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Code 43 On 94 C1500

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Ok i'm going to bring this thread back from the dead for my code 43. L03/CFI tech and other performance enhancements. One time I thought it had flashed the ECM failure code, but after several re-reads I determined it was only flashing the O2 sensor fail code. I'm going to look at it again this weekend and try to get it figured out. this content

ranger1958 Full Member Joined: Aug 11, 2011 Messages: 21 Likes Received: 5 Trophy Points: 0 #10 ranger1958, Sep 24, 2011 Dirt rider and chevy chase,thank you both. In ecm? Automotive Network, Inc., Copyright ©2016 Gain extra benefits by becoming a Supporting Member Click here find out how! Will take care of the person who can email me this info.

Code 43 Obd1 Chevy

Thread Tools Search this Thread 03-27-2010, 06:54 AM #1 1988-305-tbi Senior Member Join Date: Mar 2004 Location: SoCal "Riverside" Posts: 550 code 43, ESC/ knock and jumping spark? I can tell you its not mounted on motor. The sensor, in response to engine knock, sends a signal to the module and from there to the ECM, located in the passenger compartment.

Take a close look at ignition wires for bad insulation or damage and the rest of ignition system for loose grounds, or bad components. //RF you said excessive noise...do you think On the 1993-95 trucks, the ESC is a removable part of the ECM called a MEMCAL. We use cookies on this website. Code 43 Knock Sensor Circuit I am still getting code 43 - the truck is 1993 K 1500 4wd Suburban with 5.7 - Any help would be greatly appreciated.

eng advances at idle,under load-let the timing battle begin. Gm Code 43 Fix Edit, In view of your mentioning the shorting leads you discovered were actually for light, I wouldn't be surprised if your problem were a connection on the back of the in-cab You need to measure all the voltages to try to see what is actually happening. If your base timing is too far retarded (factory spec is zero, most people can get away with 2-4 degrees of advance) or you're running super premium fuel (your engine is

briansmobile1 84,769 views 28:07 Tip Clip: Knock Sensor Testing - Duration: 7:08. Code 43 Chevy Truck My mechanic believes its an electrical problem and if it is it's going to cost me a fortune because I know nothing about electrical. The car had 2 electric radiator fans. Originally Posted by Savage Sierra I cleaned all the terminals and what not, I know this is probably not related but I also did a Sea Foam treatment.

Gm Code 43 Fix

The one fan was supposed to come on at 215 or 220 and cycle off at 195 or so. http://www.techsupportforum.com/forums/f155/code-43-chevy-truck-176312.html However, if you have old or 'lazy' O2 sensor ECM might be forcing fuel mixture too rich (higher voltage) or too lean (low O2 voltage). Code 43 Obd1 Chevy I'm not sure which fixed it but I'm not complaining either. Gm Code 43 Esc Failure Wiring defects like that, kind of point to poor design and visual inspections not being good enough.

i'm thinking it maybe the knock sensor/ bad distributor, thanks again for the replys __________________ THE MODS Suspension: 18X9.5" hyper black c6 wheels with 265/40/18, 275/40/18 michelin PS2, AGR 12.7 to http://allsoftwarereviews.com/code-43/code-43-ati.php Code 43 is set because of an electrical issue in the system, NOT because of a misfire.If your wiring is good, then you need a PCM more then likely, according to You can also monitor it with a scan tool that shows live data, but the transmission has to be in gear while you have someone rap on the exhaust manifold, while If I understand it correctly... 94 Chevy Code 43

Richard 06 Silverado ISS / 06 Silverado SS / 06 300C SRT8 / 06 Magnum SRT8 EmailReport spiderhole Contributor Posts: 292 Loc: Radnor, PA Reg: 09-22-07 User InfoSend Private Can you use a meter (if not it is time to learn!!) and measure the voltage across the battery terminals whilst the vehicle is standing without the engine running and then No, create an account now. have a peek at these guys Working...

Thanks for the advise.. Code 43 Chevy Tbi That kind of thing should not happen! It shouldn't, not even with 87.

Talas Sgt25703-07-2015, 12:38 PMThere is a dark blue wire coming through a metal conduit rear of the starter.

Facebook 03 Tahoe Z71- '09 Z71 wheels, amber DRLs, 1.5" crank, more to come 95 Impala SS- DGGM, a few mods 74 Impala - 350/TH350/Edelbrock/Holley/duals/BFGs/Rallys. 93 Blazer- 237K, blocks/crank/Bilsteins/Slomaster/14sf/u-bolt flip. Ive had plenty of problems with the ESC system, and like i said, 99% of the time its bad wire routing/connections (especially on high performace ignition systems) hope this helps, you I assume its at zero. 1988 Chevy K1500 5.7L 700r4 2008 BMW 335xi coupe, 6 speed twin turbo 2006 Audi TT convertible 1.8 turbo 2001 Land Rover Discovery II I'm trying 95 Chevy 1500 Code 43 This could also explain your dash light indication.

New and old motors both had/have 2 dead cylinders. Learn more You're viewing YouTube in English (United Kingdom). I was able to slide in a new piece of cable protector and pull the bundle away from the linkage and all is well again. check my blog All rights reserved.

scan tool readings are steady and normal,except the knock signal go's thru the roof(ok not that bad) under load. Only took 13 years to become obvious. :-/ Then I had a 1987 IROC Z Camaro. Cody the Car Guy 545,535 views 15:08 Reading OBD-1 Codes on GM 1982-1995 - Duration: 5:28. Posting Quick Reply - Please Wait « Previous Thread | Next Thread » Thread Tools Show Printable Version Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Posting

I know this advances or retards timing when a ping, knock or other noise signals the ECM. The PCM performs all ECM functions and also provides electronic control for the transmission. the voltages are good and consistent to the knock sensor. Back to top #10 timmyleejohnson timmyleejohnson Enthusiast Member 35 posts Name:Taylor Location:South Florida Gender:Male Drives:1994 GMC Suburban Posted 18 November 2013 - 09:38 AM Oh boy.

EmailReport someotherguy Moderator Posts: 28031 Age: 46 Loc: Texas Reg: 08-01-03 User InfoSend Private TopicView Profile 01-28-10 01:05 PM - Post#1851454 In response to spiderhole Might have been knocking Thanks If you used a jumper on the ALDL connector to get the code, are you sure you counted the flashes correctly? Picture would be great. They went into the PCM in '93 on automatic-equipped trucks; were still apparently external on the standard-equipped versions up to '94 possibly '95.

Password Human Verification In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained Quote: Originally Posted by qldit Good Afternoon JENSPORT, well done finding that problem! The service engine light came on then went out and would come on again. One time I thought it had flashed the ECM failure code, but after several re-reads I determined it was only flashing the O2 sensor fail code.

I appreciate the help. Knock Sensor System All gas engines are equipped with a knock sensor system. Options Quote message in reply? also, disconnect the battery for a few minutes/erase the code.

Not sure where esc module is.