Airmex Posted April 27, 2004 Report Share Posted April 27, 2004 Hey all My 90 Caddy ElDorado is hesitating when i press on it gently. If I smash it, it will kick in the passing gear but wont hold it for long and I have no guts on the top end (higher thatn 65-70 mph). Today I will do the tune up, plugs, wires, fuel filter, pcv valve, and o/2 sensor. If this does not fix my problem, can I get some input to look for something else that may be triggering my hesistation. Thanks in advance Mike Link to comment Share on other sites More sharing options...
careldo Posted April 27, 2004 Report Share Posted April 27, 2004 and don't forget the air filter Link to comment Share on other sites More sharing options...
up2ng Posted April 27, 2004 Report Share Posted April 27, 2004 Hey all My 90 Caddy ElDorado is hesitating when i press on it gently. If I smash it, it will kick in the passing gear but wont hold it for long and I have no guts on the top end (higher thatn 65-70 mph). Today I will do the tune up, plugs, wires, fuel filter, pcv valve, and o/2 sensor. If this does not fix my problem, can I get some input to look for something else that may be triggering my hesistation. Thanks in advance Mike I would clean the EGR tubes before anything else and as for the "no top end" I would lean towards a plugged catalytic convertor. EGR tubes are below the Throttle Body, 2 brass tubes most likely filled with black gunk! Link to comment Share on other sites More sharing options...
Airmex Posted April 27, 2004 Author Report Share Posted April 27, 2004 Awesome..thanks for the heads up on the egr valve tubes. Will let you know how it turns out. Thanks in advance Mike Link to comment Share on other sites More sharing options...
Airmex Posted May 12, 2004 Author Report Share Posted May 12, 2004 Well..it turns out it was a bad injector #5. Dead/gone/i quit. Replaced it and the caddy runs great again. When the caddy gets to its normal engine temperature, and i come to a stop, then proceed to press on the gas pedal. I can still feel just a little bit of hesitation, but then clears up. Are the rest of my injectors going bad? It's got to be something else. As I mentioned on the above posts..I have done everything for the tune up, wires, plugs, pcv, clean egr tubes, air filter, cap, rotor, and coil pack. Any further advise would be appreciated. Thanks in advance Mike Link to comment Share on other sites More sharing options...
KHE Posted May 12, 2004 Report Share Posted May 12, 2004 Clean the EGR tubes first - that should eliminate the hesitation when accelerating from a stop. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
Airmex Posted May 12, 2004 Author Report Share Posted May 12, 2004 I did clean the egr tubes. Anything else? Thanks in advance Mike Link to comment Share on other sites More sharing options...
mike5514 Posted May 12, 2004 Report Share Posted May 12, 2004 The only thing i can think of is the idle air control valve try cleaning it first there is a measurement for the pintle but I dont know what it is. Im assuming your year cadillac has one. MIKE Link to comment Share on other sites More sharing options...
Airmex Posted May 12, 2004 Author Report Share Posted May 12, 2004 can anybody confirm if my caddy has one? If so..where is it? Thanks in advance Mike Link to comment Share on other sites More sharing options...
SteveJ Posted May 12, 2004 Report Share Posted May 12, 2004 I can't believe nobody said to clean the deposits from the throttle body and the back side of the throttle plates. It is a classic problem for your era Caddy that causes hesitation. Tooth brush and carburetor cleaner. Also as you already did rod out the EGR tubes. All that crap that plugs them can fall down. There is nothing down there to hurt by it. Link to comment Share on other sites More sharing options...
Airmex Posted May 13, 2004 Author Report Share Posted May 13, 2004 Will i need gaskets to replace when i remove the throttle body? Or can i still use the same one? Thanks in advance Mike Link to comment Share on other sites More sharing options...
KHE Posted May 13, 2004 Report Share Posted May 13, 2004 Why are you removing the throttle body??? To clean, just hold the throttle plate open and scrub away the deposits with an old toothbrush and carb cleaner. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
Airmex Posted May 13, 2004 Author Report Share Posted May 13, 2004 Ohh...i was under the impression i had to remove it... Thanks for the heads up. Mike Link to comment Share on other sites More sharing options...
Airmex Posted May 14, 2004 Author Report Share Posted May 14, 2004 Well cleaned the throttle body. Still has that small hesitation on take off. Any other suggestions? Thanks in advance Mike Link to comment Share on other sites More sharing options...
Airmex Posted May 17, 2004 Author Report Share Posted May 17, 2004 bump Link to comment Share on other sites More sharing options...
mike5514 Posted May 20, 2004 Report Share Posted May 20, 2004 Im looking over my recent post and i notice there is not an answer to your problem did you ever solve it? mike Link to comment Share on other sites More sharing options...
Airmex Posted May 21, 2004 Author Report Share Posted May 21, 2004 No..not yet. I will be taking it to a local shop to run a diagnostic. Hopefully it will pin point the problem. Will post results. Mike Link to comment Share on other sites More sharing options...
Airmex Posted May 24, 2004 Author Report Share Posted May 24, 2004 Well...survey says.....PCM Turns out my PCM is bad. Does AC/Delco have an performance pcm that I can replace? If not..where can I get the best deal for a stock pcm? Mike Link to comment Share on other sites More sharing options...
Airmex Posted May 24, 2004 Author Report Share Posted May 24, 2004 bump Link to comment Share on other sites More sharing options...
Airmex Posted May 25, 2004 Author Report Share Posted May 25, 2004 anybody??? bump Link to comment Share on other sites More sharing options...
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