 03, 2012 | 2001 Ford Taurus
Aug 02, 2011 | 2002 Toyota Camry
Mar 31, 2011 | 1990 Dodge Dakota
Oct 06, 2009 | 2003 GMC Envoy Xl
Jun 05, 2009 | 2001 Kia Rio
Oct 16, 2008 | 2002 Toyota Camry
325 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: