BeardyRocker
NAXJA Forum User
- Location
- Netherlands
Hello everyone,
This is my first thread here and I hope you are able to help me. I have a '92 XJ 4.0 manual with vacuum issues. The idle seems to be rough or looping and I've been trying to fix the problem, without the result I was hoping for. My RPM indicator says that the idle is around 1100. But also tends to misread from time to time. When applying the brake it seems to fluctuate and go up.
What I've done so far:
- TPS replaced;
- Throttle housing cleaned and new gasket installed;
- IAC replaced;
- Intake/outlet manifold gasket replaced;
- Vacuum lines replaced on intake manifold to MAP sensor, valve cover and fuelrail;
- Brake booster replaced except of the vacuumline.
As I said, so far no dice. The computer doesn't give a error. But after I replaced the gasket on the intake/outlet all seemed to be fine. But after a while the idle went up again and doesn't want to come down and stay stable.
The next thing for me to do would be to visit an expert mechanic, including all costs. So I hope you can give me some advice on how to proceed.
Thanks in advance!
This is my first thread here and I hope you are able to help me. I have a '92 XJ 4.0 manual with vacuum issues. The idle seems to be rough or looping and I've been trying to fix the problem, without the result I was hoping for. My RPM indicator says that the idle is around 1100. But also tends to misread from time to time. When applying the brake it seems to fluctuate and go up.
What I've done so far:
- TPS replaced;
- Throttle housing cleaned and new gasket installed;
- IAC replaced;
- Intake/outlet manifold gasket replaced;
- Vacuum lines replaced on intake manifold to MAP sensor, valve cover and fuelrail;
- Brake booster replaced except of the vacuumline.
As I said, so far no dice. The computer doesn't give a error. But after I replaced the gasket on the intake/outlet all seemed to be fine. But after a while the idle went up again and doesn't want to come down and stay stable.
The next thing for me to do would be to visit an expert mechanic, including all costs. So I hope you can give me some advice on how to proceed.
Thanks in advance!