Question about 1985 Jeep Cherokee
Just installed a crate GM 2.8 Liter engine in a 1985 Jeep Cherokee. Engine fired up, I set the dwell, timing, and adjusted the transmission linkage. Drove the vehicle around to validate the working condition. Was happy.
The next day I went to turn over the vehicle, and it would not start. Found out I was getting not spark. I have gone through a new distributer, replaced the ECM four times (had them checked), replaced the coil, replaced the wiring harness leads to the coil, distributer, placed more grounding straps on the engine to body, and still not fire.
I have 12 volts to the correct side of the coil. Not sure where the TPS is, checked the troubleshoot tips of both Chilton, and Hayes, and wonder what I am missing. Do not think the computer is down. Something is not sending voltage to the computer to telll the ECM to work.
Have any ideas. I have been thinking of placing a points, vacuum advanced old school system in it. But wonder if there is something I am missing.
Does a 85 have a ECU unit ??? sounds like it could be the switching transistor thats either under the coil or inside the distributor should look like a black plastic casing with 3/4 wires running to it then to the coil look at this first as often motor runs ,stop for a quickie somewhere and jump back in and engine will not fire up ,classic symptons
Posted on Dec 20, 2008
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:
May 31, 2016 | 2000 Jeep Grand Cherokee Laredo
Dec 07, 2014 | 2004 Jeep Grand Cherokee
Dec 23, 2013 | 1993 Jeep Grand Cherokee
Locate the spark plug wires in the Cherokee cylinder head. In the 4.0 liter engine, the spark plugs are below the coil rail assembly. On the 4.7 liter engine, the spark plugs are located under each corresponding engine coil.
Read more: How to Replace Spark Plugs in a Jeep Grand Cherokee ' eHow.com http://www.ehow.com/how_4484626_replace-spark-plugs-jeep-grand.html#ixzz27zi6736d
Sep 30, 2012 | 2000 Jeep Grand Cherokee
Aug 11, 2011 | 1985 Jeep Cherokee
May 01, 2011 | 2006 Jeep Grand Cherokee
Jun 09, 2010 | 1990 Jeep Wrangler
Dec 27, 2009 | 1995 Jeep Cherokee
Sep 06, 2009 | 1997 Jeep Grand Cherokee
Jun 27, 2009 | 1994 Jeep Grand Cherokee
382 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: