So, If he finds out tomorrow that it is a bad EGR or a vacuum leak do we get a junior G-man badge?
CK5
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1989 K5 4x4 keeps stalling!!!
- Thread starter Big V
- Start date
To be honest, in that particular case, I never found out what was wrong with the transmission, just that it failed on him and was the cause of the stalling. Since the torque converter is the place where the "slippage" occurs that lets the car idle while stopped, I assumed that it was the problem.
In his case, he could keep the engine running most times by giving it gas. But he had to really stand on the brakes.
It was obvious to me what was happening, because of the way the car would lurch forward at idle when he put it in drive.
If his truck does have a lockup function, then it could be that circuit that is the problem. I know that from time to time when someone here modifies or adds a lockout circuit and it does not unlock when coming to a stop that the truck will stall.
My main reason for suggesting the transmission, is his description of the problem. The truck seems to run fine once he gets going, but stalls when he tries to stop. Plus stalls as soon as he puts it in gear.
In his case, he could keep the engine running most times by giving it gas. But he had to really stand on the brakes.
It was obvious to me what was happening, because of the way the car would lurch forward at idle when he put it in drive.
If his truck does have a lockup function, then it could be that circuit that is the problem. I know that from time to time when someone here modifies or adds a lockout circuit and it does not unlock when coming to a stop that the truck will stall.
My main reason for suggesting the transmission, is his description of the problem. The truck seems to run fine once he gets going, but stalls when he tries to stop. Plus stalls as soon as he puts it in gear.
He can unplug the torque converter lockup solenoid wire to see if its not unlocking...
rampage
3/4 ton status
Thought that the electronic torque converter lockup didn't come out until '90. 
yeah, but would this necessarily make the engine stall ?
Maybe you are right , but I thought that 89's had 700r4, and that all 700r4's hadThought that the electronic torque converter lockup didn't come out until '90.
My 89 TRUCK is electric , I thought. Maybe k5s were not till 90?Thought that the electronic torque converter lockup didn't come out until '90.
Lock up torque converters came about in 1978 or so--my '81 G-10 van has one in its TH350-C,that is controlled by a vacuum switch and the stoplight switch...
Leaving one unplugged will allow the vehicle to be driven without stalling at every stop,but it'll eventually overheat the tranny and cook the innards...especially if its highway driven a lot..
Leaving one unplugged will allow the vehicle to be driven without stalling at every stop,but it'll eventually overheat the tranny and cook the innards...especially if its highway driven a lot..
The TH700R4 debuted in 1982. It has had a lockup torque converter since day one.
Martin
Martin
Things to check
1. Battery voltage
2. Fuel pressure.
3. Vacuum
4. Spark advance under load.
Items that can cause this, o2 sensor is just smoke and mirrors, the poor running will automatically set o2 codes.
1. Fuel filter
2. IAC
3. TPS
4. EGR
5. CTS
6. ECM
7. ESC
8. ICM
9. Fuel pump
10. Corrosion, burnt wire, bad gas, poor connections, low voltage, vacuum leak, low fuel pressure.
Recommendation. After checking the "things to check" list if no glaring problems are found, get a shop that has the proper scan tool to read and record the data stream. It ]"(can)"[ save you quite a bit of money from the "shotgun trouble shooting" technique. Good luck.
1. Battery voltage
2. Fuel pressure.
3. Vacuum
4. Spark advance under load.
Items that can cause this, o2 sensor is just smoke and mirrors, the poor running will automatically set o2 codes.
1. Fuel filter
2. IAC
3. TPS
4. EGR
5. CTS
6. ECM
7. ESC
8. ICM
9. Fuel pump
10. Corrosion, burnt wire, bad gas, poor connections, low voltage, vacuum leak, low fuel pressure.
Recommendation. After checking the "things to check" list if no glaring problems are found, get a shop that has the proper scan tool to read and record the data stream. It ]"(can)"[ save you quite a bit of money from the "shotgun trouble shooting" technique. Good luck.
They haven't been on since their last post on Feb. 18th. But I'm curious as well.
I know this post is a few months old but it sounds like a stuck TCC (torque converter clutch) solenoid. This would make it act as trying to stop a vehicle with a standard trans without pushing in the clutch.
OP said he loses all electrical though. I fully understand we are replying to a ghost at this point lol.
Don't know where you came up with that info as I just reread the entire thread and nothing of the sort was said.
I don't either. I read it somewhere. I can't even find a post referencing what I know I saw. Maybe I have alzheimers. In any case, with the lack of electrical problems I thought I saw, the TCC problem makes sense.
Sister had an '88 Beretta that had the TCC solenoid fail. Easy fix, but exact same symptoms. Only way to get the car moving was neutral drop.
Unplug TCC solenoid, test drive it. Don't run like that for long. If they are still available, get the Delco specific TCC solenoid, at least in the past the "universal" ones were a pain.
