Question about 1976 Cadillac Eldorado
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Posted on Jan 02, 2017
This is going to be either a programing issue in the transmission control module or an main control valve body concern. This vehicle is under warranty for 48 months or 50000 miles so I would have my local dealer take a look at it.
Ford has a new techincal service bulletin out on a concern similar to what you are describing. It states that if vehicle has less then 20000 miles to reprogram the PCM and TCM, if it has over 20000 miles they recommend to replace the main conrol valve body. The TSB number is 08-24-01
Posted on Mar 09, 2009
SOURCE: Hesitation problem
try cleaning the inside of the MAF sensor and do the following procedure as well.
Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
Posted on Mar 24, 2009
I've got the same make/model and issue. I've got a mechanic I trust who changed the spark plugs and pc valve (about $200). The problem has persisted and he's telling me we need to change the spark plug wires which I avoided because they were going to cost me $120 @ Autozone. So I knew if I'd ordered through my mechanic or the dealer they would have been twice that not including labor. If it doesn't work...I'll be calling click and clack.
One thing I can say...is that this car is the best example of why you need a trustworthy mechanic. Someone who is willing to try and eliminate an issue one at a time versus what they did to you. I really love my car and have grown to realize the parts are hard to find and rival BMW's in price. Find another mechanic...and if when you buy a part for routine maintenance...buy two.
Posted on Apr 13, 2009
You just need to go through a simple Idle Relearn Process.
The Idle Speed Control motor will cause the accelerator pedal to tap and the car will surge back and forth, actually acting like there is a lack of power during intial startup.
Whenever a battery is changed, went dead or the ECM computer is replaced.
In order to make the engine run normal again, you need to take the car through a relearn process. Otherwise the idle could be very slow or have a 30mph idle.
To enable it to relearn, here's what to do.
1) Disconnect the battery cable for 15 minutes, before hooking it back up.
2) (KOEO) Turn the Key On with Engine Off, just so the electronics are on, but without starting the engine and turn the climate control panel to off.
3) Push the off and warmer buttons on the climate control panel at the same time and hold for up to 5 seconds for the computer to go into diagnostics.
On the fuel panel screen it will display 888 then E52 and then 70.
When it gets to 7.0 shut off the key for 1 minute.
4) Repeat step 3, two more times.
5) Start the engine without pushing on the accelerator pedal and let it run for 18 minutes with the climate control panel off.
6) After 18 minutes put your foot on the brake and shift into drive and wait 1 minute.
7) Then turn on the a/c by pushing the auto button. It needs to be warmer than 60 degrees F so the compressor can engage. Wait 1 more minute.
8) Put the shifter back in park and turn the key off.
9) Wait 1 minute
10) Idle relearn is now complete and the engine should start and run correctly.
Posted on Sep 16, 2009
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Throttle Body Cleaning on vehicles without electronic throttle control (most 2003 and down)
You can in most cases repair this slow speed stall or unstable idle by cleaning the engine throttle valve and the idle speed control valve using a product called CRC Spray Throttle valve cleaner. Spray the cleaner into the air intake of the engine with the hose removed from the throttle body, the engine will try to stall so hold up the idle speed manually. Once you have used up about 1/2 can of the cleaner stall the engine out while spraying and turn the key off, disconnect the negative battery cable for 5 minutes and then reconnect and drive the car for a about 25 miles of varied driving modes. If this doesn't cure the problem you may need the fuel injectors professionally cleaned by the dealer service dept.
Jul 11, 2017 | 2002 Honda Accord
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