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How to adjust idle 1988 cadillac brougham, it idles too high

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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alicantecoli
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SOURCE: 88' samurai idles to high

88 model its a carbureter,need a clean by the sound of it

Posted on Feb 01, 2009

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  • 1 Answer

SOURCE: 1994 Cadillac Eldorado Northstar High idle

I am not sure if this will help you but PO27 is listed as "Open Throttle Signal Switch" which could mean that your throttle position sensor needs replacing. Although with Cadillacs, it could mean anything. I hope this helps...

Posted on Feb 03, 2009

Molson02536
  • 3854 Answers

SOURCE: Idle seems a bit high. Need to know how to adjust and what RPM

There are a couple of things that come to mind. One is make sure the EGR Valve and intake manifold are not carboned up. I normally have to clean them every 60 to 80,000 miles. It will actually close up with Carbon and restrict air flow and make the EGR valve malfunction. 
Secondly, the diesel pump may just have a lot of wear and it is putting out too much fuel at idle. The only way this can be checked is by the dealer with a VW specific scan tool such as VAG-COM. With this tool, you can go in and look at the the pump timing and start injection quantity. 
I have the start injection quantity many times but you have to have the software and login to get the readings. Most dealers will not do this but would rather sell you a pump if it is off.
Remove the hose from the intake where it connects to the EGR valve and look at the inside with a flashlight. See how much carbon is accumulated. This may not solve this problem but will help with starting and performance issues if corrected.

Good luck and hope this helps. To adjust the Idle, it needs to be programed in to the ECM so i am thinking that it's a Carbon issues that is restricting the air flow which the ECM is compensating to keep the engine from stalling.

Posted on May 22, 2009

  • 173 Answers

SOURCE: high idle on 95 cadillac seville 32v Northstar 103,000 mi

trottle position sensor out of range. hold down warrmer and off button on the cluster it should display codes . write them down and post them on fixya.

Posted on Apr 11, 2010

ClefCruiser
  • 7 Answers

SOURCE: 1992 geo metro 1.0 engine

You might also check the single injector, had a friend's that the fuel pressure regulator had been messed with and was over-pressurizing the injector, that weakened the injector allowing it to flood at idle and also when cut off (the injector was leaking)

Posted on Apr 29, 2010

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2 Answers

MY 94 CADILLAC SEVILLE SLS IS IDLEING HIGH. I JUST REPLACED THE STARTER PUT IT BACK TOGETHER THE STARTER IS WORKING NOW BUT NOW MY CAR IS IDLE IS HIGH, I DON'T KNOW HOW TO LOWER THE IDLE CAN YOU HELP


I am assuming a Northstar engine. Car idle is in no way connected to the starter - you have probably disturbed something else nearby. Since the starter is close to the throttle body, check the TPS, IAC motor and for a sticking throttle linkage - they all can cause idling problems. By the way, there is no user idle adjustment - all controlled by the engine computer.

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Is there are light or gauge for temp. in a 1988 Cadillac Brougham


If you do not have a guage in the instrument cluster then it is going to be a light. The light will be red or orange and shaped like a little thermostat. When you turn the key to the on position it should iluminate briefly before starting the car. If it does not then you may have bulb out in the cluster.

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Engine starts but dies immediatly unless i keep pumping gas


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if your EGR valve is stuck open its adding "false" air into the cylinders.  (just like a vacuum leak)  the engine will raise its idle speed to prevent the engine from stalling at idle.  the EGR should not be open at idle.  

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