High RPM's AND LOW SPEED WITH HIGH FUEL CONSUMPTION

2001 HOLDEN APOLLO

161 MILES • 4 CYL • FWD • AUTOMATIC

SUMIT SAHA

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5 POSTS
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I have a Holden Astra . Recently a problem showed up. My engine rpm goes way too high with low speed on road . Eats up fuel really a lot. Car starts vibrating. I have recently changed the timing belt . And I I have checked the computer codes. (no codes displayed) . 161,000 km's running petrol unleaded. Why is it happening and any solution please?

Sep 20, 2016 at 10:22 AM

MHPAUTOS

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31,937 POSTS

Re-check valve timing, check fuel pressure, and see if pressure increases with vacuum line off fuel pressure regulator, start here.

Sep 21, 2016 at 5:13 AM

SUMIT SAHA

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5 POSTS

I did not get you properly. can you please elaborate?

Sep 21, 2016 at 5:22 AM

MHPAUTOS

CERTIFIED EXPERT
31,937 POSTS

Can you check the fuel pressure, with the engine running and a fuel pressure gauge fitted, when you remove the vacuum line from the fuel pressure regulator normally fitted at the end of the fuel rail on the engine, the fuel pressure should increase.

Sep 21, 2016 at 5:25 AM

SUMIT SAHA

MEMBER
5 POSTS

Okay thank you. I have recently changed my transmission oil too. The gear does not shift to next gear . It holds the gear and rpm's go to 3 to 4.

Sep 21, 2016 at 5:55 AM

SUMIT SAHA

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5 POSTS

Can you tell how much it going cost to repair this problem? I am on tight budget .

Sep 21, 2016 at 5:57 AM

MHPAUTOS

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31,937 POSTS

just can't say until the diagnosis is done and a fault is confirmed there may be other factors as well with out hands on diagnosis with these problems there is some uncertainty

Sep 21, 2016 at 2:42 PM

SUMIT SAHA

MEMBER
5 POSTS

I have check with a scanning machine but no codes came up.

Sep 22, 2016 at 1:27 AM

MHPAUTOS

CERTIFIED EXPERT
31,937 POSTS

did you scan for transmission codes,

Sep 22, 2016 at 5:31 AM