When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So I have hit a stand-still in my Gen V LT swap into my 1984 Suburban. Was going to go a conventional LS swap but got a smoking deal on the drivetrain from a 2016 Silverado so figured what the heck I'd go that way. I'm a fabricator and body guy, not an engine guru so I'm kinda just BS'ing my way through this swap.
Engine is a 5.3L L83 mated to a 6L80E.
PSI Conversion Harness (got this before I realized I wanted to use a Lokar ESS shifter w/ tap shifting)
Speartech tap shift switch box
Speartech reverse light CAN box
Speartech ECM
Speartech tuned TCM
Lokar ESS shifter
Aeromotive Phantom In-Tank fuel pump kit w/ aeromotive EFI regulator set at 72psi
Engine has brand new injectors, fuel rails, and plugs.
It is running like **** and the only code that my snap-on scan tool is picking is a P135A - Ignition Coil Supply Voltage Circuit Bank 1. My first thought is to just get new coil packs, but since I'm not getting a coil specific code I have no clue how to test and see if it's just one coil pack. I'd rather not dump $250 into new coil packs and wires if it's some simple computer issue.
Not sure if I can be much help, I have not done a Gen V swap, but check to see if you have 12v at the coil plug, on the pink wire.
Nice looking Suburban.
It's likely not the coils unless they were physically damaged from the donor vehicle. Coil resistance can be checked easy enough though- there should not be much variance between coils. Also don't forget the good old fashioned trick of unhooking plug wires and hooking them to a spark plug just touching the engine or grounded metal and watching for spark as the engine turns over. The above advice about checking voltage is good too.
Not sure if I can be much help, I have not done a Gen V swap, but check to see if you have 12v at the coil plug, on the pink wire.
Nice looking Suburban.
Stampede.
First thing I tested was that. Have the same voltage at all 8 coil plugs on the pink wire of 12.186V.
Originally Posted by JacobJ
It's likely not the coils unless they were physically damaged from the donor vehicle. Coil resistance can be checked easy enough though- there should not be much variance between coils. Also don't forget the good old fashioned trick of unhooking plug wires and hooking them to a spark plug just touching the engine or grounded metal and watching for spark as the engine turns over. The above advice about checking voltage is good too.
Let us know!
No spark when it turns over. It isn't dumping fuel in bank 1 either. Put new wires all the way around and coils on bank 1.
Could it be the AFM acting up? I was told that you just leave it unplugged with the PSI harness.
p135a.enginetroublecode.comP135A DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set. P1351 CHEVROLET - Ignition Control Module Circuit High Voltage
p135a.enginetroublecode.comP135A DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set. P1351 CHEVROLET - Ignition Control Module Circuit High Voltage
Which is it?
All my snap-on scanner is picking up is P135A - Ignition Coil Supply Voltage Circuit Bank 1. If I go into my engine data Bank 1 is off. Haven't removed the timing chain and it's factory so I doubt it's a camshaft timing issue
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.
7 Most Reliable High-Performance Engines GM Has Ever Built
Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
L83 Swap HELP! 
