Upgraded I/C Pump: Bosch 010
#29
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Join Date: Apr 2012
Location: Wichita, Ks
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2003 E55 AMG
Question for you guys. I replaced my stock pump with a CM30 about 7 months ago. For the last two days, my s/c has not been working at all, unless im at the highway, turn the ignition off and then back on, then it will engage. So I assume it must be a cooling issue. Now my question is, will a bad i/c pump cause this or a bad IAT sensor?
#30
MBWorld Fanatic!
I believe the Johnson pumps have been known to go bad at times.. Im thinking of changing mine over to the bosch unit.. Ive had mine cm30 pump installed for over 2 years and i think its starting to go.. My AITs seem to be pretty high recently, even though the s/c is still working as normal.
#31
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2003 E55 AMG
I've heard that too. But 7 months? Damn. After My last post, the s/c has been engaging and working properly. Like wtf car! Im sure something has to be bad, even this morning the temp was 36 F and it still wouldnt engage. I guess first step I'll take is chane the pump. Might as well go with the new Bosch or that Meziere one. What do you think about that one?
#36
MBWorld Fanatic!
#37
Former Vendor of MBWorld
I reduced pricing on the pump to $103.99. Also, this memorial holiday FCP is running a 10% off orders over $199 promotion. You can use the code in the banner on checkout if your order exceeds $199. Keep in mind this item includes free shipping, lifetime replacement warranty and unlimited returns. Have a safe holiday
--Kyle
--Kyle
#38
Senior Member
Has anyone looked at the Pierburg CWA50 pump? The performance data exceeds the Bosch and Johnson pumps mentioned here.