How do ya fix code 42 on a gm truck 1992 JustAnswer How do ya fix code 42 on a gm truck 1992 Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. How to fix engine code 42 on a 1992 chevy s10 JustAnswer How to fix engine code 42 on a 1992 chevy s10. Code 42 means the ECM has seen an open or short to ground in the EST or bypass circuits. This test confirms Code 42 and that the fault causing the code is present. Checks for a normal EST ground path through the ignition module. An EST CKT 423 shorted to ground will also read less than 500 ohms; Trouble code 42 Car Repair Questions Answered for Free ... Trouble code 42. JAMMER ... OK Jeff, will email ya the procedure just in case and do your best to get an operational timing light. Cya tomorrow! ... 1992 Chevy Truck I Have A '92 C k Pickup Giving A... I Have A 1992 C k Pickup Givng A Soft Code 24, What Does This Code Mean? 1992 GMC Sierra SES Code DTC 42? | Yahoo Answers Answers. When the engine speed exceeds 400 RPM, the ECM sends a BYPASS signal to the ignition module which switches the timing to ECM control. The ECM calculates what the timing should be then "tells" the ignition module via the EST circuit. An open or ground in the EST circuit will stall the engine and set a Code 42. SOLVED: What is code 42 and how do you fix it on a1992 gmc ... SOURCE: 1991 chevrolet silverado truck engine hesitates, Trouble Code 44 indicates that the O2 sensor is showing a persistently high exhaust oxygen content (lean), despite the efforts of the ECM to increase ... Code 42: Electronic spark timing (EST) circuit fault. Posted on Feb 18, 2009 how do you fix a code 42 on a gm? | Yahoo Answers Answers. Best Answer: The dealer, that code is a "copywrite" code. Meaning its a protected softwear code. And yes your truck does have a knock sensor. Its either on the left head or on the block on the mid left side, real easy if you have a Calif engine. If not it still has a knock sensor some where, it has to,... 90 Chevy Silverado Code 42 Engine ODB2 Fault Codes 90 Chevy Silverado Code 42. Sign In. I have a 90 Chevy Silverado, 5.7 Truck 110000 miles, running sluggish, has a code 42. With vehicle running I unplugged the EST wire and it almost died so i would say its getting a good connection between the distributor and the ECM. 87' 350 TBI code 42 Chevy Message Forum Restoration ... Code 42 can be set by a bad distributor module, a bad ECM or wiring problems between the ECM and distributor. A code 42 will get set when the set timing connector is unplugged to set the timing. Make sure you clear the codes after setting the timing. A bad distributor module is a common cause for this code. 88 Suburban Error Code 42??? Car Forums and Automotive Chat What the real problem was , where the 4 pin connector plugs into the ignition module on the distributor, the white wire, circuit 423 in the manual. The socket inside the connector was open circuiting with just a small tap. This open circuits the EST line and sets the code 42. 1988 Chevy Silverado code 42 Car Repair Questions ... I have a 90 Chevy Silverado, 5.7 Truck is running sluggish, has a code 42, with vehicle running I unplugged the EST wire and it almost died so I would say its getting a good connection between the distributor and the ECM. I replaced the module in the distributor, still runs the same. Not sure where to go from here. GM OBD Trouble Code 42 Car Repair Estimates See what others have asked about this, or visit the Questions page to ask your own question. error code 42. 1995 Chevrolet C1500 Car Repair Estimates A code 42 on a GM vehicle is a bear to diagnose, I know because I used to be a GM Dealership Journeyman. It stands for a loss of Electronic Spark Timing or EST, which can be caused by many things, like the engine dying, a bad crank sensor on the engine a defective ECM ( engine computer ) or more, like a bad ground etc. Result of Location Starter Relay 95 Skylark – HD Wallpaper ... Result of Location Starter Relay 95 Skylark Images and more Photos such as 97 Thunderbird Starter Relay Location, Starter Relay Location On Mower, Ford Starter Relay Problems, Camry Starter Relay Location, Freightliner Starter Relay Location, Camshaft Relay Location, Ford Starter Relay Location, Toyota Corolla Starter Relay, 2005 Camry Starter Relay Location, Toyota Camry Starter Relay ... SOLVED: HOW DO FIX A CODE #42 ON 1991 CHEVY TRUCK Fixya 4 flahes, then 2 trouble code on a 1995 chevy suburban. it is a 42, 96 on up use a OBD II system to read codes. older than 96 use an OBD I system to read codes. 42 means electronic spark timing or bypass fault. this means that BYPASS line is open or grounded, 2) EST line is open or grounded. CO710 Ask the GM Technician GM Trucks In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM Trucks as a daily part of their ownership experience.

how do ya fix code 42 on a gm truck 1992 Gallery


how do ya fix code 42 on a gm truck 1992

how do ya fix code 42 on a gm truck 1992

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