Author |
Topic: Top gear (Read 920 times) |
|
John Rose
Newbie
2.3 Ghia
 
Posts: 6
|
Intermittently for the last week, the car either refuses to select top gear, or changes immediately back into third gear if I increase and then decrease pressure on accelerator.
I've looked on the Fault Finder and the most likely possibility is: "Won't select upper gears: Refuses to engage higher gears? also speedo needle jumps or stays at 0? YES: 1. VSS sensor faulty 2. Wiring loom fault
".
However, the speedo needle does not jump. Any ideas, please?
|
|
 IP Logged |
Regards,
John
|
|
|
Octavian_P
Senior Member
 
Posts: 1126
|
 |
Re: Top gear
« Reply #1 on: May 14th, 2007, 9:19am » |
 Quote  Modify
|
Hi there, from the description of your profile i see that you are talking about a 2.3 The first thing to start with will be the cleaning of the Mass Air Flow sensor or in short MAF. The procedure is here In most of the cases this MAF is crucial for optimum gearbox changes.
|
|
IP Logged |
2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
|
|
|
John Rose
Newbie
2.3 Ghia
Posts: 6
|
|
Re: Top gear
« Reply #2 on: May 19th, 2007, 12:55pm » |
Quote Modify
|
Hi Octavian_P,
Thanks for the advice. Tried cleaning the MAF wires. I think it has improved. However, it's still not staying in overdrive for long. As soon as I depress the accelerator slightly, the revs increase by 1,000 approx. I'm wondering if it could be the accelerator assembly sticking slightly. Is that possible?
Regards,
John
|
|
IP Logged |
Regards,
John
|
|
|
Octavian_P
Senior Member
Posts: 1126
|
|
Re: Top gear
« Reply #3 on: May 19th, 2007, 2:22pm » |
Quote Modify
|
on May 19th, 2007, 12:55pm, John Rose wrote:Hi Octavian_P,
Thanks for the advice. Tried cleaning the MAF wires. |
|
Are you referring to the MAF connector ?
In this article here the third picture shows the maf internal sensors. Are they clean or they are blackened.
http://www.fordscorpio.co.uk/cleanmaf.htm
|
|
IP Logged |
2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
|
|
|
John Rose
Newbie
2.3 Ghia
Posts: 6
|
|
Re: Top gear
« Reply #4 on: May 19th, 2007, 3:00pm » |
Quote Modify
|
The MAF internal sensors as in the 3rd photo. They are now clean.
|
|
IP Logged |
Regards,
John
|
|
|
|
Home
Help
Search
Members
Login
Reply
Send Topic
Print