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Old 07-30-2017, 01:19 PM
ps2cho's Avatar
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Join Date: Jun 2006
Location: Chandler, Arizona
Posts: 3,523
300TE Stalling/Acceleration stumble

Hi guys,

Need some help on my 88 300TE. There is an inconsistent acceleration issue where if I give it too much gas, the car will almost stall, or simply refuse to accelerate and stumble. Once I am doing 20mph+, no issues, no power problems, everything is smooth. Its just accelerating away from a stop light...the longer I sit at idle the worse it gets.

I just ran a fuel volume test and I exceed spec. I then moved onto fuel pressures and I found an issue - Lower chamber was 4.1 bar, upper 5.4. But then after I ran the car for a while doing other stuff, it went back to up 4.9 bar lower...I've never heard of the lower pressure ever supposed to be less than 4.9 bar.

Any ideas on whether the odd lower chamber pressures could be electrical related or anything else?

2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k
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Old 07-31-2017, 10:42 PM
lsmalley's Avatar
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Join Date: Oct 2006
Location: California
Posts: 1,979
Too much gas to almost stall seems like more air is being pulled in than gas. Possibly throttle body issue somewhere?


1990 190E 2.6L
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