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Rough idle on cold starts
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Coffin88245
- Posts: 2
- Joined: Mon Dec 02, 2019 10:54 am
- Year and Model: 1988 245
- Location: Florida
Rough idle on cold starts
Just installed the Bosch 3 injectors on my 88 245 n/a.. idle and throttle response has improved tremendously. Unfortunately it now seems to have a pretty rough idle on cold starts.. after u give it a little gas and warm it for a short period of time it smoothes out and runs like a champ.. any ideas as to why this would be happening..?
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93Regina
- Posts: 2813
- Joined: Sat Jan 18, 2014 7:11 pm
- Year and Model: 93:240/940
- Location: Sunflower State
- Been thanked: 64 times
Re: Rough idle on cold starts
Mismatch of injectors installed to LH's default fuel program....so, once started, increase RPM for say twenty seconds, then back off throttle.
Once heated O2 sensor is active, LH "sees" the richness, and decreases fuel pulse duration for decreasing fuel input.
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Coffin88245
- Posts: 2
- Joined: Mon Dec 02, 2019 10:54 am
- Year and Model: 1988 245
- Location: Florida
Re: Rough idle on cold starts
Any way to fix the issue with a tune..? They are not performance injectors just stock upgraded as far as efficiency.
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