Having problems with your 1998 Chevrolet C1500 ?

High idle truck surges and has a high idle

Posted / edited by AnonymousUser on : 15-01-2018

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Repair Help & Product Troubleshooting for 1998 Chevrolet C1500

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82 F150, fuel injection, 5.0 RPM's go high and idles high, happens when driving, when you stop and put in park or nuetral will die. found when we had very slight dusting of snow on the street, could not control to stop...was like a surge working against the stop. Tires have good tread and and air pressure. Have any ideals on the cause of this? When starting the truck, sometimes will idle normal and sometimes jumps into really high idle.... when weather is normal, have had surge or jump when sitt


I would first check the idle position sensor,located where the throttle cable ends at the tbi. check for broken wires or hoses, try un-plugging and see if the problem goes away. get back to me if you need more help. please rate my fix. Thanks Ray ... 1982 Ford F 150

High idle truck surges and has a high idle


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1995 Chevy silverado with a 5.7. Was running fine i stopped at a stoplight and it died. It was hard starting, i had to turn the AC off to get it to start, then had to 2 feet it home. Now it starts and idles rough, it does the surge thing when in park. When i put it in gear the truck dies, when i turn AC on the truck dies. When i try to drive it, and give it gas the truck runs rough and has no power at all once i get RPMS above 2200 the truck runs just fine. Truck runs great on the high way b


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I own a 1998 Ford F150 V8, 4.6L engine with approx. 273,000 miles. My truck has a high idle problem. Whenever I am driving for awhile and come to a stop, the engine idles well pass 1500 RPMs. In fact, the idle is so high, it requires me to keep my foot on the brakes to prevent running into the car in front of me. Once it starts idling high, it continues until I turn the truck off. Can you advise on what is causing the truck to idle at very high RPMs after being driven?


Vacuum leak or the IAC. Check the PCV hose behind the throttle body at the elbow and see if it \015\012is sucking air! Common problem on all F series with the 4.6.The first thing to look for are vacuum leaks, pcv, lines going under \015\ ... Ford F-150

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CAR IDLES AND SURGES HIGH - Crown Victoria Ford Cars & Trucks


With the info provided, You most likely have an engine vacuum leak. To start, you must inspect all vacuum hose's and connections to verify there are no cracks or disconnected ports. After this procedure is performed and a vacuum leak is totally ruled ... Ford Crown Victoria

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1989 f150 302 V8 fuel injected emissions problem. Installed new engine from Ford, blew SKY HIGH on low and high idle emissions. Emission numbers were 10-20x max legal limit (over 3000). Replaced the catalytic converter and EGR valve and cleaned the idle air valve and took back to emissions. Truck passed the HIGH IDLE test very well, but still failed the low idle test. The low idle numbers were cut exactly in half, but were still 5-10x the max allowable. QUESTION IS, what can cause JUST THE LOW I


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There are only a few things that cause high idle speeds, one is vacuum leaks, did you use propane to check for leaks? as far as the EGR goes, that would cause the engine to stall if if it was help open, and if it is in ... Chevrolet C1500

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I would check vacum lines or system for leaks ... Ford F-150

I have a 83' lincoln Mark 6 with a 302 V8 and a 2 Barrel thottlebody. My condion is When I start the engine idles high and then drops to a low idle when it warms up and then it runs rough surging high and low until I place it Drive and then it smoothes out and sometimes stalls in Drive. This surging rough ilde only happens in Park and Neutral. What is my cause and correction?


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Engine starts,reaches high rpm,then slowly returns to a rough idle, misses badly,no backfire,surges as if searching/adjusting air/ fuel/est,timing light shows mark constantly changing/erratic,engine then races to high rpm,only at that time(high rpm)does timing mark maintain correct 10 deg consistently,then returns to rough poor idle- engine cycles like this and wont maintain proper timing mark alignment until high rpm... anyone care to reply about this??? and what would be probable cause / possi


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Truck idles high, does not run rough, idle adjust screw is bottomed out still seems to idle high, does this hot and cold.


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I have a 4x4 89 s-10 4.3 v6 fuel injection. When I start my truck it idles high. After 30 to 50 seconds the idle goes back to normal. If I put in in reverse or drive when idle is high my back tires spin with my foot on the breaks. What do I do?


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2005 dodge ram 2500 diesel truck... when i put the truck in gear, (any gear) with the brakes pressed down the truck tries to take off on its own, kinda like idling high when trying to stop.. its the strangest thing!!! someone indicated it might be the torque converter engaging or not dis engaging, because it tries to take off... but why does it rev the rpm's as high as 1700 when doing this????????


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Idle trouble when i start my truck it will idle high when i drive for a few miles and have to stop at a stop sign it will idle high


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