I have an 99 Astro Van and the service engine light has been on for quite sometime. It would only stay on for a bit before and go off. I took it to the shop and was told it was sensor in the trans causing it to go on. When accelerating and getting out of first gear it would jump but after that it runs fine. Well I had the shop reset it so I can get my emissions test. It did pass with no problem. Well it's that time of the year again. Does anyone know how to reset the light and what is making the trans jump after first gear?
I don't know what's causing the jump but, to reset the light you use an OBDII scan tool. Some parts stores like Autozone and Advance will read the codes for you for free. You could ask them to reset it after he reads them.
SOURCE: Bizarre shifting pattern 1984 Mercedes 300D automatic
Hello, The adjust of your t/v cable, not kickdown cable, and the operation of the vacuum controller at the rear of injection pump, and the modulator, is critical for this car to get a good shift.
Put you cable back on, adjust it so that when you have wide open throttle, the cable does not have any slack. Check the black vacuum line by the oil filter housing that goes to the modulator to see if it has vacuum. It should have about 10-15" vacuum and as you increase engine speed it should drop. If you get close to this, the trans should shift ok. If you cannot get vacuum at the modulator line, you need to ck vacuum supply, valve at rear of injection pump, hose routing, etc.
If the B2 piston failed, it would be difficult to move car or slip badly. Also, take into mind that at the bottom of your accelerator pedal stroke is a kickdown switch.
If you accomplish what I instructed, you will probably get a decent shift.
If you find this information to be correct would you please enter a "fixya" rating.
Thanks, Gator241
SOURCE: Need diagrams for 88 Jeep Wrangler Auto Trans
Your public library will have a manual covering your mechanical repair. Moreover, they have the automotive shops online software called AllData. It is the best auto technician database available today. You can print out specific troubleshooting procedures, diagrams, step-by-step istructions, and soforth. The typical person cannot afford to pay for this service, just automotive dealerships, etc... that is why the public library made it available to everyone and for free to view and print out material. This should Fixya! Good Luck!
SOURCE: 1999 Chevy Astro Van. Don't know exact model # of
You should have a 4l60E in your astro van. Which is electrically controlled, so no vacuum modulator. However, to address the ventilation selector not working... look for a vacuum line exiting the firewall and going to the passenger rear of the intake manifold. You will likely find it broken or disconnected there.
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