I noticed when you removed the old IACV, there was no gasket. interesting. Also noticed that when you installed the new IACV you did not install a gasket with it. Also interesting.
@mlester3001 the old gasket stayed on the mounting flange on the engine side. I left it there and installed the new valve on the old gasket. Thanks for watching. Happy wrenching! ~Mr. C.
JOE Hyundai Tech that is great advice. I know the lower cost options can be hit or miss. Thanks for the comment and helping the community. If you have any more information we would love to hear about it. Happy wrenching! ~Mr. C.
Issac Aguilar I tried a lower cost unit one time on another vehicle and had the same problem you are describing. I replaced the IAC with an OEM part and that high startup rev went away. Not sure if that is the issue but something to think about. The intake manifold gaskets could also be causing an issue. I have heard of stories around here where the local shade tree mechanic tried the old brake cleaner spray trick and couldn't find any leaks in the intake gaskets. Later after being completely frustrated takes it to a good diagnostic shop and they smoke test it and find the problem. Thanks for asking. ~Mr. C.
Having experienced it first hand it is usually the LOWER intake gasket that goes first. Most shops don't seem to realize that there is an upper and a lower. The spray test can work, if you spray at the base of where the intake meets the actual block, after the injectors; however, the route of the leak may require spraying the underside instead of the top side.
@Tressa Zimmerman yes. If the valve is sticky and stays closed the idle would be very low. This valve is not the only device that would cause a low idle symptom. look into the throttle position sensor, camshaft or crankshaft position sensor, MAP sensor, and mass airflow sensor etc. Hope this helps. ~Mr. C.
Idk about the DOHC, but the SOHC for this entire generation of escort (98-02) has no map. I've had to rebuild the whole friggin intake at only 125,000 miles (lol ya the same as yours). I had a leak on the lower intake gasket, throttle body gasket, a failing IAC, and a dead MAF (technically two, because the first one failed at 85,000 and the second one at 115,000). I have also found that two aftermarket Air filters do not have the proper tolerances on the part the MAF tube is supposed to insert into, resulting in air bypassing the MAF. The first time it happened sent me on a wild goose chase. But after replacing everything at 126,000 miles my LTFT rests at 2-7% for the whole range of performance again. As an aside, if you haven't already, change the timing belt and water pump. While it failing probably won't result in engine damage, it WILL leave you stranded and they tend to go at 125-175,000 miles.
Team Ups the valve works fine but the intake manifold gaskets needed to be changed. It had a vacuum leak causing the erratic idle. The idle would rev up at rest and even going down the road causing a drivability issue. Try a smoke test around the intake area to make sure that is or is not the problem. Thanks for watching and commenting. If you have any more questions please ask either the community or I will help the best we can. ~Mr. C.
The Idle Air Control Valve looks harder to replace on the 1999 Mercury Mystique, even though it looks like the exact same part. The bolts are facing the firewall. I believe, Ford purposely made the Mystique hard to work on.
Mine was replaced but it doesn't idle properly. It idles too fast and takes too long to return to baseline idle speed. I figure it's simply because it's not a Ford product and not engineered to original specs.
@mlester3001 that is interesting. It could be an intake gasket leak or throttle body gasket leak. It could be a faulty valve. Thanks for watching and commenting. ~Mr. C.
Would this work the same for an 02 ford escort? Thank for the video btw
@Jarell Gilreath absolutely! If it is a 2.0 L SPI2000 engine. You are very welcome. Thanks for watching! ~Mr. C.
I noticed when you removed the old IACV, there was no gasket. interesting. Also noticed that when you installed the new IACV you did not install a gasket with it. Also interesting.
@mlester3001 the old gasket stayed on the mounting flange on the engine side. I left it there and installed the new valve on the old gasket. Thanks for watching. Happy wrenching! ~Mr. C.
Did you ever make a review video of how the AIC worked on your escort?
@Paul Patino I did not. So far so good though. She has another 10k miles on her since the video. Thanks for watching! ~Mr. C.
