Breeza_Brown Posted March 1, 2007 Report Share Posted March 1, 2007 I've had my caddy for about a month and a half and last week the engine starts to shudder when i first start to accelerate and at about 40-45mph. Not all the time though, it thru SES three times last week and none this week but still a lil shudder at 40 mph. I can't remember how to check the codes so i need some refresher training on that too. Look at changing the plugs over the weekend but i want to check the codes first. 96 Deville Thanx. Everyday Is Saturday! Link to comment Share on other sites More sharing options...
BodybyFisher Posted March 1, 2007 Report Share Posted March 1, 2007 Try this, park the car in PITCH dark.... Lift the hood and race the engine while you stare at the engine, sometimes arching will occur as the engine races... You should take off the vanity cover first. Look closely and keep clear of all rotating accessories in the dark... If you want spritz the wires lightly with a spray bottle filled with water... When you change your plugs look for plugs that are wet with OIL, the cam covers have seals for the plug holes, if you have oil in the plug holes you might be completing the path to ground as you accelerate. Check the plugs for carbon tracking when you pull them.. Don't use dilectic grease on the boots when you replace the plugs its not recommended. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Ranger Posted March 1, 2007 Report Share Posted March 1, 2007 I can't remember how to check the codes so i need some refresher training on that too. Simultaneously press and hold the OFF & WARMER buttons. Link to comment Share on other sites More sharing options...
Breeza_Brown Posted March 1, 2007 Author Report Share Posted March 1, 2007 w/the car running or just on? Everyday Is Saturday! Link to comment Share on other sites More sharing options...
Ranger Posted March 1, 2007 Report Share Posted March 1, 2007 Either way. Link to comment Share on other sites More sharing options...
Breeza_Brown Posted March 1, 2007 Author Report Share Posted March 1, 2007 OK.... Current TC0073 History PC0300 PC0603 AC1348 RS0011 RS0021 RS0060 RS0061 RS0062 RS0063 RF2560 Good God that's alot in the history. Any help would be apprec. Everyday Is Saturday! Link to comment Share on other sites More sharing options...
adallak Posted March 1, 2007 Report Share Posted March 1, 2007 Eleven codes... you must have a bad ground or bad battery terminals/cables. The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
Breeza_Brown Posted March 2, 2007 Author Report Share Posted March 2, 2007 ground is/was fine. must of been before i bought it. what does TC0073 code mean? its the only one current. and how do i clear the history. thanx. Everyday Is Saturday! Link to comment Share on other sites More sharing options...
Ranger Posted March 2, 2007 Report Share Posted March 2, 2007 Can't find that code. Are you sure it is TC0073? After the codes have been displayed, use the LOW FAN button to answer NO to the prompts til you see CLEAR CODES?. Then answer YES with the HIGH FAN button. Link to comment Share on other sites More sharing options...
kens96 Posted March 2, 2007 Report Share Posted March 2, 2007 I believe TC0073 is the traction control ECBM malfunction. Just went through this with my 96 Eldo. Ended up having to replace the the ECBM module on the anti lock brake system. Are you getting the traction control light to up on the dash? Another sympton will be you car will start off in 2nd gear. Link to comment Share on other sites More sharing options...
Breeza_Brown Posted March 2, 2007 Author Report Share Posted March 2, 2007 Yeah i got the traction control light illuminated and I can't tell what gear the car starts in. I don't have a good feel for the car, it kind of shifts hard into what ever gear is first. Everyday Is Saturday! Link to comment Share on other sites More sharing options...
rmac-etc Posted March 2, 2007 Report Share Posted March 2, 2007 If the brake fluid is low it will through the traction control code. Maybe before it complains about the fluid level. Link to comment Share on other sites More sharing options...
Breeza_Brown Posted March 2, 2007 Author Report Share Posted March 2, 2007 what is a ECBM malfunction? Everyday Is Saturday! Link to comment Share on other sites More sharing options...
kens96 Posted March 2, 2007 Report Share Posted March 2, 2007 EBCM = Electronic Brake Control Module. It pulses the brake system reverse of the anti lock brakes by applying the brakes to the wheels that are spinning freely to control the car instead of opening the brakes to keep the car from skidding. It is the electronic solenoid bank that is on the Anti lock brake module under the air cleaner box. Remove the air cleaner box and you should be able to see it. It has a large cable connector going to it that hooks up to the car's computer. If the module is bad it is about a $700 dealer part new. Not bad to install if you are handy. The hardest part is if the screws holding the electronics to module to the brake side of the module don't strip. If they do the best solution is to pull the entire unit out of the car, replace the module on the bench, and reinstall the whole system and bleed the brake lines. Took me 5 hours with trial and error but got it done! Link to comment Share on other sites More sharing options...
jackc Posted March 2, 2007 Report Share Posted March 2, 2007 it kind of shifts hard into what ever gear is first. That may be due to a bad front motor mount. Its a common problem and could cause that.... Link to comment Share on other sites More sharing options...
BodybyFisher Posted March 2, 2007 Report Share Posted March 2, 2007 If you are starting in second gear that could be the reason you are experiencing shudder also, you are laboring the engine more and bogging it down.. Any ignition issues would be exaggerated if the engine is labored... Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Breeza_Brown Posted March 3, 2007 Author Report Share Posted March 3, 2007 ahh yes one of my motor mounts bad. So by the car starting in second this could be causing the car to shudder which is throwing the SES light? Which is all caused by the ECBM module being bad? Everyday Is Saturday! Link to comment Share on other sites More sharing options...
BodybyFisher Posted March 3, 2007 Report Share Posted March 3, 2007 Consider that the engine moving is negatively impacting a ground or connection to the ECBM... Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
kens96 Posted March 3, 2007 Report Share Posted March 3, 2007 I would clear the codes and see if it handles differently. If it is the ECBM, the TC0073 will come backpretty quiickly. You can also try cleaning the connection to the ECBM by disconnecting the cable connection and cleaning the contacts. Search this forum for ECBM and or TC0073 there are some excellent threads on how to do this. They are what lead me to eventually replacing the module. Have had no codes since then! Link to comment Share on other sites More sharing options...
Breeza_Brown Posted March 6, 2007 Author Report Share Posted March 6, 2007 thanx for the info I'll check on it. Everyday Is Saturday! Link to comment Share on other sites More sharing options...
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