Can the engine be started without the drivetrain connected?
Racer
Joined: Jun 2004
Posts: 270
Likes: 67
From: Montana
Refer to post #18. Again no RPM equals no crank position ref signal. Without that ref, the PCM doesn’t know what position the motor in, so no spark. You mentioned you saw bare wire...If the insulation on the wiring is worn/crack/missing you need to fix it. Use a multimeter to check the wiring...
Thread Starter
Night Owl for life
Joined: Nov 2003
Posts: 24,721
Likes: 4,557
From: Bugs Bunny should'a made a left turn here
Well after nearly a year hiatus, I recently started working on my car again.
I found that once I hooked up the trans and diff, my engine turned over and started as normal.
Not too sure why this is, but in my case the engine would not turn over without having the rest of the drivetrain connected.
I am just relieved that I don't have to keep chasing problems and can finally get it back on the road
I found that once I hooked up the trans and diff, my engine turned over and started as normal.
Not too sure why this is, but in my case the engine would not turn over without having the rest of the drivetrain connected.
I am just relieved that I don't have to keep chasing problems and can finally get it back on the road
Le Mans Master
Joined: Jul 2010
Posts: 6,005
Likes: 723
Well after nearly a year hiatus, I recently started working on my car again.
I found that once I hooked up the trans and diff, my engine turned over and started as normal.
Not too sure why this is, but in my case the engine would not turn over without having the rest of the drivetrain connected.
I am just relieved that I don't have to keep chasing problems and can finally get it back on the road
I found that once I hooked up the trans and diff, my engine turned over and started as normal.
Not too sure why this is, but in my case the engine would not turn over without having the rest of the drivetrain connected.
I am just relieved that I don't have to keep chasing problems and can finally get it back on the road
Le Mans Master
Joined: Aug 2005
Posts: 7,392
Likes: 216
From: Merritt Island, FL
A moot point now -- but when I just did clutch/trans/diff job in my Z06, I couldn't get it started afterwards, because I left the harness connector for the fuel pump unplugged (on RH side of trans).
1st Gear
Joined: Mar 2023
Posts: 1
Likes: 0
Question
Originally Posted by Bill Curlee;[url=tel:1602395418
1602395418[/url]]YES YES YES,, I did just that. Installed a NEW clutch and wanted to make sure that the SPEC Flywheel was properly OFF SET BALABCED and the engine had no abnormal vibrations. Worked like a CHAMP. My neighbors didn't like the 10 PM light off (OPEN HEADERS) but I did. Mmmmmmm,,,,,, SWEET MUSIC! Especially the "quick" rev to 6000 RPM 
NO VIBRATIONS!! 
Sorry neighbors... 
There is a VERY thin black wire at the block ground (behind the battery ground wire eyelet) that is the PCM ground. Make sure it is connected to that block ground. The wire is small but the eyelet is large and it suppose to fit on that ground bolt for the neg battery wire to the engine. When you remove the drivetrain, you disconnect the main connector at the rear of the tunnel. Make sure that it is connected.
Do you hear the fuel pump PRIME at key on?
Do you have fuel pressure at the Schrader valve on the front of the fuel rail (drivers side)?
Do you have spark?
All questions to answer. The Crank Position Sensor is inboard to the side of the starter. Make sure that you didn't damage the connector and or wiring on that sensor. If you use the internal DTC reading routine, it will tell you if the CPS is bad. .
NO VIBRATIONS!! Sorry neighbors... There is a VERY thin black wire at the block ground (behind the battery ground wire eyelet) that is the PCM ground. Make sure it is connected to that block ground. The wire is small but the eyelet is large and it suppose to fit on that ground bolt for the neg battery wire to the engine. When you remove the drivetrain, you disconnect the main connector at the rear of the tunnel. Make sure that it is connected.
Do you hear the fuel pump PRIME at key on?
Do you have fuel pressure at the Schrader valve on the front of the fuel rail (drivers side)?
Do you have spark?
All questions to answer. The Crank Position Sensor is inboard to the side of the starter. Make sure that you didn't damage the connector and or wiring on that sensor. If you use the internal DTC reading routine, it will tell you if the CPS is bad. .
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