94 Eldo Chugging Exhaust problem

abo420 · #1 (**permalink**) 04-03-07, 10:47 AM

94 Eldo, 75K and she is giving me one problem after the next. First my Tach was jumping when stopped at a light reving the car forward. Changed plugs and wires (AC Delco direct from cadillac). This did not solve the problem, at the suggestion of some of you, I cleaned the EGR valve and TB. After I cleaned the EGR, which was not very dirty or did not seem to be sticking, I took her for a spin. She was giving off a very deep and much louder Exhaust sound, and when I stepped down the car would shake as it picked up speed. Then I cleaned the TB, took the EGR off again and made sure it was properly alligned and mounted it back. Still there is an almost chugging sound when I stand at the back of the car and listen to the exhast. And the car is sluggish and shakes when I take off from a dead stop. No Codes at all. Could my EGR have gone from cleaning it and not thrown off a code. I cleaned it properly, and don't want to spend the $ for a new EGR if it won't solve the problem. Any suggestion would help a ton.

**Ranger** · #2 (**permalink**) 04-03-07, 11:59 AM

A bad EGR will set a DTC and SES light. Sounds like you may be in need of plugs & wires. Stick with A/C Delco.

abo420 · #3 (**permalink**) 04-03-07, 12:04 PM

Ranger, Plugs and wires were the first thing I did. I got them Direct form Cadillac(AC Delco all the way)

creeker · #4 (**permalink**) 04-03-07, 12:17 PM

I had a problem similar to yours with my 92 eldo. ,lurching ahead when stopped, mine turned out to be a faulty torque converter solenoid,it was not disengaging transmission when idling in gear.

abo420 · #5 (**permalink**) 04-03-07, 01:29 PM

Thanks Creeker that sheds a little light on the subject, by chance were you throwing any codes

Raze · #6 (**permalink**) 04-03-07, 04:19 PM

You aren't puffing anything out the tailpipe are you?

abo420 · #7 (**permalink**) 04-03-07, 04:48 PM

Nothing out of the tail pipe, a little bit of white mist when first start but that is about all

stevebuick23 · #8 (**permalink**) 04-04-07, 11:44 AM

Where could I find a torque converter solinoid?

How much $$$ would that run me?

**Ranger** · #9 (**permalink**) 04-04-07, 08:10 PM

http://www.rockauto.com
or
http://www.gmotors.com

M.A.C · #10 (**permalink**) 04-04-07, 09:42 PM

Jumping Tach: Clean battery cables and connections, particularly possitive side. Make sure battery is fully grounded. A jumpy tach could inidact a speed sensor problem, but that would set a code. Intermitent blinking and/or loss of PCM memory would also indicate the battery cables need to be cleaned; however, such a problem would/should set a code. I would clean the cables just to make sure.