| Author | Message | ||
     Tony Zuniga (Tony23007) Member Username: Tony23007 Post Number: 113 Registered: 05-2003 |
I just recently started experiencing problems with my idle when I start the car, I am wondering if my IAC is going bad, can anyone give me some input? Problem is the car starts just fine but right after I change it into gear the car almost shuts off, the idle goes way low and then it pick right back up, after the car is warm up everything is fine. I think it might be the IAC but I am not sure. | ||
| Aaron Richardet (Draaronr) Member Username: Draaronr Post Number: 155 Registered: 09-2002 |
What year? What maintenance done? Any codes tripped on Computer? That is what happened to mine, but it is an expensive part to replace. | ||
| Tony Zuniga (Tony23007) Member Username: Tony23007 Post Number: 114 Registered: 05-2003 |
It's a 95, I've done all the required maintenance that I can think off. I don't know if there are any codes on the Computer, there are no Engine lights that come on but the problem just started though. I want to fix it before it gets worst. Thanks for any input!!!! | ||
| Aaron Richardet (Draaronr) Member Username: Draaronr Post Number: 160 Registered: 09-2002 |
Check your vacuum lines and see if that helps. What happens if you unplug your IAC? Its not a cheap part, but it will fix a lot of things. How is your vaccuum advance? I would start with checking those things and you will probably find the problem. Also what if it just idles for a while? What does it do on startup, does it idle way up then come down or something else? | ||
| Joseph Bilyk (Denverrover) Member Username: Denverrover Post Number: 70 Registered: 02-2003 |
Same thing happened when my IAC went bad. I had to tap the gas in order to keep the truck running at start up. FYI it is a cheap part ($29-$49); aftermarket or AC Delco is readily available for a 95. Check the archives for part numbers. There have been a ton of posts w/ info about this. Joe | ||
| Aaron Richardet (Draaronr) Member Username: Draaronr Post Number: 162 Registered: 09-2002 |
I would go genuine, but it is your gamble. Read other active posts going on now about the subject of aftermarket vs. geuine. | ||
| Tony Zuniga (Tony23007) Member Username: Tony23007 Post Number: 116 Registered: 05-2003 |
I have not checked what happens if I unplug my IAC but I will try this later on. My idle runs great right now once the car is warm up, it only has problems right after I start it, it idles high, then it comes down to where it should be and then all the sudden it drops to zero and the car seems like its about to stall but it quickly picks back up to normal. A tap on the accelerator fixies it!!!! I will chekc on a cheap aftermarket IAC part, if that fixes it then I will go with the geuine. | ||
| Joseph Bilyk (Denverrover) Member Username: Denverrover Post Number: 74 Registered: 02-2003 |
FYI: AC Delco makes the genuine LR part. | ||
| Aaron Richardet (Draaronr) Member Username: Draaronr Post Number: 165 Registered: 09-2002 |
It sounds like IAC, true but if you go to autozone they will cross reference the expensive one also. I tried the $25 dollar fix and it didn't work for me | ||
| Love Jones (The_tool_man) New Member Username: The_tool_man Post Number: 2 Registered: 06-2003 |
a lr iac cost $57 plus shipping. but, i have a similar problem, but the new lr stepper didnt fix it. i am still tripping the code 48. do you think my brand spankin new LR stepper is already fualty after one hour of use? | ||
| Paul T. Schram (Paulschram) Senior Member Username: Paulschram Post Number: 1727 Registered: 02-2002 |
Jones: I recently spoke with a gentleman who got two bad ones back to back so it is not completely unheard of. The code is coming on not necessarily because of a bad IAC valve, there may be other things taking place that the computer recognizes as being a bad IAC. Depending upon mileage, etc. it may be advisable to check air gap and base idle, along with engine timing and temp sensors, both fuel and coolant. | ||
| Love Jones (The_tool_man) New Member Username: The_tool_man Post Number: 4 Registered: 06-2003 |
well bro paul how would i know? how can i test them? | ||
| Tony Zuniga (Tony23007) Member Username: Tony23007 Post Number: 122 Registered: 05-2003 |
Air Gap? what is that and how do you check it?? I have also got my timing done and it was really far off, how easily does the timing go out? Also does anyone have part numbers for the IAC, Ive check with some online dealers and they have them available, but my local parts stores say they can't get their hands on them!!!! Thanks | ||
| Tony Zuniga (Tony23007) Member Username: Tony23007 Post Number: 124 Registered: 05-2003 |
Ok found my answer the IAC part number for the AC-Delco is AC-151 and for the Napa part MPF21738. | ||
| JPinson (Jeffro0502) Member Username: Jeffro0502 Post Number: 70 Registered: 02-2003 |
I had same problem....finally ended up with the throttle position sensor....problem solved after that | ||
| Love Jones (The_tool_man) New Member Username: The_tool_man Post Number: 20 Registered: 06-2003 |
jeffro, 1. did your ecu throw any codes? | ||
| JPinson (Jeffro0502) Member Username: Jeffro0502 Post Number: 73 Registered: 02-2003 |
No codes at all, I went through all the things suggested above, plugs, stepper (cleaned no replaced) improved a little but didn't fix. I even replaced VSS, nothing worked, finally after talking to Paul a little ended up buying a TPS. Its like a new truck. | ||
| christopher mroz (Discox) New Member Username: Discox Post Number: 31 Registered: 03-2003 |
me too, tps fixed mine, all is well after a much $$$ | ||
| Love Jones (The_tool_man) New Member Username: The_tool_man Post Number: 27 Registered: 06-2003 |
1. did you use LR tps? 2. if not lr, what is the part number for it? anyone seen paul?? | ||
| JPinson (Jeffro0502) Member Username: Jeffro0502 Post Number: 75 Registered: 02-2003 |
Genuine get it from Discount Rovers. |
