Rough start,then runs fine when warm.

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dragrazor

Active Member
Joined
Jan 25, 2012
Messages
666
Hello, I am new to the Grand National, but not to turbo vehicles. I have a stock 87 with 127600 miles. I know its high but it was very well taken care of all its life. This is what it does:

First start up it revs to 2000-2200 then comes down, when it comes down, it goes too low and wants to shut off(sometimes it does). It goes right back up to 2000-2200 and then down again. This occurs for about 30 seconds. It then settles down but i can hear a little bit of stuttering. I let it warm up for about 2 minutes and it idles fine.

Then i take it out on the road. When i first give it gas, it wants to die and then quickly responds and goes but when it goes, it stutters. After about 5-10 minutes of driving like this, it runs fine with no issues. Is this normal in these cars? Is this common? Any ideas? Any help will be appreciated. Thank you very much in advance.
 
Sounds like a stock chip...what chip is in it...what are your scantool numbers?
 
Stock chip, I have a scanmaster. What numbers should i be looking at? Also, i get no codes
 
Mine did the same thing, my problem was a thrasher chip in it, after changing to stock chip all was fine.
 
mine does the same thing, everythings stock on the ride at the moment took it to Jeff Roddick and he set the TPS and IAC veh runs a hell of a lot smoother, however he did recommend new chip, fuel pump/hotwire and injectors, he pointed out to me original injector were on the vehicle. parts are on order and will be installed by Jeff this coming week. ill let you know how it goes.
 
mine does the same thing, everythings stock on the ride at the moment took it to Jeff Roddick and he set the TPS and IAC veh runs a hell of a lot smoother, however he did recommend new chip, fuel pump/hotwire and injectors, he pointed out to me original injector were on the vehicle. parts are on order and will be installed by Jeff this coming week. ill let you know how it goes.

What did he set it to? What numbers?
 
sorry guys not sure on the #s ill ask when I drop off the car this coming week.
 
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