How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask coreyd87 Your Own Question
coreyd87, ASE Certified Technician
Category: Car
Satisfied Customers: 10
Experience:  10 year experienced ASE certified (A) technician knowledgeable with the diagnosis and repair of all makes and models.
Type Your Car Question Here...
coreyd87 is online now
A new question is answered every 9 seconds

cherokee: After touching a grounded wire to the IGN/14 hole

This answer was rated:

After touching a grounded wire to the IGN/14 hole in my fuse box from my temp plug on motor my jeep wont start. It turns over and I have all my lights and gauges but no fire. Also there are codes 5 in total reading high voltage to tps,batt temp,o2,fuel pump and one other dont remember. I did change all the fuses in the cab and moved around the ones under hood. also pulled the plug from coil and tested there is no power going to coil? Not sure were to go from here maybe change the cps but woundn't kill all power to the coil plug I dont think?

hello this is corey thanks for using just answer.

it sounds like you may have sent a voltage spike to the ecm.
if all your fuses are ok,and its giving you codes for multiple sensors you should test ecm or replace it
Customer: replied 3 years ago.

Can I run a direct hot to the coil to see if the ecm is good or will I hurt something else

Customer: replied 3 years ago.

Can I hook a direct hot to the coil to see if the ecm is good by making run or will I hurt something else

you could possibly damage other components. if you have a multimeter you can check for voltage from the cam sensor inside the distributor. there should be a 3 wire connector coming from the distributor. you would connect the multimeter set to dc voltage between the purple wire and black/blue wire. you should see between 0-5 volts while engine is cranking. then connect between the purple and black/blue wire, you should see 5 volts. if there is more voltage then 5 then suspect bad computer

you could also check the voltage at the throttle position sensor on the throttle body since you have a code for it. if its more than 5 volts or no voltage suspect a bad ecm.

Customer: replied 3 years ago.

Sorry cant rate because I dont just have a ecm to put in my jeep. I oredered one and should be here tuesday afternoon i will install and then either leave feed back or ask another question!

No problem let me know how it goes
coreyd87 and other Car Specialists are ready to help you

Related Car Questions