Hi,
I know you all are probably sick of talking about this topic but I searched and couldn't find this specific problem. Most posts are concerned about lowering the fast idle. My truck has LOST the warm up idle after putting it in the body shop for a door repair.
When I crank it cold, it makes an initial "vroom" and then quickly drops down to 6-800 rpm. Once it is warm, it idles at a stop at about 400 rpm. (too low for me) Any suggestions on what could have happened at the body shop and what I should check? My first troubleshooting will be to find the coolant temp sensor in the FSM and see if they knocked the lead off. My other thought is maybe the ECU is kicking into some default mode due to an error? There are no "check engine lights" on.
Powell
P.S. - I included a more detailed history below if necessary...
History
I had a complete tune-up at Toyota less than 500 miles ago. The idle has always been about 130-1400 rpm when cold and then slowly drops down to ~600 rpm when warm.
My truck got hit in the driver's side door and I put it in the body shop to have it repaired. They put a new piece of sheet metal on the existing door and repainted the door and color-matched it to the body panels surrounding it. They tell me that the only thing they did under the hood was to disconnect the ground of the battery.
When I got the truck back, I cranked it and was surprised when it started, it gave an initial short "vroom" and then quickly dropped down to between 400-600 rpm. I just figured it had been sitting and was slightly warm already so I drove it around. There was also a quarter tank of gas in it so I filled it up.
The next morning, I cranked it when totally cold and it did almost the same thing. Initial "vroom" on startup and immediately dropped to about 6-800rpm. When giving it a little gas, the engine was running rough until i revved it to about 12-1400 rpm. Once it is warmed up, the idle sits a little too low around 400 rpm.
I've put about 150 miles on it now and it is still doing this. Any ideas on what could have happened? I've looked under the hood and haven't seen anything obvious disconnected.
I know you all are probably sick of talking about this topic but I searched and couldn't find this specific problem. Most posts are concerned about lowering the fast idle. My truck has LOST the warm up idle after putting it in the body shop for a door repair.
When I crank it cold, it makes an initial "vroom" and then quickly drops down to 6-800 rpm. Once it is warm, it idles at a stop at about 400 rpm. (too low for me) Any suggestions on what could have happened at the body shop and what I should check? My first troubleshooting will be to find the coolant temp sensor in the FSM and see if they knocked the lead off. My other thought is maybe the ECU is kicking into some default mode due to an error? There are no "check engine lights" on.
Powell
P.S. - I included a more detailed history below if necessary...
History
I had a complete tune-up at Toyota less than 500 miles ago. The idle has always been about 130-1400 rpm when cold and then slowly drops down to ~600 rpm when warm.
My truck got hit in the driver's side door and I put it in the body shop to have it repaired. They put a new piece of sheet metal on the existing door and repainted the door and color-matched it to the body panels surrounding it. They tell me that the only thing they did under the hood was to disconnect the ground of the battery.
When I got the truck back, I cranked it and was surprised when it started, it gave an initial short "vroom" and then quickly dropped down to between 400-600 rpm. I just figured it had been sitting and was slightly warm already so I drove it around. There was also a quarter tank of gas in it so I filled it up.
The next morning, I cranked it when totally cold and it did almost the same thing. Initial "vroom" on startup and immediately dropped to about 6-800rpm. When giving it a little gas, the engine was running rough until i revved it to about 12-1400 rpm. Once it is warmed up, the idle sits a little too low around 400 rpm.
I've put about 150 miles on it now and it is still doing this. Any ideas on what could have happened? I've looked under the hood and haven't seen anything obvious disconnected.
