Motor dies when making a quick stop
With Christmas and my practice I've been super busy, but I should finally get time to wire up the relay tomorrow and give it a shot. I will let everyone know as soon as I try that.
I'm running a th400 with an internal VSS btw. The pcm has been throwing two trans related codes P1810 and P1860. Which kind of pisses me off since my tuner knew I was running a TH400 and I assumed they would have tuned the pcm for a manual. Btw the tune is a mail order from Texas Speed to get the car rolling.
I'm running a th400 with an internal VSS btw. The pcm has been throwing two trans related codes P1810 and P1860. Which kind of pisses me off since my tuner knew I was running a TH400 and I assumed they would have tuned the pcm for a manual. Btw the tune is a mail order from Texas Speed to get the car rolling.
Ok, so now I'm confused. Youre running a turbo400? What's an internal VSS? On the brake switch, rather than wiring up a relay, you could just get a brake switch from a 70's or 80's GM car with cruise and use the normally closed set of contacts on it, but not running a lock uo torque converter I wouldn't think you would need it at all.
Someone earlier asked if I was running drive by wire or cable. I'm running drive by cable.
Ahhh, gotcha. Do you have a way to check that the VSS is working? Scanner, HPTuners ect?
Also I wouldn't think you should need the brake switch hooked up without a lock up TC or electronic trans, but couldn't hurt I guess. The ACDelco part number is D850a, but you can cross that number with other brands.
Also I wouldn't think you should need the brake switch hooked up without a lock up TC or electronic trans, but couldn't hurt I guess. The ACDelco part number is D850a, but you can cross that number with other brands.
The problem has got to be with low fuel in the tank. I was running the exact same setup but using the stock tank in my s-10, NEVER had the vss hooked up, never had the brake wire connection hooked up either, and I drove it all over the place hard accelerating, quick stops, short stops, throttle goosing, and nothing at all. Never died on me. And I did everything to toss the gas around in that tank.
Teching In
Joined: Jun 2012
Posts: 42
Likes: 0
From: Nebraska
I've had this happen, but it was due to not having my VSS hooked up as I was running a th350.
After getting a pulse generator from Dakota Digital, it no longer hesitates upon braking.
Most people say its not the problem and other do. I'm just saying that $40 part is what fixed my problem.
Just my .02 cents!
Pat
After getting a pulse generator from Dakota Digital, it no longer hesitates upon braking.
Most people say its not the problem and other do. I'm just saying that $40 part is what fixed my problem.
Just my .02 cents!
Pat
But on a street driven car... It might not hurt too much... But it most likely adds more to the drivability functions. Just an opinion...
BC
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Verdad Gallardo The problem has got to be with low fuel in the tank. I was running the exact same setup but using the stock tank in my s-10, NEVER had the vss hooked up, never had the brake wire connection hooked up either, and I drove it all over the place hard accelerating, quick stops, short stops, throttle goosing, and nothing at all. Never died on me. And I did everything to toss the gas around in that tank.
I may FINALLY get a chance to do the brake switch this weekend and if I do that I will purposefully let the tank go below 1/2 and see what happens. But that pump whines like a **** when braking and the tank is low. I'm also going to reroute my fuel return line to the top of my tank (currently going into the sump where the fuel exits as well). There is probably too much turbulence there affecting pumping.
Once I get the Brake switch hooked up I'll report back any changes. Thanks again to everyone who contributed to this thread!!!!