Cadillac Owners Forum banner

1 - 20 of 48 Posts

·
Registered
Joined
·
48 Posts
Discussion Starter #1
caddy stutters going up incline or depressing gas pedal just a hair. Any solutions? ( 91 broughham__5.7)Thank you
 

·
Registered
94 FWB, 93 SDV, 94 FWB (sold), 90 Brougham (sold)
Joined
·
3,730 Posts
Alright, first things first, are you getting any codes? Do you know how to pull codes? if not, then search the forums here and figure out how to pull the codes using the climate control, or one of us can tell you. Stuttering can be a whole magnitude of things. Can you give us any more symptoms?

Brian
 

·
Registered
Joined
·
48 Posts
Discussion Starter #3
By crossing the A & B pins, and using the blinking check engine light, it says there is no problems. I don't know about using the climate control to do this. I can explain in more detail later when I get off work about the symptoms. Thanks for the reply.

Frank
 

·
Registered
94 FWB, 93 SDV, 94 FWB (sold), 90 Brougham (sold)
Joined
·
3,730 Posts
Using the climate control is quite easy, once you get the hang of it. Hold down the "off" and "warmer" buttons for a short period, until the display changes and all lights up. Now hit either the high or low fan speed buttons until the display shows "-01" Press the outside temperature button. This will display the codes as well. If there's more than one, keep hitting the outside temp button, and they'll keep appearing. If 00 appears when you press outside temp, you have no codes.

Brian
 

·
Registered
94 Fleetwood Brougham
Joined
·
7,534 Posts
Often I would see that with a poor condition ignition, plugs, wires, cap, rotor.

If all good, then you can likely assume fuel pressure. Those are the most obvious.
 

·
Registered
1991 Cadillac Brougham D'Elegance 5.7 Litre, 1994 DeVille
Joined
·
6,796 Posts
90Brougham350 said:
Using the climate control is quite easy, once you get the hang of it. Hold down the "off" and "warmer" buttons for a short period, until the display changes and all lights up. Now hit either the high or low fan speed buttons until the display shows "-01" Press the outside temperature button. This will display the codes as well. If there's more than one, keep hitting the outside temp button, and they'll keep appearing. If 00 appears when you press outside temp, you have no codes.

Brian
You don't have to press the fan buttons. If there are any codes it will show them automatically. The fan buttons only goto other numbers that don't have anything to do with it.
 

·
Registered
Joined
·
48 Posts
Discussion Starter #10
I will try that in a few minutes. I cleared the memory before leaving work for the the 30 mile ride home. Thank you. That is really nice to know.
 

·
Registered
Joined
·
48 Posts
Discussion Starter #11
It has had a full complete tune-up. New distributor,coil,egr valve,fuel pump and filter,timing chain and gears,water pump, radiator,alternator and belt. I pulled the lifters, took them apart and cleaned them like new, cleaned the intake inside out like new, (the passages were totally blocked going to the egr valve) has new intake and throttle body gaskets. The timing is dead on. It does run barely better than it did, but the stuttering is getting worse. I f I take my foot off the gas pedal a hair, it stutters now too. If I depress the gas pedal pretty good, it doesn't do it.
I have noticed that I can hear the throttle body really good intermitently when standing outside the car.I was going to replace it until the dealer told me over $1200.00 for it yesterday. I hope this is enough info for someone to be able to help. Thank-you.
 

·
Registered
'80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
Joined
·
2,096 Posts
Look for a localized vacuum leak using a can of carbonator spray. Some throttlebody base gaskets used to spring a leak toward the rear of the engine but I thought they had the problem solved by production of your car. That would account for the extra noise.
 

·
Registered
Joined
·
48 Posts
Discussion Starter #13
I tried the climate control for the codes and it showed 00. I pushed the outside temp button again and it showed 01 then back to 00. Does the 01 mean anything? Thank you
 

·
Registered
94 FWB, 93 SDV, 94 FWB (sold), 90 Brougham (sold)
Joined
·
3,730 Posts
You are code free, my friend. Ape Man is right on about the vacuum hoses, check every single of them! We had a member not long ago with poor power, black smoke out the pipe, running terrible. Turned out to be the MAP vacuum hose.

Brian
 

·
Registered
Joined
·
48 Posts
Discussion Starter #15
Carbonator spray didn't change anything, vacuum lines didn't change anything. I guess the only thing left is speech class.
 

·
Registered
Joined
·
48 Posts
Discussion Starter #16
I did notice heavy gas smell from throttle body when taking air cleaner cover off( the car had been shut off for an hour) and the little WHITE filter inside the air cleaner cover that goes to the passenger side valve cover was dirty brown and oily, the filter is only 2 weeks old. Any clues?
 

·
Registered
70 Fleetwood, 87 and 90 Brougham, 94 Fleetwood
Joined
·
215 Posts
Likely just normal blowby on the filter.

What brand of plugs did you put in? Use only AC/Delco plugs in GM cars. Check the wires for shorting or improper engagement. You can easily check for sparks jumping by spraying down the engine with water from a squirt bottle at night. You will immediately see any shorted HT wires or any that have not seated properly on the plugs or cap.

Mike
 

·
Registered
Joined
·
48 Posts
Discussion Starter #18
guidematic said:
Likely just normal blowby on the filter.

What brand of plugs did you put in? Use only AC/Delco plugs in GM cars. Check the wires for shorting or improper engagement. You can easily check for sparks jumping by spraying down the engine with water from a squirt bottle at night. You will immediately see any shorted HT wires or any that have not seated properly on the plugs or cap.

Mike

I am using AC/Delco plugs. I have not checked the plug wires...which I will do as you suggested when it gets dark.
I talked to the dealer near where I live to order some inline valves, filters in the vacuum line system and he told me to look at the spray pattern of the injectors, (which fuel was running down the walls of the throttle body...don't know if that is good or bad yet) and I could watch the oil vapor coming into the air cleaner housing through that filter pretty good...I have to think that it is not a good sign. Thank you for the information and everyone else for their help.
 

·
Registered
Joined
·
48 Posts
Discussion Starter #19
guidematic said:
Likely just normal blowby on the filter.

What brand of plugs did you put in? Use only AC/Delco plugs in GM cars. Check the wires for shorting or improper engagement. You can easily check for sparks jumping by spraying down the engine with water from a squirt bottle at night. You will immediately see any shorted HT wires or any that have not seated properly on the plugs or cap.

Mike
I checked for arcing of the plug wires tonight. No arcing, so I got the water hose out and drowned the engine like niagra falls and still no arcing, plus it is raining buckets when I did this. The plug wires are new, but I guess that doesn't mean that they are all good. Well at least the engine compartment is nice and clean now. Thanks.

Frank
 

·
Registered
70 Fleetwood, 87 and 90 Brougham, 94 Fleetwood
Joined
·
215 Posts
Now thatyou have established that all is OK on that front, time to move on. You said you had a new distributor? The whole thing? Or just a cap. Was the rotor changed?

Another possibility is EGR valve flutter that can cause the mixture to lean and richen several times over a short period. To check for this, slowly raise the rpm of the engine and put your fingers on the diaphragm and make sure it lifts slowly and gradually. If not, it could be the valve or the solenoid. It will not necessarily shoot a code either when one starts to go bad.

Mike
 
1 - 20 of 48 Posts
Top