racegirl04 Posted August 10, 2010 Share Posted August 10, 2010 We have a 1998 Sierra with 5.7 motor. He said it stumbled a little the other day, then the CEL came on. He revved it to clean it out and the light went out and it ran fine the rest of the day. Checked the code and it said throttle position sensor. But now we are looking for detailed instructions on how to change this. Any suggestions for website or firsthand instructions from any of you Chevy geniuses on here Quote Link to comment Share on other sites More sharing options...
bmitchell373 Posted August 10, 2010 Share Posted August 10, 2010 The tps is right off of the throttle body. One connector and a few screws and your done. Quote Link to comment Share on other sites More sharing options...
racegirl04 Posted August 10, 2010 Author Share Posted August 10, 2010 Thanks Quote Link to comment Share on other sites More sharing options...
EY3BA11 Posted September 1, 2010 Share Posted September 1, 2010 does it have a K&N on it? Possibly over oiled the filter the last time around and got the sensor dirty? Quote Link to comment Share on other sites More sharing options...
bp-guy Posted September 2, 2010 Share Posted September 2, 2010 (edited) I doubt the TPS could be effected by K&N oil. The sensor mounts internally to the throttle body and moves off the butterflys movements. The mass air flow sensor can be easily contaminated by that oil. My 94 Cobra had that exact problem. It ran ok then on full throttle it would fall on its nose hard. We cleaned the wires on the MAF and it came back to life. The TPS is changed easily. Hopefully it doesn't have the tamper resistent hex screws on it. If not then its a simple 5 minute job. Edited September 2, 2010 by bp-guy Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.