ken72

I fear my fuel pump is going out. I took it to a shop the other day and they could not find anything wrong with it. No codes or misfires. Everything seemed fine. But when I start up cold it takes a minute after warming up get going otherwise it stumbles. Once it warms up it seems fine. I am at a loss but I was wondering if this could be a fuel pump issue. I ran some lucas throught the tank to see if that might clear it up but it just seems to get worse. When I turn the key I can hear the pump kick on and it fires up very easily the first time though so I just cant figure this out. Any ideas or help please.

truckntractorhick

might be a TPS or other sensor!

ken72

Yea I was thinking the TPS as well. The mechanic said the tps was registering low but he said he was able to adjust it. I thought these were not adjustable though.

ken72

Well in an effort to support the forum search function better I just want to follow up with my results. It turns out that my TPS was bad. I purchased a cheap generic one about 3 months ago and it went bad. When you compare them side by side you could see the spindle inside the TPS that turns with the throttle plate was just about 2 or 3 millimeters different from the new one. In fact when I took the screws off it didnt even turn from resistance. When I put the new TPS on you could fee the resistance and I had to hold it in place while I put in the new screws. I hate when people resolve their issues and dont post it in the thread they started.

SamSissine2

Where did you buy your new one or what brand did you buy this time? Just trying to gather some info so I dont buy the crappy one down the road.. Congrats on finding and fixing the issue!!

ken72

I bought the cheap ones from Ebay and I purchased the replacements from Autozone. The duralast products arent real expensive but they do a great job.

thorguy57

Thanks for keeping us updated. I also hate when people don't update their post when they resolve their issues. Glad you are back up and running good.