S-10 :: 1998 Blazer - P0507 Idle Speed High / Low And P0446 Evap System
Mar 7, 2012
I have a 1998 blazer 4x4... I had a issues with the car before and I had to turn the idle screw up until I fixed my problem. I now fixed my problem and I need to know what my idle rpm should be at.
After I fixed the original problem after about a day of driving I had a P0507 Idle speed High/Low. I turned the set screw down and lowered my rpm. After about 5min of driving the code went away on its own.
About 1 week later I am now getting the P0507 again and now it has a buddy. P0446 Evap System.
Questions what would my idle rpm be? Can the high rpm cause the EVAP code as well.
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I have a 130K+ 2002 SC430 in which I recently started to smell gas in the cabin when air vents were set to pull air from outside. Within two weeks, I got the check engine light with two codes, P0440 and P0446, which mean "Evap Emission Control System Malfunction".
In doing some research the check light light could be everything from a gas cap which is not tighened properly, to a bad "charcoal canister " (whatever exactly that is), to a cracked or disconnected "Evap Hose". The only other SC430 related thread I could find on this topic is [URL] ....
If it factors in, I only use 93 octane gas. Interestingly enough, the check engine light came on within 30 seconds of me using the window washer to clean the windshield (at highway speeds), likely a coincidence.
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Car started idling all weird this evening, rising and falling when at a stop light. Car APR Stg 2+. Found the fault code above. I changed the map back to stock and cleared the code and it still does it. I let the car sit for like 30 minutes and started it up again and it sounds even worse like it wants to stall. I did a few google searches and it seems that it could be a faulty PCV or throttle body. How should I proceed? I'm thinking change the PCV and if the problem is still there it's a potentially larger issue.
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1998 saturn SL2 idle speed changes low, high, back to low. Some times the car dies, can happen any time a few times in traffic. Once the engines dies the idle stays low for 5 minutes, then the problem goes away for a while (a week). You never know when it will happen.
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08 Accord. After replacing the starter and cleaning the throttle body I keep having a CEL and the P0507 code.
Checked for leaks around intake, vacuum lines, etc. found none.
Tried the relearn procedure and still no luck. Car idea higher than normal ( just over 1000 rpms warm). Also feels like it wants to pull even when stopped.
So I figure I have either:-damaged the throttle body somehow cleaning it- Have incorrectly implemented the re learn procedure- missed a vacuum leak ( possible but doubtful)- or something else I don't know about
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I have an issue with extreme high initial idle at start up. I took my 1998 Ranger with a 3.0L to the local dealer to have some work done about a month ago. Long story short, my number six plug wire got burned against the exhaust rail.
Anyway, I guess they re-flashed the computer to the newest *.bin, or flash version. After that when I start the truck the tachometer jumps up to 2200 - 2300 RPM and then it settles down to about 1500 after a moment or two, then it finally adjusts itself to about 1100 for a few more seconds and eventually ends up at 900 - 1000 RPM.
I confronted Ford about this and they said that Ranger's and F-150's do have a tendency to do that at start up. Ordinarily I wouldn't be too concerned, however I believe that the 2200 - 2300 RPM high idle at start up at 0 F, a bit much.
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Check engine light emissions evap system code comes up when the system is scanned what could be problem? 1998 chevrolet prizm...
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i have a 1998 chevy blazer 4.3 4wd v6 about 130000 miles on it. There is no check engine light on at all. Some reason it takes long time for it to get up to speed.and i can't figer out why that is i did replace spark plugs in it..
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I have a 2002 Echo with 185K miles on it and i have a 2003 Echo with 101K miles on it, Both have P0446 P0440 P0441 codes coming up on them, the 2002 I replaced the gas cap, VSV valve and the rubber hoses from the throttlebody to the hard plastic line in the engine bay, and the 2003 I only replaced the rubber lines in the engine bay.
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What would cause my truck to have a long turnover start, a really rough idle, and a loss of power after idling at a stop light for about a minute?
This problem gets worse as the truck warms up. It feels as if I'm not getting power from all 6 cylinders but this goes away after about 20 feet of acceleration. The truck has never not started. It just has to turn over for about 5 to 10 seconds before it fires up. I changed the spark plugs and wires thinking it was that and then i tried the fuel filter and it wasn't that either.
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Today my Check Engine Light came on for the first time in years on my 1998 Ford Ranger. It has 363,000 miles on it. But the engine was changed about 150,000 miles ago. It's a 2.5 automatic. It runs good and has no problems until today. I was leaving a shop and when I started up the truck the Check Engine Light came on. It wasn't idling bad but when I went to take off it wouldn't hardly move. I wasn't even able to keep driving. So I stopped and turned it off and restarted it. Then the Check Engine Light was gone and it ran fine. I scanned it when I got home and it a Pending code of P0446.
