89 reatta computer says cruise control disengaged electrical problem

[bikemikey]

My 89 reatta computer under diagnostics when I push engine ok it says cruise control disengaged electrical problem. The other thing is the abs light now stays on all the time where sometimes it would come on for a while then go away the next time I would start the car. Some of the things I did to the cruise control servo, I did an ohms test to the five pins, seems to be okay, pull a vacuum on the two ports, both ways but it won't hold a vacuum, maybe it's suppose to be that way, I don't know. When I push the cruise button it lights up if that helps. The symptoms of the car, are it starts okay ,sometimes a little rough but it starts, the best idle is when it's cold until it starts going into closed loop mode. The idle feels like there is a mild resistance , a short somewhere, it does rev up okay, not a problem there. Some other things I've done to the car, new fuel filter, checked fuel pump and regulator, air filter, changed out all fusible links by the battery, cleaned throttle body, maf, iac, checked mat, new Magnavox ignition coil and module, wires and plugs gapped at .060. , new o2 sensor. I also added fuel injector cleaner to the gas plus sea foam before I changed the fuel filter. I also cleaned the egr , with engine off I can hear the solenoid valves clicking but when engine running I can't get it to make the engine stumble, I might be doing something wrong there. It's not throwing any codes, I'm confused. I appreciate any help you can give me. Thanks

[padgett]

ABS does not affect cruise control. You need to pull the trouble code(s). If says "electrical problem" without you doing anything there are some. If you are pushing buttons then anything can happen.

[Guest Mc_Reatta]

Welcome to the forum!

Don't quite understand statements concerning cruise control warning and diagnostics codes. If your getting a cruise control warning there should be a BCM trouble code set.

You should create a new thread for each of your different problems.

You might do a tap test on your MAF.

Hard starting can be bad fuel pump relay.

Are you trying to test your EGR and you are not getting a response from the engine RPMs when you actuate the EGR solenoids?

Your ABS light is most likely caused by a bad front wheel sensor.

Edited July 14, 2013 by Mc_Reatta (see edit history)

[Guest 89 Maui]

Upon rereading your post, I am questioning if you are getting into the diagnostics portion on the crt. In order to get into the diagnostics, first you must select the climate screen, the upper left button. Once in that screen the depress the OFF and the WARM buttons and hold them until the screen activates the diagnostics. It will start reading the current and history codes, be prepared to write down what the diagnostics codes that are showing as they do go by quickly. After the codes it will start with the ECM section, in the ECM section it will give you the readouts for current device inputs. By selecting the UP will take you to the ECM outputs, use this section while the key is ON but engine not running, here you can select "overrides" which will allow you to activate various outputs and you can listen if relays or solenoids are physically "activating" by the clicking sounds in the engine compartment. By doing another "UP" will take you into the BCM portion of the diagnostics.

You will find the diagnostics extremely helpful in finding what is wrong in your engine.

Let us know if you have any current or history codes that are being shown. If you are not knowledged in the codes just ask us and we will be happy to explain the codes.

Woody

[bikemikey]

Thanks everyone for your replies. I did something really stupid, after posting the message it dawned on me that I had been disconnecting the battery , on and off, while replacing the fusible links, Whoops! . That's probably why the codes are not showing up right away. I probably should drive the car a little and see what happens. I plan to get familiar with the computer in this car today, I'll get back to you and let you know what I find. Thanks again

[bikemikey]

Back again. After driving the car around a little bit I checked the computer. After touching the off and warm buttons , the computer showed no ecm codes but it did show some history codes, b552 and c553. I think were the confusion comes in , there is a status button which shows 4 headings, engine controls, charging systems, engine temp and oil pressure. With the key on , engine not running , each one shows ok in their perspective boxes. When I touch each box where it says ok, each one has a problem with it, this is where I am getting the cruise control message. Is the engine suppose to be running before I use this button? The car actually ran pretty good, the idle seems to be getting better with the fuel injector cleaner. Thanks

[Ronnie]

This will help explain:

Why is diagnostics telling me I have so many problems? - Reatta Owners Journal

[bikemikey]

Ronnie, thanks so much for that info, that pretty much sums it up. I read the owners manual , but it looks like I skipped over that one. There's probably not much else wrong with the car other than clogged injectors , the car sat for a long time. Thanks everyone for your help.

[Ronnie]

Glad to be able to help.

[padgett]

Couple of tanks of 10% ethanol will unclog.

[bikemikey]

I'll give it a try, thanks