Thanks for this video 🙏🏽
JayTee Hang you are very welcome. ~Mr. C.
Great video! Thanks for this information!
Go For A Ride? thanks for the kind comment. Much appreciated. ~Mr. C.
I always go oem if you can there still avalable in motorcraft
JOE Hyundai Tech that is great advice. I know the lower cost options can be hit or miss. Thanks for the comment and helping the community. If you have any more information we would love to hear about it. Happy wrenching! ~Mr. C.
Why does mine rev up high when I start it up it’s a Ford Focus se 2002 and I berly replaced it ?
Issac Aguilar I tried a lower cost unit one time on another vehicle and had the same problem you are describing. I replaced the IAC with an OEM part and that high startup rev went away. Not sure if that is the issue but something to think about. The intake manifold gaskets could also be causing an issue. I have heard of stories around here where the local shade tree mechanic tried the old brake cleaner spray trick and couldn't find any leaks in the intake gaskets. Later after being completely frustrated takes it to a good diagnostic shop and they smoke test it and find the problem. Thanks for asking. ~Mr. C.
Having experienced it first hand it is usually the LOWER intake gasket that goes first. Most shops don't seem to realize that there is an upper and a lower. The spray test can work, if you spray at the base of where the intake meets the actual block, after the injectors; however, the route of the leak may require spraying the underside instead of the top side.
Could this also cause the vehicle's idle become lower in rpms?
@Tressa Zimmerman yes. If the valve is sticky and stays closed the idle would be very low. This valve is not the only device that would cause a low idle symptom. look into the throttle position sensor, camshaft or crankshaft position sensor, MAP sensor, and mass airflow sensor etc. Hope this helps. ~Mr. C.
@@NaturesCadenceFarm thank you
Idk about the DOHC, but the SOHC for this entire generation of escort (98-02) has no map. I've had to rebuild the whole friggin intake at only 125,000 miles (lol ya the same as yours). I had a leak on the lower intake gasket, throttle body gasket, a failing IAC, and a dead MAF (technically two, because the first one failed at 85,000 and the second one at 115,000). I have also found that two aftermarket Air filters do not have the proper tolerances on the part the MAF tube is supposed to insert into, resulting in air bypassing the MAF. The first time it happened sent me on a wild goose chase. But after replacing everything at 126,000 miles my LTFT rests at 2-7% for the whole range of performance again.
As an aside, if you haven't already, change the timing belt and water pump. While it failing probably won't result in engine damage, it WILL leave you stranded and they tend to go at 125-175,000 miles.
@@benruss4130 thanks for the information, it will be helpful
Mine does the same I have a 99 zx2
Please make an update video
Team Ups the valve works fine but the intake manifold gaskets needed to be changed. It had a vacuum leak causing the erratic idle. The idle would rev up at rest and even going down the road causing a drivability issue. Try a smoke test around the intake area to make sure that is or is not the problem. Thanks for watching and commenting. If you have any more questions please ask either the community or I will help the best we can. ~Mr. C.
The Idle Air Control Valve looks harder to replace on the 1999 Mercury Mystique, even though it looks like the exact same part. The bolts are facing the firewall. I believe, Ford purposely made the Mystique hard to work on.
Quagmire Warrior that is interesting. I have never worked on a Mystique. That does sound like a pain. Thanks for watching and commenting. ~Mr. C.
Cleaning the original would probably work just as well.
johnlvs2run that is good to know. I will try that next time I have a sticky one. Thanks for sharing! ~Mr. C.
Nope, not for my zx2, , and was way bigger pain to get to under intake screwing in to passenger side
Mine was replaced but it doesn't idle properly. It idles too fast and takes too long to return to baseline idle speed. I figure it's simply because it's not a Ford product and not engineered to original specs.
@mlester3001 that is interesting. It could be an intake gasket leak or throttle body gasket leak. It could be a faulty valve. Thanks for watching and commenting. ~Mr. C.
LOL at 2:33 you said IAC1087 but thats ok.
Raven Bishop good catch! ~Mr.
C.