I've never gotten this one before. It said something was wrong with the fuel vapor vent solenoid open or shorted. I've never replaced anything on the evaporative emission system except a hose under the hood 3 or 4 years ago. I've had to change the fuel pump a couple times. I've never had any wiring issues. I've never hacked into the wiring. I've owned it since it was new. Is it likely that solenoid is failing or the vapor canister is shot? I don't need this to happen again because even if it's in what was called limp mode. there's no way I could've driven it home like that. I couldn't even pull over. I was lucky I was still in a parking lot.
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My 1998 GMC Sierra K1500 has developed an intermittent high speed miss. I doesn't miss while idling but with no apparent regularity it will jerk as though the engine lost power for just a moment. I just replaced the distributor cap and rotor and the plugs and plug wires appear to be fairly new (I bought the truck last May). The truck has about 213,000 miles on it.
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Having DTC of P0507? Engine is revving a bit higher at idle than normal.
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Granddaughter showed up with her '02 Accent idle varying between 600 and 2500 rpm. Disconnected Idle Speed Control Actuator and engine runs at very high idle so apparently the ECM is unsuccessfully attempting to manage the idle and the ISC is functioning. Reading P0507 code. Checked for vacuum leaks beyond throttle body, found none.
The car was involved in a fender bender accident a couple days before the idle issue. No CEL until a couple days after the accident. The varying idle started many days after the CEL.
The wreak cut a half dozen wires in the area outside of the battery. She repaired them and I just finished redoing with solder and shrink wrap. Found no faults with her twist and tape repairs or any other damage to wiring. Varying idle still there.
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Ok, ready for a new head scratcher? After replacing the starter, the battery cables, the camshaft position sensor, several hoses that were broken and/or disconnected, a wire for the transmission "forgot the name of it, but technically it was a cable with a piece of plastic that connected to the throttle", air filter, spark plugs, spark plug wires, battery temperature sensor, ignition coil, several missing fuses, I got a new code.
This code came up and I believe it is the same code that came up before, but I think it got masked by the battery temperature sensor and the "random cylinder misfire." It only appears when I reach speeds of 60 mph or above, the code is P1899 and when I took it to Autozone, Oreilly's, and Dick Poe Dodge, they were unable to figure out what the code meant.
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I have a 98 Explorer Eddie Bauer edition with electronic climate control w/ steering wheel temp and fan controls.
Just yesterday, I was running the a/c set at 74 degrees and it was working great as usual. Then suddenly the fan went from high speed to nothing. The auto control was still on, just the fan stopped blowing. After about a minute when the inside of the vehicle heated up some, the fan kicked back in on high speed. I tried to adjust the fan speed via the steering wheel switches and found that the fan only has high and off speeds.
What should I look for that would cause the fan speeds to stop working or only work on high?
1998 V6 4.0L
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have a 98 rodeo, with a V6 & Auto trans. have an intermittent problem - as I am driving engine will occasionally drop to idle speed and then pick back up to driving speed. Engine keeps running smoothly, just at idle speed.
CEL does not come on / no codes
Replaced Throttle Position Sensor - and thought I had found the problem, but since it is so random, it just didn't happen again for 1 1/2 weeks.
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I recently had intake manifold gaskets replaced in my 98 gmc sierra 4x4 pickup 5.7 . The day I drove it home from the shop it ran fine, even day after but the next day I noticed it seem to idle a little rough and even at normal driving, sometimes seems worse than others. No service engine light has yet to come on. Could there be vacuum leak, trash in intake or bad wires and plugs. Plugs, wires, rotor button and distributor cap are only year and half old.
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1995 Tacoma with 2.7 EFI engine has high idle speed. When cranked cold idles at 800 rpm but as it warms up idle speed increases up around 1600 rpm. Does not idle down when clutch is fanned, have checked for vacuum leaks and have also checked most sensors. The exhaust manifold is cracked and I am not sure if this might be part of the problem. I am not convinced issue is not vacuum related but not sure of a definite way to resolve this question or issue.
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I bought my 3.6 in november with 2k miles on and now have 15k, in the last month or 2 I've noticed that at odd times it idles high. It normally idles at 500-600 id say and will randomly peak to 1000-1100. It wouldn't really bother me except it sounds like hell and I have to practically stand on the brakes for it not to jump forward. I've had 13k miles and 6 months of problem free driving
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1998 Explorer 4L 6Cyl 4WD 5 Speed Auto
This engine unexpectedly surges from idle up to as much as 3 or 4 thousand RPM. It can be frightening. The IAC valve was buzzing loudly so we changed it out a couple of times with wreckers parts. With the third replacement valve in there, it hasn't surged yet but we are very leery to drive it for fear of uncontrolled acceleration while in heavy traffic. Is this a known problem or recall with these vehicles. I think it is ridiculous that the design would allow such a dangerous condition!
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