1987 Pontiac Fiero Hard shifting into drive

1987 PONTIAC FIERO
114,000 MILES
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BIGKELS
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My 1989 Pontiac fiero idles fine while in park but when I shift into drive the rpms increase and shifts hard into drive. The car shifts fine once it is in drive from 1st to 2nd or 3rd 4th. The car drives great other than that 1st gear jump. Just wondering if anybody could help me with trouble shooting this trouble. Thank you very much for any help you can offer. Thanks again.
Sep 19, 2013 at 3:53 PM
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HMAC300
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check for vacuum leaks, scan for codes and check fuel pressure with a gauge. auto parts rent gauges. what engine too
Sep 19, 2013 at 3:55 PM
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BIGKELS
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It a 4 cylinder. Thanks so much for the help.
Sep 19, 2013 at 3:57 PM
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HMAC300
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also clean the throttle plate with choke cleaner and iac hole and spray around bottom of tbi unit it may have blown a gasket.
Sep 19, 2013 at 4:00 PM
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BIGKELS
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It has been sitting for a while and may also have older fuel in it.
Sep 19, 2013 at 4:03 PM
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BIGKELS
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I will try that and get back with you. Thank you so much for you help.
Sep 19, 2013 at 4:11 PM