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Search: Posts Made By: jtec
Jeep Forums: KJ Liberty Forum   Yesterday, 03:39 PM
Replies: 8
Views: 179
Posted By jtec
FYI: What I find interesting All 4 codes are...

FYI: What I find interesting All 4 codes are same issue* - and use the same trouble shoot tree.
That and same issue with 2nd PCM has me thinking its NOT the PCM**.

These o2 sensors work...
Jeep Forums: ZJ Grand Cherokee Forum   Yesterday, 12:15 PM
Replies: 5
Views: 114
Posted By jtec
key on eng off (KOEO) both wires at coil should...

key on eng off (KOEO) both wires at coil should be 12v?

Unplug coil - is there 12v on DK/GN wire/
Is the other wire grounded?

CKP is Crank position sensor.
Jeep Forums: TJ Wrangler Technical Forum   Yesterday, 10:48 AM
Replies: 6
Views: 216
Posted By jtec
what makes you think its a coil RAIL? :) Be...

what makes you think its a coil RAIL? :)

Be sure to get the boots, springs etc for the new coil rail... often included BUT best to ck.
Jeep Forums: ZJ Grand Cherokee Forum   Yesterday, 10:33 AM
Replies: 5
Views: 114
Posted By jtec
you have no spark at coil? is there 12v at coil...

you have no spark at coil?
is there 12v at coil - DK/GN wire?

At the CKP is there @5v (or 8v) at sensor?
Jeep Forums: WK2 Grand Cherokee Forum   Yesterday, 08:58 AM
Replies: 5
Views: 197
Posted By jtec
thats going to be repaired, suggest you use a...

thats going to be repaired, suggest you use a jeep dealer. You want a road test when picking it up after repairs.

DOn't forget "depreciated asset" compensation.

Be sure the baby is seen by...
Jeep Forums: WJ Grand Cherokee Forum   Yesterday, 08:51 AM
Replies: 2
Views: 76
Posted By jtec
working at the oil pressure sensor, unplug it, 3...

working at the oil pressure sensor, unplug it, 3 wires what is voltage on center wire (GY/YL)

if @5 volts suspect short in wires. As mentioned above use a OEM gauge.
Jeep Forums: XJ Cherokee Technical Forum   Yesterday, 07:53 AM
Replies: 6
Views: 372
Posted By jtec
A fuel pressure test and a fuel pressure leak...

A fuel pressure test and a fuel pressure leak down - Key On Eng Off (KOEO)

How did old plugs look - Wet ,Black, Dry, tan?
Any issue with ECT - gauge working?
You checked for spark - When it...
Jeep Forums: KJ Liberty Forum   06-25-2019, 03:47 PM
Replies: 8
Views: 179
Posted By jtec
if not to late keep your original PCM. Scan...

if not to late keep your original PCM.

Scan and post ALL codes. Scans are free at many auto part stores. yes FREE.


FYI: You are aware that a code does NOT indicate a component needs...
Jeep Forums: TJ Wrangler Technical Forum   06-25-2019, 02:42 PM
Replies: 7
Views: 169
Posted By jtec
confirm p0168. The p0516 is battery temp...

confirm p0168.

The p0516 is battery temp sensor low voltage, pretty straight forward trouble shoot - start insp of sensor wirning,

p0016 is the bane of the 05 06 wranglers. A known issue with...
Jeep Forums: General Jeep & Off-Road Equipment   06-25-2019, 11:32 AM
Replies: 1
Views: 64
Posted By jtec
year model engine etc. have you checked...

year model engine etc.

have you checked your serpentine belt?
Jeep Forums: WK Grand Cherokee & XK Commander Forum   06-25-2019, 11:30 AM
Replies: 4
Views: 133
Posted By jtec
POST all CODES. Have you added a remote...

POST all CODES.

Have you added a remote start, alarm or ANY electrical modifications?
Jeep Forums: WJ Grand Cherokee Forum   06-25-2019, 11:27 AM
Replies: 1
Views: 79
Posted By jtec
LMGTFY ...

LMGTFY

https://www.youtube.com/watch?v=K-cbBPXXBgg
Jeep Forums: XJ Cherokee Technical Forum   06-25-2019, 10:20 AM
Replies: 10
Views: 295
Posted By jtec
only #6 black - fuel I would suspect an injector...

only #6 black - fuel I would suspect an injector issue.

to get a start I would add a can of SEAFOAM an in injector cleaner but we will need to ck this further.

You need to check for codes, a...
Jeep Forums: TJ Wrangler Technical Forum   06-25-2019, 10:15 AM
Replies: 7
Views: 137
Posted By jtec
as mentioned jumping the CPPS will bypass. ...

as mentioned jumping the CPPS will bypass.
Attached diagram should help.
let us know.

FYI the CPPS is part of clutch 'master' or hydraulic cylinder.
Jeep Forums: XJ Cherokee Technical Forum   06-25-2019, 09:12 AM
Replies: 2
Views: 80
Posted By jtec
Fuel increase? did you do the math - ...

Fuel increase?

did you do the math - lots of rounding of # but a 10cent increase is 2$ a tank, a tank a month would be @25$ a year, Is tht really worth reinventing the wheel. Rebuild the...
Jeep Forums: TJ Wrangler Technical Forum   06-24-2019, 03:38 PM
Replies: 8
Views: 233
Posted By jtec
I am skeptical but if they guarantee the repair...

I am skeptical but if they guarantee the repair case closed.
Jeep Forums: WJ Grand Cherokee Forum   06-24-2019, 01:27 PM
Replies: 2
Views: 123
Posted By jtec
Try a free scan - many auto part stores do as a...

Try a free scan - many auto part stores do as a customer service, not all trans codes will show doing the key on off trick, so a scan is advised.

THe OD (4th) are the same on the 42RE, they...
Jeep Forums: TJ Wrangler Technical Forum   06-24-2019, 01:15 PM
Replies: 8
Views: 233
Posted By jtec
lets regroup - you only have 1 code p0138* ? ...

lets regroup - you only have 1 code p0138* ?
I am unsure how we would reach a bad PCM based on that 1 unresolved issue. Is there more to this story? What is reference to bad Cat adding...
Jeep Forums: XJ Cherokee Technical Forum   06-24-2019, 11:12 AM
Replies: 10
Views: 295
Posted By jtec
this is takiing awhile but its a learning curve ,...

this is takiing awhile but its a learning curve ,
did you try the key on off trick* to get codes?
https://www.youtube.com/watch?v=m6e1_bigL4g

Now that should get some info, not as complete...
Jeep Forums: TJ Wrangler Technical Forum   06-24-2019, 09:35 AM
Replies: 7
Views: 222
Posted By jtec
outdoors the mess is made, beer is cold, hose...

outdoors the mess is made, beer is cold, hose is in hand - might want to back flush the heater core -
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