Single Turbo RX-7's Questions about all aspects of single turbo setups.

1993 Rx7 cant start after changing out harnesses

Thread Tools
 
Search this Thread
 
Old 04-30-20, 08:45 AM
  #1  
Full Member

Thread Starter
iTrader: (3)
 
wickedywick's Avatar
 
Join Date: Jun 2006
Location: RVA
Posts: 244
Received 2 Likes on 2 Posts
1993 Rx7 cant start after changing out harnesses

I had the motor rebuilt at Angle Motorsports. Mike Vargas recommended I get a new motor harness so I went RYWIRE. After that I noticed the previous owner did a hack job on the chassis harness which had melted wires and poor splices from the ECU all the way to the fuse box. (surprised car ran and it didnt catch fire at the time). so I decided to get a lower mileage one in good shape from a shop that had one left over.

So fast forward to today.
I run the POWERFC
I see the RPM's on the POWERFC screen around 180rpms while cranking
New RYWIRE harness installed and a used chassis harness also from 1993 5 speed
Motor Cranks
I hear fuel pump cuts on
Fuel pressure with Ignition ON is at 40psi and bounces around while cranking 40-50psi
Coil Packs with Ignition ON have 12V
Fuel Injectors with Ignition ON have 12V
Installed new spark plugs and decided to de-flood motor just in case. Pretty clean.
Looked over all the fuses a million times

What else should I check?

Old 04-30-20, 11:04 AM
  #2  
Full Member

Thread Starter
iTrader: (3)
 
wickedywick's Avatar
 
Join Date: Jun 2006
Location: RVA
Posts: 244
Received 2 Likes on 2 Posts
Decided to actually look at spark plugs for spark and negative. PowerFC ECU the only thing that would actually send the signal for spark?
Old 04-30-20, 11:32 AM
  #3  
Talk to me....

iTrader: (2)
 
Uncle Hungry's Avatar
 
Join Date: Sep 2007
Location: 600' up
Posts: 1,057
Received 51 Likes on 35 Posts
Check your igniter.
Old 04-30-20, 01:36 PM
  #4  
Full Member

Thread Starter
iTrader: (3)
 
wickedywick's Avatar
 
Join Date: Jun 2006
Location: RVA
Posts: 244
Received 2 Likes on 2 Posts
man, i had the blue and white plugs near the ecu reversed! Started right up!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dream3rdgen
3rd Generation Specific (1993-2002)
10
11-26-15 12:46 AM
Mikeloranger1993rx7
3rd Generation Specific (1993-2002)
3
04-10-10 08:16 PM
turboefini88
Megasquirt Forum
11
04-25-07 10:16 PM
93 R1
3rd Generation Specific (1993-2002)
9
10-19-03 02:31 PM



Quick Reply: 1993 Rx7 cant start after changing out harnesses



All times are GMT -5. The time now is 03:50 PM.